Advisory ROSA-SA-2021-1976

2021-07-02T18:10:45

Description

Software: squid 3.5.20 OS: Cobalt 7.9 CVE-ID: CVE-2016-10003 CVE-Crit: HIGH CVE-DESC: An incorrect comparison of HTTP request headers in Squid HTTP Proxy 3.5.0.0.1-3.5.22 and 4.0.1-4.0.16 causes Collapsed Forwarding to incorrectly identify some private responses as suitable for delivery to multiple clients. CVE-STATUS: Default CVE-REV: default CVE-ID: CVE-2018-19131 CVE-Crit: MEDIUM CVE-DESC: Squid before 4.4 has XSS via a crafted X.509 certificate during HTTP error page (S) generation for certificate errors. CVE-STATUS: Default CVE-REV: Default CVE-ID: CVE-2018-19132 CVE-Crit: MEDIUM CVE-DESC: Squid before 4.4, when SNMP is enabled, allows denial of service (memory leak) via SNMP packet. CVE-STATUS: Default CVE-REV: Default CVE-ID: CVE-2019-12526 CVE-Crit: CRITICAL CVE-DESC: An issue was discovered in Squid prior to version 4.9. The processing of URN responses in Squid suffers from a heap-based buffer overflow. When receiving data from a remote server in response to a URN request, Squid cannot ensure that the response fits in the buffer. This results in a heap-based data overflow controlled by an attacker. CVE-STATUS: default CVE-REV: default CVE-ID: CVE-2019-12528 CVE-Crit: HIGH CVE-DESC: An issue was discovered in Squid prior to 4.10. This allows an engineered FTP server to initiate the disclosure of sensitive information from dynamic memory, such as information related to other users' sessions or non-Squid processes. CVE-STATUS: Default CVE-REV: default CVE-ID: CVE-2019-12529 CVE-Crit: MEDIUM CVE-DESC: The issue was found in Squid 2.x - 2.7.STABLE9, 3.x - 3.5.28, and 4.x - 4.7. When Squid is configured to use basic authentication, the Proxy-Authorization header is parsed by uudecode. uudecode determines how many bytes will be decoded by iterating over the input and checking its table. The length is then used to start decoding the string. There are no checks to make sure that the calculated length does not exceed the input buffer size. This results in decoding and contiguous memory. An attacker cannot get the decoded data unless the Squid maintainer has configured the display of usernames on error pages. CVE-STATUS: default CVE-REV: default CVE-ID: CVE-2019-12523 CVE-Crit: CRITICAL CVE-DESC: An issue was discovered in Squid before version 4.9. When processing a URN request, the corresponding HTTP request is executed. This HTTP request does not pass the access checks that incoming HTTP requests pass. This has the effect of bypassing all access checks and allowing access to restricted HTTP servers, e.g. an attacker can connect to HTTP servers that only listen to localhost. CVE-STATUS: Default CVE-REV: Default CVE-ID: CVE-2019-12524 CVE-Crit: CRITICAL CVE-DESC: An issue was discovered in Squid prior to version 4.7. When processing requests from users, Squid checks its rules to see if the request should be denied. Squid by default comes with rules to block access to the Cache Manager, which provides detailed server information intended for maintenance personnel. This rule is implemented via url_regex. The url_regex rule URL handler decodes the incoming request. This allows an attacker to encode their URL to bypass the url_regex check and access the blocked resource. CVE-STATUS: Default CVE-REV: Default CVE-ID: CVE-2019-12521 CVE-Crit: MEDIUM CVE-DESC: An issue was discovered in Squid before version 4.7. When Squid analyzes ESI, it stores ESI items in ESIContext. ESIContext contains a buffer to store a stack of ESIElements. When a new ESIElement is analyzed, it is added via addStackElement. The addStackElement has a check for the number of elements in this buffer, but it is disabled at 1, which results in a heap overflow of 1 element. The overflow is in the same structure, so it cannot affect neighboring memory blocks and thus just causes a failure during processing. CVE-STATUS: default CVE-REV: default CVE-ID: CVE-2019-12520 CVE-Crit: HIGH CVE-DESC: The issue was discovered in Squid through 4.7 and 5. When Squid receives a request, it checks its cache to see if it can handle the response. It does this by creating an MD5 hash of the absolute URL of the request. If it is found, it serves the request. The absolute URL may include decoded UserInfo (username and password) for certain protocols. This decoded information is appended to the domain. This allows an attacker to specify a username with special characters to separate the domain and treat the rest of the URL as a path or query string. An attacker can first make a request to their domain using the encoded username, and then when a request comes in for the target domain that is decoded with the exact URL, it will serve the attacker HTML instead of the actual HTML. On Squid servers that also act as reverse proxies, this allows the attacker to access features that only reverse proxies can use, such as ESI. CVE-STATUS: Default CVE-REV: Default CVE-ID: CVE-2019-12522 CVE-Crit: MEDIUM CVE-DESC: An issue was discovered in Squid before version 4.7. When Squid is started as root, it spawns its child processes as a smaller user, the default user is nobody. This is done by calling leave_suid. leave_suid leaves the saved UID set to 0. This makes it trivial for an attacker who has compromised a child process to elevate its privileges to root. CVE-STATUS: default CVE-REV: default CVE-ID: CVE-2019-18677 CVE-Crit: MEDIUM CVE-DESC: An issue was found in Squid 3.x and 4.x through 4.8 when using the append_domain parameter (because the appended characters do not interact properly with hostname length restrictions). Due to improper handling of the message, it can incorrectly redirect traffic to sources it should not be delivered to. CVE-STATUS: default CVE-REV: default CVE-ID: CVE-2019-18678 CVE-Crit: MEDIUM CVE-DESC: An issue has been discovered in Squid 3.x and 4.x through 4.8. This allows attackers to pass HTTP requests through the interface software to a Squid instance that shares the HTTP request pipeline differently. The resulting Response messages corrupt caches (between the client and Squid) with content controlled by the attacker to arbitrary URLs. The software consequences are isolated between the attacker and Squid. It does not affect Squid itself or any upstream servers. The problem is due to the request header containing spaces between the header name and the colon. CVE-STATUS: default CVE-REV: default CVE-ID: CVE-2019-18679 CVE-Crit: HIGH CVE-DESC: The issue was discovered in Squid 2.x, 3.x and 4.x through 4.8. Due to improper data management, it is vulnerable to information disclosure when processing HTTP digest authentication. Nonce markers contain the raw byte value of a pointer located in allocated heap memory. This information reduces ASLR defenses and can help attackers isolate memory regions for remote code execution attacks. CVE-STATUS: Default CVE-REV: Default CVE-ID: CVE-2019-18860 CVE-Crit: MEDIUM CVE-DESC: Squid before 4.9, when certain web browsers are used, does not properly handle HTML in the host parameter (also known as hostname) in cachemgr.cgi. CVE-STATUS: default CVE-REV: default CVE-ID: CVE-2019-18676 CVE-Crit: HIGH CVE-DESC: An issue has been found in Squid 3.x and 4.x through 4.8. Improper input validation causes a heap-based buffer overflow, which can cause a denial of service for all clients using the proxy. The severity is high because this vulnerability occurs before normal security checks; any remote client that can contact the proxy port can easily perform an attack through the generated URI scheme. CVE-STATUS: default CVE-REV: default CVE-ID: CVE-2020-15811 CVE-Crit: MEDIUM CVE-DESC: The issue was found in Squid before 4.13 and 5.x before 5.0.4. Due to incorrect data validation, HTTP request separation attacks can be successful for HTTP and HTTPS traffic. This results in cache poisoning. This allows any client, including browser scripts, to bypass local security and poison the browser cache and any subsequent caches with content from an arbitrary source. Squid uses string search instead of analyzing the Transfer-Encoding header to find fragmented encoding. This allows an attacker to hide a second request within Transfer-Encoding: it is interpreted by Squid as fragmented and split into a second request delivered in the upstream direction. Squid will then send two different responses to the client, corrupting all downstream caches. CVE-STATUS: default CVE-REV: default CVE-ID: CVE-2020-15810 CVE-Crit: MEDIUM CVE-DESC: The issue was found in Squid before 4.13 and 5.x before 5.0.4. Due to improper data validation, HTTP request smuggling attacks can be successful against HTTP and HTTPS traffic. This results in cache poisoning. This allows any client, including browser scripts, to bypass local security and poison the proxy cache and any subsequent caches with content from an arbitrary source. When configured for simplified header parsing (the default), Squid retransmits headers containing whitespace characters to upstream servers. When this occurs as a prefix to a Content-Length header, the specified frame length will be ignored by Squid (allowing the conflicting length from another Content-Length header to be used) but retransmitted upstream. CVE-STATUS: default CVE-REV: default CVE-ID: CVE-2020-14058 CVE-Crit: HIGH CVE-DESC: The issue was discovered in Squid before 4.12 and 5.x before 5.0.3. Due to the use of a potentially dangerous feature, Squid and the default certificate validation helper are vulnerable to denial of service when opening a TLS connection to an attacker-controlled server for HTTPS. This is because unrecognized error values are mapped to NULL, but later code expects each error value to map to a valid error string. CVE-STATUS: default CVE-REV: default CVE-ID: CVE-2020-15049 CVE-Crit: HIGH CVE-DESC: An issue was found in http / ContentLengthInterpreter.cc in Squid before 4.12 and 5.x before 5.0.3. Request Smuggling and Poisoning attack can be successful against an HTTP cache. The client sends an HTTP request with a Content-Length header containing "+ \"-"or an unusual shell space character prefix to the length field value. CVE-STATUS: Default CVE-REV: default CVE-ID: CVE-2020-24606 CVE-Crit: HIGH CVE-DESC: Squid before 4.13 and 5.x before 5.0.4 allows a trusted partner to perform a denial of service using all available CPU cycles while processing a generated Cache Digest response message. This only occurs when cache_peer is used with the cache digests function. The problem exists because the livelocking peerDigestHandleReply () in peer_digest.cc does not handle EOF correctly. CVE-STATUS: default CVE-REV: default CVE-ID: CVE-2020-25097 CVE-Crit: HIGH CVE-DESC: An issue was found in Squid prior to versions 4.13 and 5.x through 5.0.4. Due to improper input validation, it allows a trusted client to smuggle HTTP requests and access services that are otherwise denied by security controls. This occurs for certain uri_whitespace configuration settings. CVE-STATUS: default CVE-REV: default CVE-ID: CVE-2020-8517 CVE-Crit: HIGH CVE-DESC: An issue was discovered in Squid before 4.10. Due to improper input validation, the NTLM authentication credential parser in ext_lm_group_acl can write to memory outside of the credential buffer. On systems with memory access protection, this can cause an auxiliary process to terminate unexpectedly. This results in Squid process termination and denial of service for all clients using the proxy. CVE-STATUS: default CVE-REV: default CVE-ID: CVE-2020-8450 CVE-Crit: HIGH CVE-DESC: An issue was discovered in Squid before 4.10. Due to improper buffer management, a remote client can cause a buffer overflow in a Squid instance acting as a reverse proxy. CVE-STATUS: default CVE-REV: default CVE-ID: CVE-2020-8449 CVE-Crit: HIGH CVE-DESC: An issue was discovered in Squid before 4.10. Due to improper input validation, it can interpret generated HTTP requests in unexpected ways to access server resources denied by earlier security filters. CVE-STATUS: default CVE-REV: default CVE-ID: CVE-2021-28116 CVE-Crit: MEDIUM CVE-DESC: Squid prior to versions 4.14 and 5.x through 5.0.5 in some configurations allows information disclosure due to WCCP protocol data being read out of bounds. This can be used as part of a chain to remotely execute code like nobody. CVE-STATUS: default CVE-REV: default

{"id": "ROSA-SA-2021-1976", "vendorId": null, "type": "rosalinux", "bulletinFamily": "unix", "title": "Advisory ROSA-SA-2021-1976", "description": "Software: squid 3.5.20\nOS: Cobalt 7.9\n \nCVE-ID: CVE-2016-10003\nCVE-Crit: HIGH\nCVE-DESC: An incorrect comparison of HTTP request headers in Squid HTTP Proxy 3.5.0.0.1-3.5.22 and 4.0.1-4.0.16 causes Collapsed Forwarding to incorrectly identify some private responses as suitable for delivery to multiple clients. \nCVE-STATUS: Default\nCVE-REV: default\n \n \nCVE-ID: CVE-2018-19131\nCVE-Crit: MEDIUM\nCVE-DESC: Squid before 4.4 has XSS via a crafted X.509 certificate during HTTP error page (S) generation for certificate errors. \nCVE-STATUS: Default\nCVE-REV: Default\n \n \nCVE-ID: CVE-2018-19132\nCVE-Crit: MEDIUM\nCVE-DESC: Squid before 4.4, when SNMP is enabled, allows denial of service (memory leak) via SNMP packet. \nCVE-STATUS: Default\nCVE-REV: Default\n \n \nCVE-ID: CVE-2019-12526\nCVE-Crit: CRITICAL\nCVE-DESC: An issue was discovered in Squid prior to version 4.9. The processing of URN responses in Squid suffers from a heap-based buffer overflow. When receiving data from a remote server in response to a URN request, Squid cannot ensure that the response fits in the buffer. This results in a heap-based data overflow controlled by an attacker. \nCVE-STATUS: default\nCVE-REV: default\n \n \nCVE-ID: CVE-2019-12528\nCVE-Crit: HIGH\nCVE-DESC: An issue was discovered in Squid prior to 4.10. This allows an engineered FTP server to initiate the disclosure of sensitive information from dynamic memory, such as information related to other users' sessions or non-Squid processes. \nCVE-STATUS: Default\nCVE-REV: default\n \n \nCVE-ID: CVE-2019-12529\nCVE-Crit: MEDIUM\nCVE-DESC: The issue was found in Squid 2.x - 2.7.STABLE9, 3.x - 3.5.28, and 4.x - 4.7. When Squid is configured to use basic authentication, the Proxy-Authorization header is parsed by uudecode. uudecode determines how many bytes will be decoded by iterating over the input and checking its table. The length is then used to start decoding the string. There are no checks to make sure that the calculated length does not exceed the input buffer size. This results in decoding and contiguous memory. An attacker cannot get the decoded data unless the Squid maintainer has configured the display of usernames on error pages. \nCVE-STATUS: default\nCVE-REV: default\n \n \nCVE-ID: CVE-2019-12523\nCVE-Crit: CRITICAL\nCVE-DESC: An issue was discovered in Squid before version 4.9. When processing a URN request, the corresponding HTTP request is executed. This HTTP request does not pass the access checks that incoming HTTP requests pass. This has the effect of bypassing all access checks and allowing access to restricted HTTP servers, e.g. an attacker can connect to HTTP servers that only listen to localhost. \nCVE-STATUS: Default\nCVE-REV: Default\n \n \nCVE-ID: CVE-2019-12524\nCVE-Crit: CRITICAL\nCVE-DESC: An issue was discovered in Squid prior to version 4.7. When processing requests from users, Squid checks its rules to see if the request should be denied. Squid by default comes with rules to block access to the Cache Manager, which provides detailed server information intended for maintenance personnel. This rule is implemented via url_regex. The url_regex rule URL handler decodes the incoming request. This allows an attacker to encode their URL to bypass the url_regex check and access the blocked resource. \nCVE-STATUS: Default\nCVE-REV: Default\n \n \nCVE-ID: CVE-2019-12521\nCVE-Crit: MEDIUM\nCVE-DESC: An issue was discovered in Squid before version 4.7. When Squid analyzes ESI, it stores ESI items in ESIContext. ESIContext contains a buffer to store a stack of ESIElements. When a new ESIElement is analyzed, it is added via addStackElement. The addStackElement has a check for the number of elements in this buffer, but it is disabled at 1, which results in a heap overflow of 1 element. The overflow is in the same structure, so it cannot affect neighboring memory blocks and thus just causes a failure during processing. \nCVE-STATUS: default\nCVE-REV: default\n \n \nCVE-ID: CVE-2019-12520\nCVE-Crit: HIGH\nCVE-DESC: The issue was discovered in Squid through 4.7 and 5. When Squid receives a request, it checks its cache to see if it can handle the response. It does this by creating an MD5 hash of the absolute URL of the request. If it is found, it serves the request. The absolute URL may include decoded UserInfo (username and password) for certain protocols. This decoded information is appended to the domain. This allows an attacker to specify a username with special characters to separate the domain and treat the rest of the URL as a path or query string. An attacker can first make a request to their domain using the encoded username, and then when a request comes in for the target domain that is decoded with the exact URL, it will serve the attacker HTML instead of the actual HTML. On Squid servers that also act as reverse proxies, this allows the attacker to access features that only reverse proxies can use, such as ESI. \nCVE-STATUS: Default\nCVE-REV: Default\n \n \nCVE-ID: CVE-2019-12522\nCVE-Crit: MEDIUM\nCVE-DESC: An issue was discovered in Squid before version 4.7. When Squid is started as root, it spawns its child processes as a smaller user, the default user is nobody. This is done by calling leave_suid. leave_suid leaves the saved UID set to 0. This makes it trivial for an attacker who has compromised a child process to elevate its privileges to root. \nCVE-STATUS: default\nCVE-REV: default\n \n \nCVE-ID: CVE-2019-18677\nCVE-Crit: MEDIUM\nCVE-DESC: An issue was found in Squid 3.x and 4.x through 4.8 when using the append_domain parameter (because the appended characters do not interact properly with hostname length restrictions). Due to improper handling of the message, it can incorrectly redirect traffic to sources it should not be delivered to. \nCVE-STATUS: default\nCVE-REV: default\n \n \nCVE-ID: CVE-2019-18678\nCVE-Crit: MEDIUM\nCVE-DESC: An issue has been discovered in Squid 3.x and 4.x through 4.8. This allows attackers to pass HTTP requests through the interface software to a Squid instance that shares the HTTP request pipeline differently. The resulting Response messages corrupt caches (between the client and Squid) with content controlled by the attacker to arbitrary URLs. The software consequences are isolated between the attacker and Squid. It does not affect Squid itself or any upstream servers. The problem is due to the request header containing spaces between the header name and the colon. \nCVE-STATUS: default\nCVE-REV: default\n \n \nCVE-ID: CVE-2019-18679\nCVE-Crit: HIGH\nCVE-DESC: The issue was discovered in Squid 2.x, 3.x and 4.x through 4.8. Due to improper data management, it is vulnerable to information disclosure when processing HTTP digest authentication. Nonce markers contain the raw byte value of a pointer located in allocated heap memory. This information reduces ASLR defenses and can help attackers isolate memory regions for remote code execution attacks. \nCVE-STATUS: Default\nCVE-REV: Default\n \n \nCVE-ID: CVE-2019-18860\nCVE-Crit: MEDIUM\nCVE-DESC: Squid before 4.9, when certain web browsers are used, does not properly handle HTML in the host parameter (also known as hostname) in cachemgr.cgi. \nCVE-STATUS: default\nCVE-REV: default\n \n \nCVE-ID: CVE-2019-18676\nCVE-Crit: HIGH\nCVE-DESC: An issue has been found in Squid 3.x and 4.x through 4.8. Improper input validation causes a heap-based buffer overflow, which can cause a denial of service for all clients using the proxy. The severity is high because this vulnerability occurs before normal security checks; any remote client that can contact the proxy port can easily perform an attack through the generated URI scheme. \nCVE-STATUS: default\nCVE-REV: default\n \n \nCVE-ID: CVE-2020-15811\nCVE-Crit: MEDIUM\nCVE-DESC: The issue was found in Squid before 4.13 and 5.x before 5.0.4. Due to incorrect data validation, HTTP request separation attacks can be successful for HTTP and HTTPS traffic. This results in cache poisoning. This allows any client, including browser scripts, to bypass local security and poison the browser cache and any subsequent caches with content from an arbitrary source. Squid uses string search instead of analyzing the Transfer-Encoding header to find fragmented encoding. This allows an attacker to hide a second request within Transfer-Encoding: it is interpreted by Squid as fragmented and split into a second request delivered in the upstream direction. Squid will then send two different responses to the client, corrupting all downstream caches. \nCVE-STATUS: default\nCVE-REV: default\n \n \nCVE-ID: CVE-2020-15810\nCVE-Crit: MEDIUM\nCVE-DESC: The issue was found in Squid before 4.13 and 5.x before 5.0.4. Due to improper data validation, HTTP request smuggling attacks can be successful against HTTP and HTTPS traffic. This results in cache poisoning. This allows any client, including browser scripts, to bypass local security and poison the proxy cache and any subsequent caches with content from an arbitrary source. When configured for simplified header parsing (the default), Squid retransmits headers containing whitespace characters to upstream servers. When this occurs as a prefix to a Content-Length header, the specified frame length will be ignored by Squid (allowing the conflicting length from another Content-Length header to be used) but retransmitted upstream. \nCVE-STATUS: default\nCVE-REV: default\n \n \nCVE-ID: CVE-2020-14058\nCVE-Crit: HIGH\nCVE-DESC: The issue was discovered in Squid before 4.12 and 5.x before 5.0.3. Due to the use of a potentially dangerous feature, Squid and the default certificate validation helper are vulnerable to denial of service when opening a TLS connection to an attacker-controlled server for HTTPS. This is because unrecognized error values are mapped to NULL, but later code expects each error value to map to a valid error string. \nCVE-STATUS: default\nCVE-REV: default\n \n \nCVE-ID: CVE-2020-15049\nCVE-Crit: HIGH\nCVE-DESC: An issue was found in http / ContentLengthInterpreter.cc in Squid before 4.12 and 5.x before 5.0.3. Request Smuggling and Poisoning attack can be successful against an HTTP cache. The client sends an HTTP request with a Content-Length header containing \"+ \\\"-\"or an unusual shell space character prefix to the length field value. \nCVE-STATUS: Default\nCVE-REV: default\n \n \nCVE-ID: CVE-2020-24606\nCVE-Crit: HIGH\nCVE-DESC: Squid before 4.13 and 5.x before 5.0.4 allows a trusted partner to perform a denial of service using all available CPU cycles while processing a generated Cache Digest response message. This only occurs when cache_peer is used with the cache digests function. The problem exists because the livelocking peerDigestHandleReply () in peer_digest.cc does not handle EOF correctly. \nCVE-STATUS: default\nCVE-REV: default\n \n \nCVE-ID: CVE-2020-25097\nCVE-Crit: HIGH\nCVE-DESC: An issue was found in Squid prior to versions 4.13 and 5.x through 5.0.4. Due to improper input validation, it allows a trusted client to smuggle HTTP requests and access services that are otherwise denied by security controls. This occurs for certain uri_whitespace configuration settings. \nCVE-STATUS: default\nCVE-REV: default\n \n \nCVE-ID: CVE-2020-8517\nCVE-Crit: HIGH\nCVE-DESC: An issue was discovered in Squid before 4.10. Due to improper input validation, the NTLM authentication credential parser in ext_lm_group_acl can write to memory outside of the credential buffer. On systems with memory access protection, this can cause an auxiliary process to terminate unexpectedly. This results in Squid process termination and denial of service for all clients using the proxy. \nCVE-STATUS: default\nCVE-REV: default\n \n \nCVE-ID: CVE-2020-8450\nCVE-Crit: HIGH\nCVE-DESC: An issue was discovered in Squid before 4.10. Due to improper buffer management, a remote client can cause a buffer overflow in a Squid instance acting as a reverse proxy. \nCVE-STATUS: default\nCVE-REV: default\n \n \nCVE-ID: CVE-2020-8449\nCVE-Crit: HIGH\nCVE-DESC: An issue was discovered in Squid before 4.10. Due to improper input validation, it can interpret generated HTTP requests in unexpected ways to access server resources denied by earlier security filters. \nCVE-STATUS: default\nCVE-REV: default\n \n \nCVE-ID: CVE-2021-28116\nCVE-Crit: MEDIUM\nCVE-DESC: Squid prior to versions 4.14 and 5.x through 5.0.5 in some configurations allows information disclosure due to WCCP protocol data being read out of bounds. This can be used as part of a chain to remotely execute code like nobody. \nCVE-STATUS: default\nCVE-REV: default\n \n\n", "published": "2021-07-02T18:10:45", "modified": "2021-07-02T18:10:45", "epss": [{"cve": "CVE-2016-10003", "epss": 0.00287, "percentile": 0.64914, "modified": "2023-09-07"}, {"cve": "CVE-2018-19131", "epss": 0.00182, "percentile": 0.54265, "modified": "2023-06-23"}, {"cve": "CVE-2018-19132", "epss": 0.03092, "percentile": 0.89652, "modified": "2023-06-23"}, {"cve": "CVE-2019-12520", "epss": 0.00795, "percentile": 0.79187, "modified": "2023-06-13"}, {"cve": "CVE-2019-12521", "epss": 0.01564, "percentile": 0.8535, "modified": "2023-06-13"}, {"cve": "CVE-2019-12522", "epss": 0.00044, "percentile": 0.10296, "modified": "2023-06-13"}, {"cve": "CVE-2019-12523", "epss": 0.0087, "percentile": 0.80057, "modified": "2023-06-13"}, {"cve": "CVE-2019-12524", "epss": 0.00958, "percentile": 0.81038, "modified": "2023-06-13"}, {"cve": "CVE-2019-12526", "epss": 0.48472, "percentile": 0.96954, "modified": "2023-06-13"}, {"cve": "CVE-2019-12528", "epss": 0.04578, "percentile": 0.91311, "modified": "2023-06-13"}, {"cve": "CVE-2019-12529", "epss": 0.00745, "percentile": 0.78282, "modified": "2023-06-13"}, {"cve": "CVE-2019-18676", "epss": 0.02118, "percentile": 0.87591, "modified": "2023-06-13"}, {"cve": "CVE-2019-18677", "epss": 0.0032, "percentile": 0.66318, "modified": "2023-06-13"}, {"cve": "CVE-2019-18678", "epss": 0.00677, "percentile": 0.77075, "modified": "2023-06-13"}, {"cve": "CVE-2019-18679", "epss": 0.16644, "percentile": 0.95252, "modified": "2023-06-13"}, {"cve": "CVE-2019-18860", "epss": 0.00241, "percentile": 0.60739, "modified": "2023-06-13"}, {"cve": "CVE-2020-14058", "epss": 0.00425, "percentile": 0.70652, "modified": "2023-06-06"}, {"cve": "CVE-2020-15049", "epss": 0.00738, "percentile": 0.78159, "modified": "2023-06-06"}, {"cve": "CVE-2020-15810", "epss": 0.00191, "percentile": 0.55345, "modified": "2023-06-06"}, {"cve": "CVE-2020-15811", "epss": 0.00145, "percentile": 0.49154, "modified": "2023-06-06"}, {"cve": "CVE-2020-24606", "epss": 0.00992, "percentile": 0.81392, "modified": "2023-06-06"}, {"cve": "CVE-2020-25097", "epss": 0.00265, "percentile": 0.62779, "modified": "2023-06-06"}, {"cve": "CVE-2020-8449", "epss": 0.0063, "percentile": 0.7602, "modified": "2023-06-06"}, {"cve": "CVE-2020-8450", "epss": 0.9668, "percentile": 0.9943, "modified": "2023-06-06"}, {"cve": "CVE-2020-8517", "epss": 0.00388, "percentile": 0.69378, "modified": "2023-06-06"}, {"cve": "CVE-2021-28116", "epss": 0.00623, "percentile": 0.75856, "modified": "2023-05-27"}], "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}, "cvss2": {"cvssV2": {"version": "2.0", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "accessVector": "NETWORK", "accessComplexity": "LOW", "authentication": "NONE", "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "baseScore": 7.5}, "severity": 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"RLSA-2021:1979", "RLSA-2022:1939"]}, {"type": "suse", "idList": ["OPENSUSE-SU-2018:3818-1", "OPENSUSE-SU-2018:3825-1", "OPENSUSE-SU-2019:2540-1", "OPENSUSE-SU-2019:2541-1", "OPENSUSE-SU-2020:0307-1", "OPENSUSE-SU-2020:0606-1", "OPENSUSE-SU-2020:0623-1", "OPENSUSE-SU-2020:1346-1", "OPENSUSE-SU-2020:1369-1", "OPENSUSE-SU-2021:0879-1", "OPENSUSE-SU-2021:1419-1", "OPENSUSE-SU-2021:1961-1", "OPENSUSE-SU-2021:3485-1"]}, {"type": "ubuntu", "idList": ["USN-3192-1", "USN-4059-1", "USN-4065-1", "USN-4065-2", "USN-4213-1", "USN-4289-1", "USN-4356-1", "USN-4446-1", "USN-4446-2", "USN-4477-1", "USN-4551-1", "USN-4895-1", "USN-5104-1"]}, {"type": "ubuntucve", "idList": ["UB:CVE-2016-10003", "UB:CVE-2018-19131", "UB:CVE-2018-19132", "UB:CVE-2019-12520", "UB:CVE-2019-12521", "UB:CVE-2019-12522", "UB:CVE-2019-12523", "UB:CVE-2019-12524", "UB:CVE-2019-12526", "UB:CVE-2019-12528", "UB:CVE-2019-12529", "UB:CVE-2019-18676", "UB:CVE-2019-18677", "UB:CVE-2019-18678", "UB:CVE-2019-18679", "UB:CVE-2019-18860", "UB:CVE-2020-14058", "UB:CVE-2020-15049", "UB:CVE-2020-15810", "UB:CVE-2020-15811", "UB:CVE-2020-24606", "UB:CVE-2020-25097", "UB:CVE-2020-8449", "UB:CVE-2020-8450", "UB:CVE-2020-8517", "UB:CVE-2021-28116"]}, {"type": "veracode", "idList": ["VERACODE:26094", "VERACODE:26127", "VERACODE:26146", "VERACODE:26147", "VERACODE:26840", "VERACODE:26842", "VERACODE:26855", "VERACODE:26891", "VERACODE:26934", "VERACODE:26978", "VERACODE:27026", "VERACODE:27053", "VERACODE:27064", "VERACODE:27113", "VERACODE:27175", "VERACODE:27193", "VERACODE:27274", "VERACODE:27294", "VERACODE:28354", "VERACODE:28425", "VERACODE:29765", "VERACODE:32386"]}]}, "epss": [{"cve": "CVE-2016-10003", "epss": 0.00287, "percentile": 0.64125, "modified": "2023-04-21"}, {"cve": "CVE-2018-19131", "epss": 0.00182, "percentile": 0.53937, "modified": "2023-04-21"}, {"cve": "CVE-2018-19132", "epss": 0.03092, "percentile": 0.89553, "modified": "2023-04-21"}, {"cve": "CVE-2019-12520", "epss": 0.00795, "percentile": 0.79133, "modified": "2023-04-21"}, {"cve": "CVE-2019-12521", "epss": 0.01139, "percentile": 0.82639, "modified": "2023-04-21"}, {"cve": "CVE-2019-12522", "epss": 0.00044, "percentile": 0.10269, "modified": "2023-04-21"}, {"cve": "CVE-2019-12523", "epss": 0.00991, "percentile": 0.81322, "modified": "2023-04-21"}, {"cve": "CVE-2019-12524", "epss": 0.00958, "percentile": 0.80985, "modified": "2023-04-21"}, {"cve": "CVE-2019-12526", "epss": 0.48472, "percentile": 0.9691, "modified": "2023-04-21"}, {"cve": "CVE-2019-12528", "epss": 0.04578, "percentile": 0.91298, "modified": "2023-04-21"}, {"cve": "CVE-2019-12529", "epss": 0.00783, "percentile": 0.78872, "modified": "2023-04-21"}, {"cve": "CVE-2019-18676", "epss": 0.031, "percentile": 0.89565, "modified": "2023-04-21"}, {"cve": "CVE-2019-18677", "epss": 0.0032, "percentile": 0.66112, "modified": "2023-04-21"}, {"cve": "CVE-2019-18678", "epss": 0.00677, "percentile": 0.76986, "modified": "2023-04-21"}, {"cve": "CVE-2019-18679", "epss": 0.16644, "percentile": 0.95208, "modified": "2023-04-21"}, {"cve": "CVE-2019-18860", "epss": 0.00245, "percentile": 0.60935, "modified": "2023-04-21"}, {"cve": "CVE-2020-14058", "epss": 0.00425, "percentile": 0.70492, "modified": "2023-04-21"}, {"cve": "CVE-2020-15049", "epss": 0.00729, "percentile": 0.77971, "modified": "2023-04-21"}, {"cve": "CVE-2020-15810", "epss": 0.00191, "percentile": 0.55172, "modified": "2023-04-21"}, {"cve": "CVE-2020-15811", "epss": 0.00145, "percentile": 0.48952, "modified": "2023-04-21"}, {"cve": "CVE-2020-24606", "epss": 0.00992, "percentile": 0.81335, "modified": "2023-04-21"}, {"cve": "CVE-2020-25097", "epss": 0.00265, "percentile": 0.626, "modified": "2023-04-21"}, {"cve": "CVE-2020-8449", "epss": 0.0063, "percentile": 0.75931, "modified": "2023-04-21"}, {"cve": "CVE-2020-8450", "epss": 0.96609, "percentile": 0.99362, "modified": "2023-04-21"}, {"cve": "CVE-2020-8517", "epss": 0.00388, "percentile": 0.69212, "modified": "2023-04-21"}, {"cve": "CVE-2021-28116", "epss": 0.00458, "percentile": 0.71588, "modified": "2023-04-21"}], "score": {"value": 9.1, "vector": "NONE"}, "vulnersScore": 9.1}, "_state": {"dependencies": 1694215160, "score": 1694215447, "epss": 0}, "_internal": {"score_hash": "e803322bf54407314488ffc4cc427978"}, "affectedPackage": []}

{"rocky": [{"lastseen": "2023-07-24T17:30:01", "description": "An update is available for libecap.\nThis update affects Rocky Linux 8.\nA Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list\nSquid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.\n\nThe following packages have been upgraded to a later upstream version: squid (4.11). (BZ#1829467)\n\nSecurity Fix(es):\n\n* squid: Improper input validation in request allows for proxy manipulation (CVE-2019-12520)\n\n* squid: Off-by-one error in addStackElement allows for heap buffer overflow and crash (CVE-2019-12521)\n\n* squid: Improper input validation in URI processor (CVE-2019-12523)\n\n* squid: Improper access restriction in url_regex may lead to security bypass (CVE-2019-12524)\n\n* squid: Heap overflow issue in URN processing (CVE-2019-12526)\n\n* squid: Information Disclosure issue in FTP Gateway (CVE-2019-12528)\n\n* squid: Out of bounds read in Proxy-Authorization header causes DoS (CVE-2019-12529)\n\n* squid: Denial of service in cachemgr.cgi (CVE-2019-12854)\n\n* squid: Buffer overflow in URI processor (CVE-2019-18676)\n\n* squid: Cross-Site Request Forgery issue in HTTP Request processing (CVE-2019-18677)\n\n* squid: HTTP Request Splitting issue in HTTP message processing (CVE-2019-18678)\n\n* squid: Information Disclosure issue in HTTP Digest Authentication (CVE-2019-18679)\n\n* squid: Mishandled HTML in the host parameter to cachemgr.cgi results in insecure behaviour (CVE-2019-18860)\n\n* squid: Improper input validation issues in HTTP Request processing (CVE-2020-8449)\n\n* squid: Buffer overflow in reverse-proxy configurations (CVE-2020-8450)\n\n* squid: DoS in TLS handshake (CVE-2020-14058)\n\n* squid: Request smuggling and poisoning attack against the HTTP cache (CVE-2020-15049)\n\n* squid: Improper input validation could result in a DoS (CVE-2020-24606)\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 Rocky Linux 8.3 Release Notes linked from the References section.", "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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2020-11-03T12:32:17", "type": "rocky", "title": "squid:4 security, bug fix, and enhancement update", "bulletinFamily": "unix", "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, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2019-12520", "CVE-2019-12521", "CVE-2019-12523", "CVE-2019-12524", "CVE-2019-12526", "CVE-2019-12528", "CVE-2019-12529", "CVE-2019-12854", "CVE-2019-18676", "CVE-2019-18677", "CVE-2019-18678", "CVE-2019-18679", "CVE-2019-18860", "CVE-2020-14058", "CVE-2020-15049", "CVE-2020-24606", "CVE-2020-8449", "CVE-2020-8450"], "modified": "2020-11-03T12:32:17", "id": "RLSA-2020:4743", "href": "https://errata.rockylinux.org/RLSA-2020:4743", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-07-24T17:30:17", "description": "An update is available for libecap.\nThis update affects Rocky Linux 8.\nA Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list\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: HTTP Request Smuggling could result in cache poisoning (CVE-2020-15810)\n\n* squid: HTTP Request Splitting could result in cache poisoning (CVE-2020-15811)\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.", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2020-09-03T12:36:52", "type": "rocky", "title": "squid:4 security update", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.0, "vectorString": "AV:N/AC:L/Au:S/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "SINGLE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2020-15810", "CVE-2020-15811"], "modified": "2020-09-03T12:36:52", "id": "RLSA-2020:3623", "href": "https://errata.rockylinux.org/RLSA-2020:3623", "cvss": {"score": 4.0, "vector": "AV:N/AC:L/Au:S/C:N/I:P/A:N"}}], "redhat": [{"lastseen": "2023-08-04T12:27:58", "description": "Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.\n\nThe following packages have been upgraded to a later upstream version: squid (4.11). (BZ#1829467)\n\nSecurity Fix(es):\n\n* squid: Improper input validation in request allows for proxy manipulation (CVE-2019-12520)\n\n* squid: Off-by-one error in addStackElement allows for heap buffer overflow and crash (CVE-2019-12521)\n\n* squid: Improper input validation in URI processor (CVE-2019-12523)\n\n* squid: Improper access restriction in url_regex may lead to security bypass (CVE-2019-12524)\n\n* squid: Heap overflow issue in URN processing (CVE-2019-12526)\n\n* squid: Information Disclosure issue in FTP Gateway (CVE-2019-12528)\n\n* squid: Out of bounds read in Proxy-Authorization header causes DoS (CVE-2019-12529)\n\n* squid: Denial of service in cachemgr.cgi (CVE-2019-12854)\n\n* squid: Buffer overflow in URI processor (CVE-2019-18676)\n\n* squid: Cross-Site Request Forgery issue in HTTP Request processing (CVE-2019-18677)\n\n* squid: HTTP Request Splitting issue in HTTP message processing (CVE-2019-18678)\n\n* squid: Information Disclosure issue in HTTP Digest Authentication (CVE-2019-18679)\n\n* squid: Mishandled HTML in the host parameter to cachemgr.cgi results in insecure behaviour (CVE-2019-18860)\n\n* squid: Improper input validation issues in HTTP Request processing (CVE-2020-8449)\n\n* squid: Buffer overflow in reverse-proxy configurations (CVE-2020-8450)\n\n* squid: DoS in TLS handshake (CVE-2020-14058)\n\n* squid: Request smuggling and poisoning attack against the HTTP cache (CVE-2020-15049)\n\n* squid: Improper input validation could result in a DoS (CVE-2020-24606)\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 8.3 Release Notes linked from the References section.", "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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2020-11-03T12:32:17", "type": "redhat", "title": "(RHSA-2020:4743) Moderate: squid:4 security, bug fix, and enhancement update", "bulletinFamily": "unix", "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, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2019-12520", "CVE-2019-12521", "CVE-2019-12523", "CVE-2019-12524", "CVE-2019-12526", "CVE-2019-12528", "CVE-2019-12529", "CVE-2019-12854", "CVE-2019-18676", "CVE-2019-18677", "CVE-2019-18678", "CVE-2019-18679", "CVE-2019-18860", "CVE-2020-14058", "CVE-2020-15049", "CVE-2020-24606", "CVE-2020-8449", "CVE-2020-8450"], "modified": "2020-11-04T00:02:31", "id": "RHSA-2020:4743", "href": "https://access.redhat.com/errata/RHSA-2020:4743", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-08-04T12:27:59", "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: HTTP Request Smuggling could result in cache poisoning (CVE-2020-15810)\n\n* squid: HTTP Request Splitting could result in cache poisoning (CVE-2020-15811)\n\n* squid: Information Disclosure issue in FTP Gateway (CVE-2019-12528)\n\n* squid: Improper input validation issues in HTTP Request processing (CVE-2020-8449)\n\n* squid: Buffer overflow in reverse-proxy configurations (CVE-2020-8450)\n\n* squid: Request smuggling and poisoning attack against the HTTP cache (CVE-2020-15049)\n\n* squid: Improper input validation could result in a DoS (CVE-2020-24606)\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.", "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": "2020-09-30T00:17:14", "type": "redhat", "title": "(RHSA-2020:4082) Important: squid security update", "bulletinFamily": "unix", "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, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2019-12528", "CVE-2020-15049", "CVE-2020-15810", "CVE-2020-15811", "CVE-2020-24606", "CVE-2020-8449", "CVE-2020-8450"], "modified": "2020-09-30T06:05:50", "id": "RHSA-2020:4082", "href": "https://access.redhat.com/errata/RHSA-2020:4082", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-08-04T12:27:59", "description": "Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data 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This only occurs when cache_peer is used with the cache digests feature. The problem exists because peerDigestHandleReply() livelocking in peer_digest.cc mishandles EOF. (CVE-2020-24606)\n\n - An issue was discovered in Squid before 4.10. Due to incorrect input validation, it can interpret crafted HTTP requests in unexpected ways to access server resources prohibited by earlier security filters.\n (CVE-2020-8449)\n\n - An issue was discovered in Squid through 4.7. When Squid is parsing ESI, it keeps the ESI elements in ESIContext. ESIContext contains a buffer for holding a stack of ESIElements. When a new ESIElement is parsed, it is added via addStackElement. addStackElement has a check for the number of elements in this buffer, but it's off by 1, leading to a Heap Overflow of 1 element. The overflow is within the same structure so it can't affect adjacent memory blocks, and thus just leads to a crash while processing.\n (CVE-2019-12521)\n\n - An issue was discovered in Squid before 4.9. When handling a URN request, a corresponding HTTP request is made. This HTTP request doesn't go through the access checks that incoming HTTP requests go through. This causes all access checks to be bypassed and allows access to restricted HTTP servers, e.g., an attacker can connect to HTTP servers that only listen on localhost. (CVE-2019-12523)\n\n - An issue was discovered in Squid through 4.7. When handling requests from users, Squid checks its rules to see if the request should be denied. Squid by default comes with rules to block access to the Cache Manager, which serves detailed server information meant for the maintainer. This rule is implemented via url_regex. The handler for url_regex rules URL decodes an incoming request. This allows an attacker to encode their URL to bypass the url_regex check, and gain access to the blocked resource. (CVE-2019-12524)\n\n - An issue was discovered in Squid before 4.9. URN response handling in Squid suffers from a heap-based buffer overflow. When receiving data from a remote server in response to an URN request, Squid fails to ensure that the response can fit within the buffer. This leads to attacker controlled data overflowing in the heap. (CVE-2019-12526)\n\n - An issue was discovered in Squid 2.x through 2.7.STABLE9, 3.x through 3.5.28, and 4.x through 4.7. When Squid is configured to use Basic Authentication, the Proxy-Authorization header is parsed via uudecode.\n uudecode determines how many bytes will be decoded by iterating over the input and checking its table. The length is then used to start decoding the string. There are no checks to ensure that the length it calculates isn't greater than the input buffer. This leads to adjacent memory being decoded as well. An attacker would not be able to retrieve the decoded data unless the Squid maintainer had configured the display of usernames on error pages. (CVE-2019-12529)\n\n - Squid before 4.9, when certain web browsers are used, mishandles HTML in the host (aka hostname) parameter to cachemgr.cgi. (CVE-2019-18860)\n\n - An issue was discovered in Squid before 4.12 and 5.x before 5.0.3. Due to use of a potentially dangerous function, Squid and the default certificate validation helper are vulnerable to a Denial of Service when opening a TLS connection to an attacker-controlled server for HTTPS. This occurs because unrecognized error values are mapped to NULL, but later code expects that each error value is mapped to a valid error string. (CVE-2020-14058)\n\n - An issue was discovered in Squid through 4.7 and 5. When receiving a request, Squid checks its cache to see if it can serve up a response. It does this by making a MD5 hash of the absolute URL of the request.\n If found, it servers the request. The absolute URL can include the decoded UserInfo (username and password) for certain protocols. This decoded info is prepended to the domain. This allows an attacker to provide a username that has special characters to delimit the domain, and treat the rest of the URL as a path or query string. An attacker could first make a request to their domain using an encoded username, then when a request for the target domain comes in that decodes to the exact URL, it will serve the attacker's HTML instead of the real HTML. On Squid servers that also act as reverse proxies, this allows an attacker to gain access to features that only reverse proxies can use, such as ESI. (CVE-2019-12520)\n\n - Due to incorrect string termination, Squid cachemgr.cgi 4.0 through 4.7 may access unallocated memory. On systems with memory access protections, this can cause the CGI process to terminate unexpectedly, resulting in a denial of service for all clients using it. (CVE-2019-12854)\n\n - An issue was discovered in Squid 3.x and 4.x through 4.8. Due to incorrect input validation, there is a heap-based buffer overflow that can result in Denial of Service to all clients using the proxy. Severity is high due to this vulnerability occurring before normal security checks; any remote client that can reach the proxy port can trivially perform the attack via a crafted URI scheme. (CVE-2019-18676)\n\n - An issue was discovered in Squid 3.x and 4.x through 4.8 when the append_domain setting is used (because the appended characters do not properly interact with hostname length restrictions). Due to incorrect message processing, it can inappropriately redirect traffic to origins it should not be delivered to.\n (CVE-2019-18677)\n\n - An issue was discovered in Squid 3.x and 4.x through 4.8. 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overflow and crash (CVE-2019-12521)\n\n - squid: Improper input validation in URI processor (CVE-2019-12523)\n\n - squid: Improper access restriction in url_regex may lead to security bypass (CVE-2019-12524)\n\n - squid: Heap overflow issue in URN processing (CVE-2019-12526)\n\n - squid: Information Disclosure issue in FTP Gateway (CVE-2019-12528)\n\n - squid: Out of bounds read in Proxy-Authorization header causes DoS (CVE-2019-12529)\n\n - squid: Denial of service in cachemgr.cgi (CVE-2019-12854)\n\n - squid: Buffer overflow in URI processor (CVE-2019-18676)\n\n - squid: Cross-Site Request Forgery issue in HTTP Request processing (CVE-2019-18677)\n\n - squid: HTTP Request Splitting issue in HTTP message processing (CVE-2019-18678)\n\n - squid: Information Disclosure issue in HTTP Digest Authentication (CVE-2019-18679)\n\n - squid: Mishandled HTML in the host parameter to cachemgr.cgi results in insecure behaviour (CVE-2019-18860)\n\n - squid: DoS in TLS handshake (CVE-2020-14058)\n\n 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script_dependencies(\"ssh_get_info.nasl\");\n script_require_keys(\"Host/local_checks_enabled\", \"Host/RedHat/release\", \"Host/RedHat/rpm-list\");\n\n exit(0);\n}\n\n\ninclude(\"audit.inc\");\ninclude(\"global_settings.inc\");\ninclude(\"rpm.inc\");\n\n\nif (!get_kb_item(\"Host/local_checks_enabled\")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);\nrelease = get_kb_item(\"Host/RedHat/release\");\nif (isnull(release) || \"Fedora\" >!< release) audit(AUDIT_OS_NOT, \"Fedora\");\nos_ver = pregmatch(pattern: \"Fedora.*release ([0-9]+)\", string:release);\nif (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, \"Fedora\");\nos_ver = os_ver[1];\nif (! preg(pattern:\"^31([^0-9]|$)\", string:os_ver)) audit(AUDIT_OS_NOT, \"Fedora 31\", \"Fedora \" + os_ver);\n\nif (!get_kb_item(\"Host/RedHat/rpm-list\")) audit(AUDIT_PACKAGE_LIST_MISSING);\n\n\ncpu = get_kb_item(\"Host/cpu\");\nif (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);\nif (\"x86_64\" >!< cpu && cpu !~ \"^i[3-6]86$\") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, \"Fedora\", cpu);\n\n\nflag = 0;\nif (rpm_check(release:\"FC31\", reference:\"squid-4.12-1.fc31\", epoch:\"7\")) flag++;\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 tested = pkg_tests_get();\n if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);\n else audit(AUDIT_PACKAGE_NOT_INSTALLED, \"7:squid\");\n}\n", "cvss": {"score": 0.0, "vector": "NONE"}}, {"lastseen": "2023-05-18T15:25:14", "description": "According to the versions of the squid packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :\n\n - An issue was discovered in Squid through 4.7 and 5.\n When receiving a request, Squid checks its cache to see if it can serve up a response. It does this by making a MD5 hash of the absolute URL of the request. If found, it servers the request. The absolute URL can include the decoded UserInfo (username and password) for certain protocols. This decoded info is prepended to the domain. This allows an attacker to provide a username that has special characters to delimit the domain, and treat the rest of the URL as a path or query string. An attacker could first make a request to their domain using an encoded username, then when a request for the target domain comes in that decodes to the exact URL, it will serve the attacker's HTML instead of the real HTML. On Squid servers that also act as reverse proxies, this allows an attacker to gain access to features that only reverse proxies can use, such as ESI.(CVE-2019-12520)\n\n - Squid before 4.13 and 5.x before 5.0.4 allows a trusted peer to perform Denial of Service by consuming all available CPU cycles during handling of a crafted Cache Digest response message. This only occurs when cache_peer is used with the cache digests feature. The problem exists because peerDigestHandleReply() livelocking in peer_digest.cc mishandles EOF.(CVE-2020-24606)\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": "2020-11-03T00:00:00", "type": "nessus", "title": "EulerOS 2.0 SP2 : squid (EulerOS-SA-2020-2399)", "

Advisory ROSA-SA-2021-1976

Description

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