The Squid Software Foundation Squid HTTP Caching Proxy version prior to version 4.0.23 contains a NULL Pointer Dereference vulnerability in HTTP Response X-Forwarded-For header processing that can result in Denial of Service to all clients of the proxy. This attack appear to be exploitable via Remote HTTP server responding with an X-Forwarded-For header to certain types of HTTP request. This vulnerability appears to have been fixed in 4.0.23 and later.
{"redhatcve": [{"lastseen": "2022-07-07T11:11:11", "description": "The Squid Software Foundation Squid HTTP Caching Proxy version prior to version 4.0.23 contains a NULL Pointer Dereference vulnerability in HTTP Response X-Forwarded-For header processing that can result in Denial of Service to all clients of the proxy. This attack appear to be exploitable via Remote HTTP server responding with an X-Forwarded-For header to certain types of HTTP request. This vulnerability appears to have been fixed in 4.0.23 and later.\n#### Mitigation\n\nA workaround for this issue is to set the "log_uses_indirect_client off" configuration directive in the squid configuration file (for example /etc/squid/squid.conf). \n\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.0", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2018-01-29T15:20:19", "type": "redhatcve", "title": "CVE-2018-1000027", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": true, "obtainUserPrivilege": false}, "cvelist": ["CVE-2018-1000027"], "modified": "2022-07-07T10:10:28", "id": "RH:CVE-2018-1000027", "href": "https://access.redhat.com/security/cve/cve-2018-1000027", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "osv": [{"lastseen": "2022-08-05T05:18:08", "description": "\nSquid, a high-performance proxy caching server for web clients, has been\nfound vulnerable to denial of service attacks associated with ESI\nresponse processing and intermediate CA certificate downloading.\n\n\n* [CVE-2018-1000027](https://security-tracker.debian.org/tracker/CVE-2018-1000027)\nIncorrect pointer handling resulted in the possibility of a remote\n client delivering certain HTTP requests in conjunction with certain\n trusted server reponses involving the processing of ESI responses or\n downloading of intermediate CA certificates to trigger a denial of\n service for all clients accessing the squid service.\n\n\nFor Debian 7 Wheezy, these problems have been fixed in version\n2.7.STABLE9-4.1+deb7u3.\n\n\nWe recommend that you upgrade your squid 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": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "baseScore": 7.5, "privilegesRequired": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "userInteraction": "NONE", "version": "3.0"}, "impactScore": 3.6}, "published": "2018-02-02T00:00:00", "type": "osv", "title": "squid - security update", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": true, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2018-1000027"], "modified": "2022-08-05T05:18:06", "id": "OSV:DLA-1267-1", "href": "https://osv.dev/vulnerability/DLA-1267-1", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}, {"lastseen": "2022-08-05T05:18:09", "description": "\nSquid, a high-performance proxy caching server for web clients, has been\nfound vulnerable to denial of service attacks associated with ESI\nresponse processing and intermediate CA certificate downloading.\n\n\n* [CVE-2018-1000024](https://security-tracker.debian.org/tracker/CVE-2018-1000024)\nIncorrect pointer handling resulted in the ability of a remote\n server to return a crafted ESI response which could trigger a denial\n of service for all clients accessing the Squid service. This issue\n affects the Squid custom ESI parser.\n* [CVE-2018-1000027](https://security-tracker.debian.org/tracker/CVE-2018-1000027)\nIncorrect pointer handling resulted in the possibility of a remote\n client delivering certain HTTP requests in conjunction with certain\n trusted server reponses involving the processing of ESI responses or\n downloading of intermediate CA certificates to trigger a denial of\n service for all clients accessing the squid service.\n\n\nFor Debian 7 Wheezy, these problems have been fixed in version\n3.1.20-2.2+deb7u8.\n\n\nWe recommend that you upgrade your squid3 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": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "baseScore": 7.5, "privilegesRequired": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "userInteraction": "NONE", "version": "3.0"}, "impactScore": 3.6}, "published": "2018-02-02T00:00:00", "type": "osv", "title": "squid3 - security update", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": true, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2018-1000024", "CVE-2018-1000027"], "modified": "2022-08-05T05:18:06", "id": "OSV:DLA-1266-1", "href": "https://osv.dev/vulnerability/DLA-1266-1", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}, {"lastseen": "2022-08-10T07:13:41", "description": "\nSeveral vulnerabilities have been discovered in Squid3, a fully featured\nweb proxy cache. The Common Vulnerabilities and Exposures project\nidentifies the following issues:\n\n\n* [CVE-2018-1000024](https://security-tracker.debian.org/tracker/CVE-2018-1000024)\nLouis Dion-Marcil discovered that Squid does not properly handle\n processing of certain ESI responses. A remote server delivering\n certain ESI response syntax can take advantage of this flaw to cause\n a denial of service for all clients accessing the Squid service.\n This problem is limited to the Squid custom ESI parser.\n* [CVE-2018-1000027](https://security-tracker.debian.org/tracker/CVE-2018-1000027)\nLouis Dion-Marcil discovered that Squid is prone to a denial of\n service vulnerability when processing ESI responses or downloading\n intermediate CA certificates. A remote attacker can take advantage\n of this flaw to cause a denial of service for all clients accessing\n the Squid service.\n\n\nFor the oldstable distribution (jessie), these problems have been fixed\nin version 3.4.8-6+deb8u5.\n\n\nFor the stable distribution (stretch), these problems have been fixed in\nversion 3.5.23-5+deb9u1.\n\n\nWe recommend that you upgrade your squid3 packages.\n\n\nFor the detailed security status of squid3 please refer to \nits security tracker page at:\n[\\\nhttps://security-tracker.debian.org/tracker/squid3](https://security-tracker.debian.org/tracker/squid3)\n\n\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "baseScore": 7.5, "privilegesRequired": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "userInteraction": "NONE", "version": "3.0"}, "impactScore": 3.6}, "published": "2018-02-23T00:00:00", "type": "osv", "title": "squid3 - security update", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": true, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2018-1000024", "CVE-2018-1000027"], "modified": "2022-08-10T07:13:38", "id": "OSV:DSA-4122-1", "href": "https://osv.dev/vulnerability/DSA-4122-1", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "openvas": [{"lastseen": "2020-01-29T20:09:34", "description": "Squid, a high-performance proxy caching server for web clients, has been\nfound vulnerable to denial of service attacks associated with ESI\nresponse processing and intermediate CA certificate downloading.\n\nCVE-2018-1000027\n\nIncorrect pointer handling resulted in the possibility of a remote\nclient delivering certain HTTP requests in conjunction with certain\ntrusted server responses involving the processing of ESI responses or\ndownloading of intermediate CA certificates to trigger a denial of\nservice for all clients accessing the squid service.", "cvss3": {}, "published": "2018-02-21T00:00:00", "type": "openvas", "title": "Debian LTS: Security Advisory for squid (DLA-1267-1)", "bulletinFamily": "scanner", "cvss2": {}, "cvelist": ["CVE-2018-1000027"], "modified": "2020-01-29T00:00:00", "id": "OPENVAS:1361412562310891267", "href": "http://plugins.openvas.org/nasl.php?oid=1361412562310891267", "sourceData": "# Copyright (C) 2018 Greenbone Networks GmbH\n# Text descriptions are largely excerpted from the referenced\n# advisory, and are Copyright (C) of the respective author(s)\n#\n# SPDX-License-Identifier: GPL-2.0-or-later\n#\n# This program is free software; you can redistribute it and/or\n# modify it under the terms of the GNU General Public License\n# as published by the Free Software Foundation; either version 2\n# of the License, or (at your option) any later version.\n#\n# This program is distributed in the hope that it will be useful,\n# but WITHOUT ANY WARRANTY; without even the implied warranty of\n# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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This attack appear to be exploitable via Remote HTTP server responding with an X-Forwarded-For header to certain types of HTTP request. This vulnerability appears to have been fixed in 4.0.23 and later.", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.0", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2018-02-09T23:29:00", "type": "debiancve", "title": "CVE-2018-1000027", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": true, "obtainUserPrivilege": false}, "cvelist": ["CVE-2018-1000027"], "modified": "2018-02-09T23:29:00", "id": "DEBIANCVE:CVE-2018-1000027", "href": "https://security-tracker.debian.org/tracker/CVE-2018-1000027", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "debian": [{"lastseen": "2021-12-10T16:18:42", "description": "Package : squid\nVersion : 2.7.STABLE9-4.1+deb7u3\nCVE ID : CVE-2018-1000027\nDebian Bug : 888720\n\n\nSquid, a high-performance proxy caching server for web clients, has been\nfound vulnerable to denial of service attacks associated with ESI\nresponse processing and intermediate CA certificate downloading.\n\nCVE-2018-1000027\n\n Incorrect pointer handling resulted in the possibility of a remote\n client delivering certain HTTP requests in conjunction with certain\n trusted server reponses involving the processing of ESI responses or\n downloading of intermediate CA certificates to trigger a denial of\n service for all clients accessing the squid service.\n\nFor Debian 7 "Wheezy", these problems have been fixed in version\n2.7.STABLE9-4.1+deb7u3.\n\nWe recommend that you upgrade your squid packages.\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\nAttachment:\nsignature.asc\nDescription: PGP signature\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "baseScore": 7.5, "privilegesRequired": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "userInteraction": "NONE", "version": "3.0"}, "impactScore": 3.6}, "published": "2018-02-02T14:43:06", "type": "debian", "title": "[SECURITY] [DLA 1267-1] squid security update", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": true, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2018-1000027"], "modified": "2018-02-02T14:43:06", "id": "DEBIAN:DLA-1267-1:BBE67", "href": "https://lists.debian.org/debian-lts-announce/2018/02/msg00002.html", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}, {"lastseen": "2021-12-31T04:26:38", "description": "Package : squid3\nVersion : 3.1.20-2.2+deb7u8\nCVE ID : CVE-2018-1000024 CVE-2018-1000027\nDebian Bug : 888719 888720\n\n\nSquid, a high-performance proxy caching server for web clients, has been\nfound vulnerable to denial of service attacks associated with ESI\nresponse processing and intermediate CA certificate downloading.\n\nCVE-2018-1000024\n\n Incorrect pointer handling resulted in the ability of a remote\n server to return a crafted ESI response which could trigger a denial\n of service for all clients accessing the Squid service. This issue\n affects the Squid custom ESI parser. \n\nCVE-2018-1000027\n\n Incorrect pointer handling resulted in the possibility of a remote\n client delivering certain HTTP requests in conjunction with certain\n trusted server reponses involving the processing of ESI responses or\n downloading of intermediate CA certificates to trigger a denial of\n service for all clients accessing the squid service.\n\nFor Debian 7 "Wheezy", these problems have been fixed in version\n3.1.20-2.2+deb7u8.\n\nWe recommend that you upgrade your squid3 packages.\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\nAttachment:\nsignature.asc\nDescription: PGP signature\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "baseScore": 7.5, "privilegesRequired": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "userInteraction": "NONE", "version": "3.0"}, "impactScore": 3.6}, "published": "2018-02-02T14:42:06", "type": "debian", "title": "[SECURITY] [DLA 1266-1] squid3 security update", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": true, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2018-1000024", "CVE-2018-1000027"], "modified": "2018-02-02T14:42:06", "id": "DEBIAN:DLA-1266-1:73D47", "href": "https://lists.debian.org/debian-lts-announce/2018/02/msg00001.html", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}, {"lastseen": "2022-02-18T23:51:50", "description": "- -------------------------------------------------------------------------\nDebian Security Advisory DSA-4122-1 security@debian.org\nhttps://www.debian.org/security/ Salvatore Bonaccorso\nFebruary 23, 2018 https://www.debian.org/security/faq\n- -------------------------------------------------------------------------\n\nPackage : squid3\nCVE ID : CVE-2018-1000024 CVE-2018-1000027\nDebian Bug : 888719 888720\n\nSeveral vulnerabilities have been discovered in Squid3, a fully featured\nweb proxy cache. The Common Vulnerabilities and Exposures project\nidentifies the following issues:\n\nCVE-2018-1000024\n\n Louis Dion-Marcil discovered that Squid does not properly handle\n processing of certain ESI responses. A remote server delivering\n certain ESI response syntax can take advantage of this flaw to cause\n a denial of service for all clients accessing the Squid service.\n This problem is limited to the Squid custom ESI parser.\n\n http://www.squid-cache.org/Advisories/SQUID-2018_1.txt\n\nCVE-2018-1000027\n\n Louis Dion-Marcil discovered that Squid is prone to a denial of\n service vulnerability when processing ESI responses or downloading\n intermediate CA certificates. A remote attacker can take advantage\n of this flaw to cause a denial of service for all clients accessing\n the Squid service.\n\n http://www.squid-cache.org/Advisories/SQUID-2018_2.txt\n\nFor the oldstable distribution (jessie), these problems have been fixed\nin version 3.4.8-6+deb8u5.\n\nFor the stable distribution (stretch), these problems have been fixed in\nversion 3.5.23-5+deb9u1.\n\nWe recommend that you upgrade your squid3 packages.\n\nFor the detailed security status of squid3 please refer to its security\ntracker page at:\nhttps://security-tracker.debian.org/tracker/squid3\n\nFurther information about Debian Security Advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: https://www.debian.org/security/\n\nMailing list: debian-security-announce@lists.debian.org", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "baseScore": 7.5, "privilegesRequired": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "userInteraction": "NONE", "version": "3.0"}, "impactScore": 3.6}, "published": "2018-02-22T23:45:07", "type": "debian", "title": "[SECURITY] [DSA 4122-1] squid3 security update", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": true, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2018-1000024", "CVE-2018-1000027"], "modified": "2018-02-22T23:45:07", "id": "DEBIAN:DSA-4122-1:653E9", "href": "https://lists.debian.org/debian-security-announce/2018/msg00047.html", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}, {"lastseen": "2021-10-21T21:43:14", "description": "- -------------------------------------------------------------------------\nDebian Security Advisory DSA-4122-1 security@debian.org\nhttps://www.debian.org/security/ Salvatore Bonaccorso\nFebruary 23, 2018 https://www.debian.org/security/faq\n- -------------------------------------------------------------------------\n\nPackage : squid3\nCVE ID : CVE-2018-1000024 CVE-2018-1000027\nDebian Bug : 888719 888720\n\nSeveral vulnerabilities have been discovered in Squid3, a fully featured\nweb proxy cache. The Common Vulnerabilities and Exposures project\nidentifies the following issues:\n\nCVE-2018-1000024\n\n Louis Dion-Marcil discovered that Squid does not properly handle\n processing of certain ESI responses. A remote server delivering\n certain ESI response syntax can take advantage of this flaw to cause\n a denial of service for all clients accessing the Squid service.\n This problem is limited to the Squid custom ESI parser.\n\n http://www.squid-cache.org/Advisories/SQUID-2018_1.txt\n\nCVE-2018-1000027\n\n Louis Dion-Marcil discovered that Squid is prone to a denial of\n service vulnerability when processing ESI responses or downloading\n intermediate CA certificates. A remote attacker can take advantage\n of this flaw to cause a denial of service for all clients accessing\n the Squid service.\n\n http://www.squid-cache.org/Advisories/SQUID-2018_2.txt\n\nFor the oldstable distribution (jessie), these problems have been fixed\nin version 3.4.8-6+deb8u5.\n\nFor the stable distribution (stretch), these problems have been fixed in\nversion 3.5.23-5+deb9u1.\n\nWe recommend that you upgrade your squid3 packages.\n\nFor the detailed security status of squid3 please refer to its security\ntracker page at:\nhttps://security-tracker.debian.org/tracker/squid3\n\nFurther information about Debian Security Advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: https://www.debian.org/security/\n\nMailing list: debian-security-announce@lists.debian.org", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "baseScore": 7.5, "privilegesRequired": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "userInteraction": "NONE", "version": "3.0"}, "impactScore": 3.6}, "published": "2018-02-22T23:45:07", "type": "debian", "title": "[SECURITY] [DSA 4122-1] squid3 security update", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": true, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2018-1000024", "CVE-2018-1000027"], "modified": "2018-02-22T23:45:07", "id": "DEBIAN:DSA-4122-1:4EE00", "href": "https://lists.debian.org/debian-security-announce/2018/msg00047.html", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "fedora": [{"lastseen": "2020-12-21T08:17:54", "description": "Squid is a high-performance proxy caching server for Web clients, supporting FTP, gopher, and HTTP data objects. Unlike traditional caching software, Squid handles all requests in a single, non-blocking, I/O-driven process. Squid keeps meta data and especially hot objects cached in RAM, caches DNS lookups, supports non-blocking DNS lookups, and implements negative caching of failed requests. Squid consists of a main server program squid, a Domain Name System lookup program (dnsserver), a program for retrieving FTP data (ftpget), and some management and client tools. ", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "baseScore": 7.5, "privilegesRequired": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "userInteraction": "NONE", "version": "3.0"}, "impactScore": 3.6}, "published": "2018-02-06T15:38:05", "type": "fedora", "title": "[SECURITY] Fedora 27 Update: squid-4.0.23-2.fc27", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": true, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2018-1000024", "CVE-2018-1000027"], "modified": "2018-02-06T15:38:05", "id": "FEDORA:6F39E6015F66", "href": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/ZB6HQWK7V2VCEVH35633BALACCWNOCMP/", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "amazon": [{"lastseen": "2023-02-08T17:14:46", "description": "**Issue Overview:**\n\nThe Squid Software Foundation Squid HTTP Caching Proxy contains a NULL Pointer Dereference vulnerability in HTTP Response X-Forwarded-For header processing that can result in Denial of Service to all clients of the proxy. This attack appear to be exploitable via Remote HTTP server responding with an X-Forwarded-For header to certain types of HTTP request.(CVE-2018-1000027)\n\nThe Squid Software Foundation Squid HTTP Caching Proxy contains a Incorrect Pointer Handling vulnerability in ESI Response Processing that can result in Denial of Service for all clients using the proxy.. This attack appear to be exploitable via Remote server delivers an HTTP response payload containing valid but unusual ESI syntax.(CVE-2018-1000024)\n\n \n**Affected Packages:** \n\n\nsquid\n\n \n**Issue Correction:** \nRun _yum update squid_ to update your system. \n\n\n \n\n\n**New Packages:**\n \n \n i686: \n \u00a0\u00a0\u00a0 squid-3.5.20-11.35.amzn1.i686 \n \u00a0\u00a0\u00a0 squid-migration-script-3.5.20-11.35.amzn1.i686 \n \u00a0\u00a0\u00a0 squid-debuginfo-3.5.20-11.35.amzn1.i686 \n \n src: \n \u00a0\u00a0\u00a0 squid-3.5.20-11.35.amzn1.src \n \n x86_64: \n \u00a0\u00a0\u00a0 squid-debuginfo-3.5.20-11.35.amzn1.x86_64 \n \u00a0\u00a0\u00a0 squid-3.5.20-11.35.amzn1.x86_64 \n \u00a0\u00a0\u00a0 squid-migration-script-3.5.20-11.35.amzn1.x86_64 \n \n \n\n### Additional References\n\nRed Hat: [CVE-2018-1000024](<https://access.redhat.com/security/cve/CVE-2018-1000024>), [CVE-2018-1000027](<https://access.redhat.com/security/cve/CVE-2018-1000027>)\n\nMitre: [CVE-2018-1000024](<https://vulners.com/cve/CVE-2018-1000024>), [CVE-2018-1000027](<https://vulners.com/cve/CVE-2018-1000027>)\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.0", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2018-09-19T17:10:00", "type": "amazon", "title": "Medium: squid", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": true, "obtainUserPrivilege": false}, "cvelist": ["CVE-2018-1000024", "CVE-2018-1000027"], "modified": "2018-09-19T23:33:00", "id": "ALAS-2018-1081", "href": "https://alas.aws.amazon.com/ALAS-2018-1081.html", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "freebsd": [{"lastseen": "2022-01-19T15:51:31", "description": "\n\nLouis Dion-Marcil reports:\n\nDue to incorrect pointer handling Squid is vulnerable to denial\n\t of service attack when processing ESI responses.\nThis problem allows a remote server delivering certain ESI\n\t response syntax to trigger a denial of service for all clients\n\t accessing the Squid service.\nDue to unrelated changes Squid-3.5 has become vulnerable to some\n\t regular ESI server responses also triggering this issue.\nThis problem is limited to the Squid custom ESI parser.\n\t Squid built to use libxml2 or libexpat XML parsers do not have\n\t this problem.\n\n\nDue to incorrect pointer handling Squid is vulnerable to denial\n\t of service attack when processing ESI responses or downloading\n\t intermediate CA certificates.\nThis problem allows a remote client delivering certain HTTP\n\t requests in conjunction with certain trusted server responses to\n\t trigger a denial of service for all clients accessing the Squid\n\t service.\n\n\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "baseScore": 7.5, "privilegesRequired": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "userInteraction": "NONE", "version": "3.0"}, "impactScore": 3.6}, "published": "2017-12-13T00:00:00", "type": "freebsd", "title": "squid -- Vulnerable to Denial of Service attack", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": true, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2018-1000024", "CVE-2018-1000027"], "modified": "2017-12-13T00:00:00", "id": "D5B6D151-1887-11E8-94F7-9C5C8E75236A", "href": "https://vuxml.freebsd.org/freebsd/d5b6d151-1887-11e8-94f7-9c5c8e75236a.html", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "checkpoint_advisories": [{"lastseen": "2022-10-26T14:52:24", "description": "A denial of service vulnerability exists in Squid Proxy. Successful exploitation of this vulnerability would allow remote attackers to cause denial of service on the affected system.", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.0", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2018-05-27T00:00:00", "type": "checkpoint_advisories", "title": "Squid Proxy Denial of Service (CVE-2018-1172; CVE-2018-1000027)", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": true, "obtainUserPrivilege": false}, "cvelist": ["CVE-2018-1000027", "CVE-2018-1172"], "modified": "2022-10-26T00:00:00", "id": "CPAI-2018-0513", "href": "", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "ubuntu": [{"lastseen": "2023-01-26T12:55:14", "description": "## Releases\n\n * Ubuntu 12.04 \n\n## Packages\n\n * squid3 \\- Web proxy cache server\n\nUSN-4059-1 and USN-3557-1 fixed several vulnerabilities in Squid. This update provides \nthe corresponding update for Ubuntu 12.04 ESM.\n\nOriginal advisory details:\n\nLouis Dion-Marcil discovered that Squid incorrectly handled certain \nEdge Side Includes (ESI) responses. A malicious remote server could \npossibly cause Squid to crash, resulting in a denial of service. \n(CVE-2018-1000024)\n\nLouis Dion-Marcil discovered that Squid incorrectly handled certain \nEdge Side Includes (ESI) responses. A malicious remote server could \npossibly cause Squid to crash, resulting in a denial of service. \n(CVE-2018-1000027)\n\nIt was discovered that Squid incorrectly handled the cachemgr.cgi web \nmodule. A remote attacker could possibly use this issue to conduct \ncross-site scripting (XSS) attacks. (CVE-2019-13345)\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.0", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2019-07-17T00:00:00", "type": "ubuntu", "title": "Squid vulnerabilities", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": true, "obtainUserPrivilege": false}, "cvelist": ["CVE-2018-1000024", "CVE-2018-1000027", "CVE-2019-13345"], "modified": "2019-07-17T00:00:00", "id": "USN-4059-2", "href": "https://ubuntu.com/security/notices/USN-4059-2", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}, {"lastseen": "2023-01-26T13:11:00", "description": "## Releases\n\n * Ubuntu 17.10 \n * Ubuntu 16.04 ESM\n * Ubuntu 14.04 ESM\n\n## Packages\n\n * squid3 \\- Web proxy cache server\n\nMathias Fischer discovered that Squid incorrectly handled certain long \nstrings in headers. A malicious remote server could possibly cause Squid to \ncrash, resulting in a denial of service. This issue was only addressed in \nUbuntu 16.04 LTS. (CVE-2016-2569)\n\nWilliam Lima discovered that Squid incorrectly handled XML parsing when \nprocessing Edge Side Includes (ESI). A malicious remote server could \npossibly cause Squid to crash, resulting in a denial of service. This issue \nwas only addressed in Ubuntu 16.04 LTS. (CVE-2016-2570)\n\nAlex Rousskov discovered that Squid incorrectly handled response-parsing \nfailures. A malicious remote server could possibly cause Squid to crash, \nresulting in a denial of service. This issue only applied to Ubuntu 16.04 \nLTS. (CVE-2016-2571)\n\nSantiago Ruano Rinc\u00f3n discovered that Squid incorrectly handled certain \nVary headers. A remote attacker could possibly use this issue to cause \nSquid to crash, resulting in a denial of service. This issue was only \naddressed in Ubuntu 16.04 LTS. (CVE-2016-3948)\n\nLouis Dion-Marcil discovered that Squid incorrectly handled certain Edge \nSide Includes (ESI) responses. A malicious remote server could possibly \ncause Squid to crash, resulting in a denial of service. (CVE-2018-1000024)\n\nLouis Dion-Marcil discovered that Squid incorrectly handled certain Edge \nSide Includes (ESI) responses. A malicious remote server could possibly \ncause Squid to crash, resulting in a denial of service. (CVE-2018-1000027)\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.0", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2018-02-05T00:00:00", "type": "ubuntu", "title": "Squid vulnerabilities", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2016-2569", "CVE-2016-2570", "CVE-2016-2571", "CVE-2016-3948", "CVE-2018-1000024", "CVE-2018-1000027"], "modified": "2018-02-05T00:00:00", "id": "USN-3557-1", "href": "https://ubuntu.com/security/notices/USN-3557-1", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}, {"lastseen": "2023-01-26T15:05:04", "description": "## Releases\n\n * Ubuntu 16.04 ESM\n\n## Packages\n\n * squid3 \\- Web proxy cache server\n\nUSN-3557-1 fixed vulnerabilities in Squid. This update introduced a regression \nwhich could cause the cache log to be filled with many Vary loop messages. This \nupdate fixes the problem.\n\nWe apologize for the inconvenience.\n\nOriginal advisory details:\n\nMathias Fischer discovered that Squid incorrectly handled certain long \nstrings in headers. A malicious remote server could possibly cause Squid to \ncrash, resulting in a denial of service. This issue was only addressed in \nUbuntu 16.04 LTS. (CVE-2016-2569)\n\nWilliam Lima discovered that Squid incorrectly handled XML parsing when \nprocessing Edge Side Includes (ESI). A malicious remote server could \npossibly cause Squid to crash, resulting in a denial of service. This issue \nwas only addressed in Ubuntu 16.04 LTS. (CVE-2016-2570)\n\nAlex Rousskov discovered that Squid incorrectly handled response-parsing \nfailures. A malicious remote server could possibly cause Squid to crash, \nresulting in a denial of service. This issue only applied to Ubuntu 16.04 \nLTS. (CVE-2016-2571)\n\nSantiago Ruano Rinc\u00f3n discovered that Squid incorrectly handled certain \nVary headers. A remote attacker could possibly use this issue to cause \nSquid to crash, resulting in a denial of service. This issue was only \naddressed in Ubuntu 16.04 LTS. (CVE-2016-3948)\n\nLouis Dion-Marcil discovered that Squid incorrectly handled certain Edge \nSide Includes (ESI) responses. A malicious remote server could possibly \ncause Squid to crash, resulting in a denial of service. (CVE-2018-1000024)\n\nLouis Dion-Marcil discovered that Squid incorrectly handled certain Edge \nSide Includes (ESI) responses. A malicious remote server could possibly \ncause Squid to crash, resulting in a denial of service. (CVE-2018-1000027)\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.0", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2022-12-12T00:00:00", "type": "ubuntu", "title": "Squid regression", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2016-2569", "CVE-2016-2570", "CVE-2016-2571", "CVE-2016-3948", "CVE-2018-1000024", "CVE-2018-1000027"], "modified": "2022-12-12T00:00:00", "id": "USN-5771-1", "href": "https://ubuntu.com/security/notices/USN-5771-1", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "centos": [{"lastseen": "2023-01-01T05:08:10", "description": "**CentOS Errata and Security Advisory** CESA-2020:1068\n\n\nSquid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.\n\nSecurity Fix(es):\n\n* squid: Incorrect pointer handling when processing ESI Responses can lead to denial of service (CVE-2018-1000024)\n\n* squid: Incorrect pointer handling in HTTP processing and certificate download can lead to denial of service (CVE-2018-1000027)\n\n* squid: XSS via user_name or auth parameter in cachemgr.cgi (CVE-2019-13345)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Red Hat Enterprise Linux 7.8 Release Notes linked from the References section.\n\n**Merged security bulletin from advisories:**\nhttps://lists.centos.org/pipermail/centos-cr-announce/2020-April/025991.html\n\n**Affected packages:**\nsquid\nsquid-migration-script\nsquid-sysvinit\n\n**Upstream details at:**\nhttps://access.redhat.com/errata/RHSA-2020:1068", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.0", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2020-04-08T19:21:41", "type": "centos", "title": "squid security update", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": true, "obtainUserPrivilege": false}, "cvelist": ["CVE-2018-1000024", "CVE-2018-1000027", "CVE-2019-13345"], "modified": "2020-04-08T19:21:41", "id": "CESA-2020:1068", "href": "https://lists.centos.org/pipermail/centos-cr-announce/2020-April/025991.html", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "oraclelinux": [{"lastseen": "2021-07-28T14:24:35", "description": "[7:3.5.20-15]\n- Resolves: #1690551 - Squid cache_peer DNS lookup failed when not all lower\n case\n- Resolves: #1680022 - squid cant display download/upload packet size for HTTPS\n sites\n- Resolves: #1717430 - Excessive memory usage when running out of descriptors\n- Resolves: #1676420 - Cache siblings return wrongly cached gateway timeouts\n- Resolves: #1729435 - CVE-2019-13345 squid: XSS via user_name or auth parameter\n in cachemgr.cgi\n- Resolves: #1582301 - CVE-2018-1000024 CVE-2018-1000027 squid: various flaws\n[7:3.5.20-13]\n- Resolves: #1620546 - migration of upstream squid", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "baseScore": 7.5, "privilegesRequired": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "userInteraction": "NONE", "version": "3.0"}, "impactScore": 3.6}, "published": "2020-04-06T00:00:00", "type": "oraclelinux", "title": "squid security and bug fix update", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": true, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2018-1000024", "CVE-2018-1000027", "CVE-2019-13345"], "modified": "2020-04-06T00:00:00", "id": "ELSA-2020-1068", "href": "http://linux.oracle.com/errata/ELSA-2020-1068.html", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "redhat": [{"lastseen": "2021-10-19T20:36:40", "description": "Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.\n\nSecurity Fix(es):\n\n* squid: Incorrect pointer handling when processing ESI Responses can lead to denial of service (CVE-2018-1000024)\n\n* squid: Incorrect pointer handling in HTTP processing and certificate download can lead to denial of service (CVE-2018-1000027)\n\n* squid: XSS via user_name or auth parameter in cachemgr.cgi (CVE-2019-13345)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Red Hat Enterprise Linux 7.8 Release Notes linked from the References section.", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "baseScore": 7.5, "privilegesRequired": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "userInteraction": "NONE", "version": "3.0"}, "impactScore": 3.6}, "published": "2020-03-31T09:14:49", "type": "redhat", "title": "(RHSA-2020:1068) Moderate: squid security and bug fix update", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": true, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2018-1000024", "CVE-2018-1000027", "CVE-2019-13345"], "modified": "2020-11-18T19:54:26", "id": "RHSA-2020:1068", "href": "https://access.redhat.com/errata/RHSA-2020:1068", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}]}
CVE-2018-1000027
