{"id":"CVE-2019-12529","aliases":["ALPINE-CVE-2019-12529","ALSA-2020:4743","CLSA-2026-1776878817","CLSA-2026-1776879277","CLSA-2026-1777539404","CLSA-2026-1777541147","DEBIAN-CVE-2019-12529","DLA-1858-1","DLA-2278-1","DSA-4507-1","EUVD-2019-4124","GHSA-99gm-2796-7c8p","MGASA-2019-0265","MGASA-2019-0266","RHSA-2020:4743","RLSA-2020:4743","SUSE-SU-2019:2089-1","SUSE-SU-2019:2089-2","SUSE-SU-2019:2975-1","SUSE-SU-2020:14460-1","UBUNTU-CVE-2019-12529","USN-4065-1","openSUSE-SU-2019:2540-1","openSUSE-SU-2019:2541-1","openSUSE-SU-2024:11403-1"],"status":"published","title":"An issue was discovered in Squid 2.x through 2.7.STABLE9, 3.x through 3.5.28, and 4.x through 4.7...","description":"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. 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.","severity":{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.0778,"percentile":0.94699,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-125","CWE-200"],"published":"2019-07-11T00:00:00Z","modified":"2026-10-29T11:00:17Z","fixes":[{"ecosystem":"Alpine:v3.10","package":"squid","fixed_in":["4.8-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.9","package":"squid","fixed_in":["4.8-r0"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"squid","fixed_in":["4.8-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"squid","fixed_in":["4.8-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"squid","fixed_in":["4.8-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:16.04:LTS","package":"squid3","fixed_in":["3.5.12-1ubuntu7.8"],"sources":["osv"]},{"ecosystem":"Ubuntu:18.04:LTS","package":"squid3","fixed_in":["3.5.27-1ubuntu1.3"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpine:v3.10","package":"squid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0"},{"fixed":"4.8-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.9","package":"squid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0"},{"fixed":"4.8-r0"}]}]},{"source":"osv","ecosystem":"AlmaLinux:8","package":"libecap","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.1-2.module_el8.6.0+2741+01592ae8"}]}],"bundled":18},{"source":"osv","ecosystem":"AlmaLinux:8","package":"libecap-devel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.1-2.module_el8.6.0+2741+01592ae8"}]}],"bundled":18},{"source":"osv","ecosystem":"TuxCare:CentOS:6","package":"squid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:3.1.23-30.el6.tuxcare.els17"}]}],"bundled":13},{"source":"osv","ecosystem":"TuxCare:OracleLinux:6","package":"squid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:3.1.23-30.el6.tuxcare.els17"}]}],"bundled":13},{"source":"osv","ecosystem":"TuxCare:OracleLinux:6","package":"squid34","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:3.4.14-16.el6.tuxcare.els13"}]}],"bundled":12},{"source":"osv","ecosystem":"TuxCare:CentOS:6","package":"squid34","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:3.4.14-16.el6.tuxcare.els13"}]}],"bundled":12},{"source":"osv","ecosystem":"Debian:12","package":"squid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"squid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"squid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8-1"}]}]},{"source":"osv","ecosystem":"Debian:8","package":"squid3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.8-6+deb8u8"}]}],"versions":["3.4.8-6","3.4.8-6+deb8u1","3.4.8-6+deb8u2","3.4.8-6+deb8u2~bpo70+1","3.4.8-6+deb8u3","3.4.8-6+deb8u4","3.4.8-6+deb8u5","3.4.8-6+deb8u6","3.4.8-6+deb8u7"],"bundled":2},{"source":"osv","ecosystem":"Debian:9","package":"squid3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.23-5+deb9u2"}]}],"versions":["3.5.23-5","3.5.23-5+deb9u1"],"bundled":19},{"source":"osv","ecosystem":"Debian:10","package":"squid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.6-1+deb10u1"}]}],"versions":["4.6-1"],"bundled":5},{"source":"osv","ecosystem":"Mageia:6","package":"squid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.27-1.2.mga6"}]}],"bundled":3},{"source":"osv","ecosystem":"Mageia:7","package":"squid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8-1.mga7"}]}],"bundled":5},{"source":"osv","ecosystem":"Red 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"https://www.suse.com/security/cve/CVE-2016-4052","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-4553","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-4555","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-1000024","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-1000027","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-1172","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-19131","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-19132","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-15810","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-15811","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-24606","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-25097","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-28651","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-28652","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-28662","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-31806","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2019-12529","description":"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. 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.","status":"published","published":"2019-07-11T18:33:55Z","modified":"2024-08-04T23:24:38.47Z","updated_at":"2026-11-02T14:20:24.025419Z"}],"euvd":[{"id":"EUVD-2019-4124","description":"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. 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.","status":"published","published":"2019-07-11T18:33:55Z","modified":"2024-08-04T23:24:38Z","updated_at":"2026-11-03T02:40:45.434408Z"}],"ghsa":[{"id":"GHSA-99gm-2796-7c8p","title":"An issue was discovered in Squid 2.x through 2.7.STABLE9, 3.x through 3.5.28, and 4.x through 4.7...","description":"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. 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.","status":"published","published":"2022-05-24T16:50:06Z","modified":"2024-04-04T01:14:59Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-125","CWE-200"],"updated_at":"2026-11-02T14:55:56.730661Z"}],"nvd":[{"id":"CVE-2019-12529","description":"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. 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.","status":"published","published":"2019-07-11T19:15:13.157Z","modified":"2026-06-17T02:14:50.113Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:05:19.195714Z"}],"osv":[{"id":"ALPINE-CVE-2019-12529","description":"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. 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.","status":"published","published":"2019-07-11T19:15:13.157Z","modified":"2026-09-21T06:17:52.466083372Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:27:47.663013Z"},{"id":"CVE-2019-12529","description":"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. 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.","status":"published","published":"2019-07-11T19:15:13.157Z","modified":"2026-10-20T10:50:40.195720929Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:10.718934Z"},{"id":"DEBIAN-CVE-2019-12529","description":"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. 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.","status":"published","published":"2019-07-11T19:15:13.157Z","modified":"2026-09-21T07:01:48.9989747Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:31.467893Z"},{"id":"RHSA-2020:4743","title":"Red Hat Security Advisory: squid:4 security, bug fix, and enhancement update","status":"published","published":"2024-09-16T04:22:06Z","modified":"2026-07-04T10:01:03Z","cvss":[{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:07.57369Z"},{"id":"RLSA-2020:4743","title":"Moderate: squid:4 security, bug fix, and enhancement update","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 Rocky Linux 8.3 Release Notes linked from the References section.","status":"published","published":"2020-11-03T12:32:17Z","modified":"2026-02-04T20:00:07.394661Z","cvss":[{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:23.969672Z"},{"id":"UBUNTU-CVE-2019-12529","description":"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. 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.","status":"published","published":"2019-07-11T00:00:00Z","modified":"2026-02-04T04:18:26.370989Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"},{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:19.202697Z"},{"id":"ALSA-2020:4743","title":"Moderate: squid:4 security, bug fix, and enhancement update","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 AlmaLinux Release Notes linked from the References section.","status":"published","published":"2020-11-03T12:32:17Z","modified":"2026-10-29T11:00:17.827616275Z","updated_at":"2026-11-02T15:27:51.196609Z"},{"id":"CLSA-2026-1776878817","title":"squid: Fix of 13 CVEs","description":"- CVE-2018-1000027: fix NULL pointer dereference in\n  clientFollowXForwardedForCheck for transactions without a client connection\n- CVE-2018-19131: fix XSS via X.509 certificate fields rendered unescaped in\n  SSL error pages\n- CVE-2019-12520: prevent cache poisoning by suppressing URL userinfo from\n  absolute URLs for non-FTP schemes\n- CVE-2019-12523: reject URIs with invalid scheme (non-alpha first char) and\n  malformed URN NID\n- CVE-2019-12526: add Must() guard in URN response handling to prevent\n  re-entry with zero-length buffer\n- CVE-2019-12528: fix FTP directory listing parser info leak from heap into\n  HTTP responses\n- CVE-2019-12529: fix Basic auth uudecode out-of-bounds read/write via proper\n  bounds checking\n- CVE-2019-13345: fix multiple XSS issues in cachemgr.cgi via rfc1738-escaping\n  user_name and auth parameters\n- CVE-2019-18676: cap URI scheme length and reject malformed scheme prefixes\n  to prevent buffer overflow in urlParse\n- CVE-2019-18677: prevent CSRF via append_domain truncation by rejecting\n  oversized domain appends\n- CVE-2019-18678: reject HTTP headers with whitespace between field-name and\n  colon per RFC 7230 to prevent request splitting\n- CVE-2019-18679: remove raw heap pointer from Digest nonce hash input to\n  prevent information disclosure and ASLR bypass\n- CVE-2019-18860: fix cachemgr.cgi XSS/info-disclosure via hostname parameter\n  validation","status":"published","published":"2026-10-21T13:51:54Z","modified":"2026-10-26T09:31:38.642283922Z","updated_at":"2026-11-02T15:43:44.384419Z"},{"id":"CLSA-2026-1776879277","title":"squid: Fix of 13 CVEs","description":"- CVE-2018-1000027: fix NULL pointer dereference in\n  clientFollowXForwardedForCheck for transactions without a client connection\n- CVE-2018-19131: fix XSS via X.509 certificate fields rendered unescaped in\n  SSL error pages\n- CVE-2019-12520: prevent cache poisoning by suppressing URL userinfo from\n  absolute URLs for non-FTP schemes\n- CVE-2019-12523: reject URIs with invalid scheme (non-alpha first char) and\n  malformed URN NID\n- CVE-2019-12526: add Must() guard in URN response handling to prevent\n  re-entry with zero-length buffer\n- CVE-2019-12528: fix FTP directory listing parser info leak from heap into\n  HTTP responses\n- CVE-2019-12529: fix Basic auth uudecode out-of-bounds read/write via proper\n  bounds checking\n- CVE-2019-13345: fix multiple XSS issues in cachemgr.cgi via rfc1738-escaping\n  user_name and auth parameters\n- CVE-2019-18676: cap URI scheme length and reject malformed scheme prefixes\n  to prevent buffer overflow in urlParse\n- CVE-2019-18677: prevent CSRF via append_domain truncation by rejecting\n  oversized domain appends\n- CVE-2019-18678: reject HTTP headers with whitespace between field-name and\n  colon per RFC 7230 to prevent request splitting\n- CVE-2019-18679: remove raw heap pointer from Digest nonce hash input to\n  prevent information disclosure and ASLR bypass\n- CVE-2019-18860: fix cachemgr.cgi XSS/info-disclosure via hostname parameter\n  validation","status":"published","published":"2026-04-23T18:38:25Z","modified":"2026-06-01T00:33:26.251745206Z","updated_at":"2026-11-02T15:43:44.384419Z"},{"id":"CLSA-2026-1777539404","title":"squid34: Fix of 12 CVEs","description":"- CVE-2019-12525: fix heap buffer over-read in Digest auth parameter parsing\n- CVE-2018-1000027: fix NULL pointer dereference in X-Forwarded-For logging for internal transactions\n- CVE-2018-19131: escape certificate field injection via %D in ERR_SECURE_CONNECT_FAIL page\n- CVE-2018-19132: fix memory leak when parsing denied or malformed SNMP packets\n- CVE-2019-13345: escape user_name and pub_auth parameters in cachemgr.cgi to prevent reflected XSS\n- CVE-2019-18860: validate hostname parameter in cachemgr.cgi to prevent reflected XSS\n- CVE-2019-18677: prevent hostname truncation when append_domain expands origin-relative domains\n- CVE-2019-18679: remove in-memory pointer from Digest nonce hash input (ASLR bypass)\n- CVE-2019-18678: reject HTTP requests with BWS between header field-name and colon (RFC 7230 3.2.4)\n- CVE-2019-12523: validate URN NID per RFC 8141 to prevent SSRF via crafted urn: requests\n- CVE-2019-12528: track FTP listing token positions to avoid strstr-based over-read into adjacent heap\n- CVE-2019-12529: replace uudecode with base64_decode in Basic auth to bound input-buffer reads","status":"published","published":"2026-04-30T08:56:49Z","modified":"2026-10-21T10:48:12.180143482Z","updated_at":"2026-11-02T15:43:44.384419Z"},{"id":"CLSA-2026-1777541147","title":"squid34: Fix of 12 CVEs","description":"- CVE-2019-12525: fix heap buffer over-read in Digest auth parameter parsing\n- CVE-2018-1000027: fix NULL pointer dereference in X-Forwarded-For logging for internal transactions\n- CVE-2018-19131: escape certificate field injection via %D in ERR_SECURE_CONNECT_FAIL page\n- CVE-2018-19132: fix memory leak when parsing denied or malformed SNMP packets\n- CVE-2019-13345: escape user_name and pub_auth parameters in cachemgr.cgi to prevent reflected XSS\n- CVE-2019-18860: validate hostname parameter in cachemgr.cgi to prevent reflected XSS\n- CVE-2019-18677: prevent hostname truncation when append_domain expands origin-relative domains\n- CVE-2019-18679: remove in-memory pointer from Digest nonce hash input (ASLR bypass)\n- CVE-2019-18678: reject HTTP requests with BWS between header field-name and colon (RFC 7230 3.2.4)\n- CVE-2019-12523: validate URN NID per RFC 8141 to prevent SSRF via crafted urn: requests\n- CVE-2019-12528: track FTP listing token positions to avoid strstr-based over-read into adjacent heap\n- CVE-2019-12529: replace uudecode with base64_decode in Basic auth to bound input-buffer reads","status":"published","published":"2026-05-02T01:02:36Z","modified":"2026-10-21T10:47:49.998050891Z","updated_at":"2026-11-02T15:43:44.384419Z"},{"id":"DLA-1858-1","title":"squid3 - security update","status":"published","published":"2019-07-20T00:00:00Z","modified":"2026-03-09T01:23:16.615934Z","updated_at":"2026-11-02T15:46:09.777694Z"},{"id":"DLA-2278-1","title":"squid3 - security update","status":"published","published":"2020-07-10T00:00:00Z","modified":"2026-03-09T01:21:50.659924Z","updated_at":"2026-11-02T15:46:10.227108Z"},{"id":"DSA-4507-1","title":"squid - security update","status":"published","published":"2019-08-24T00:00:00Z","modified":"2026-03-09T02:10:22.063474Z","updated_at":"2026-11-02T15:46:16.862196Z"},{"id":"MGASA-2019-0265","title":"Updated squid packages fix security vulnerabilities","description":"Updated squid packages fix security vulnerabilities:\n\nIt was discovered that Squid incorrectly handled Digest authentication.\nA remote attacker could possibly use this issue to cause Squid to crash,\nresulting in a denial of service (CVE-2019-12525).\n\nIt was discovered that Squid incorrectly handled Basic authentication.\nA remote attacker could possibly use this issue to cause Squid to crash,\nresulting in a denial of service (CVE-2019-12529).\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","status":"published","published":"2019-09-12T19:09:52Z","modified":"2026-04-16T04:43:53.376798205Z","updated_at":"2026-11-02T15:49:40.793816Z"},{"id":"MGASA-2019-0266","title":"Updated squid packages fix security vulnerabilities","description":"Updated squid packages fix security vulnerabilities:\n\nIt was discovered that Squid incorrectly handled Digest authentication.\nA remote attacker could possibly use this issue to cause Squid to crash,\nresulting in a denial of service (CVE-2019-12525).\n\nIt was discovered that Squid incorrectly handled Basic authentication.\nA remote attacker could use this issue to cause Squid to crash, resulting\nin a denial of service, or possibly execute arbitrary code (CVE-2019-12527).\n\nIt was discovered that Squid incorrectly handled Basic authentication.\nA remote attacker could possibly use this issue to cause Squid to crash,\nresulting in a denial of service (CVE-2019-12529).\n\nDue to incorrect string termination, Squid cachemgr.cgi 4.0 through 4.7\nmay access unallocated memory. On systems with memory access protections,\nthis can cause the CGI process to terminate unexpectedly, resulting in a\ndenial of service for all clients using it (CVE-2019-12854).\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\nThe squid package has been updated to version 4.8, fixing these issues and\nother bugs.\n","status":"published","published":"2019-09-12T19:09:52Z","modified":"2026-04-16T04:44:43.56211036Z","updated_at":"2026-11-02T15:49:40.793816Z"},{"id":"openSUSE-SU-2019:2540-1","title":"Security update for squid","description":"This update for squid to version 4.9 fixes the following issues:\n\nSecurity issues fixed: \n\n- CVE-2019-13345: Fixed multiple cross-site scripting vulnerabilities in cachemgr.cgi (bsc#1140738).\n- CVE-2019-12526: Fixed potential remote code execution during URN processing (bsc#1156326).\n- CVE-2019-12523,CVE-2019-18676: Fixed multiple improper validations in URI processing (bsc#1156329).\n- CVE-2019-18677: Fixed Cross-Site Request Forgery in HTTP Request processing (bsc#1156328).\n- CVE-2019-18678: Fixed incorrect message parsing which could have led to HTTP request splitting issue (bsc#1156323).\n- CVE-2019-18679: Fixed information disclosure when processing HTTP Digest Authentication (bsc#1156324).\n\nOther issues addressed:\n\n * Fixed DNS failures when peer name was configured with any upper case characters\n * Fixed several rock cache_dir corruption issues\n\nThis update was imported from the SUSE:SLE-15:Update update project.","status":"published","published":"2019-11-21T13:25:53Z","modified":"2026-02-04T03:02:00.221686Z","updated_at":"2026-11-02T16:58:31.152112Z"},{"id":"openSUSE-SU-2019:2541-1","title":"Security update for squid","description":"This update for squid to version 4.9 fixes the following issues:\n\nSecurity issues fixed: \n\n- CVE-2019-13345: Fixed multiple cross-site scripting vulnerabilities in cachemgr.cgi (bsc#1140738).\n- CVE-2019-12526: Fixed potential remote code execution during URN processing (bsc#1156326).\n- CVE-2019-12523,CVE-2019-18676: Fixed multiple improper validations in URI processing (bsc#1156329).\n- CVE-2019-18677: Fixed Cross-Site Request Forgery in HTTP Request processing (bsc#1156328).\n- CVE-2019-18678: Fixed incorrect message parsing which could have led to HTTP request splitting issue (bsc#1156323).\n- CVE-2019-18679: Fixed information disclosure when processing HTTP Digest Authentication (bsc#1156324).\n\nOther issues addressed:\n\n * Fixed DNS failures when peer name was configured with any upper case characters\n * Fixed several rock cache_dir corruption issues\n\nThis update was imported from the SUSE:SLE-15:Update update project.","status":"published","published":"2019-11-21T13:26:12Z","modified":"2026-02-04T03:23:00.068716Z","updated_at":"2026-11-02T16:58:31.152112Z"},{"id":"openSUSE-SU-2024:11403-1","title":"squid-4.16-1.5 on GA media","description":"These are all security issues fixed in the squid-4.16-1.5 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T03:28:26.444707Z","updated_at":"2026-11-02T16:58:35.195147Z"},{"id":"SUSE-SU-2019:2089-1","title":"Security update for squid","description":"This update for squid fixes the following issues:\n\nSecurity issue fixed:\n\n- CVE-2019-12529: Fixed a potential denial of service associated with HTTP Basic Authentication credentials (bsc#1141329).\n- CVE-2019-12525: Fixed a denial of service during processing of HTTP Digest Authentication credentials (bsc#1141332).\n- CVE-2019-13345: Fixed a cross site scripting vulnerability via user_name or auth parameter in cachemgr.cgi (bsc#1140738).\n","status":"published","published":"2019-08-08T09:51:19Z","modified":"2026-02-04T02:26:43.962377Z","updated_at":"2026-11-02T15:53:46.44301Z"},{"id":"SUSE-SU-2019:2089-2","title":"Security update for squid","description":"This update for squid fixes the following issues:\n\nSecurity issue fixed:\n\n- CVE-2019-12529: Fixed a potential denial of service associated with HTTP Basic Authentication credentials (bsc#1141329).\n- CVE-2019-12525: Fixed a denial of service during processing of HTTP Digest Authentication credentials (bsc#1141332).\n- CVE-2019-13345: Fixed a cross site scripting vulnerability via user_name or auth parameter in cachemgr.cgi (bsc#1140738).\n","status":"published","published":"2019-08-08T09:51:19Z","modified":"2026-02-04T03:32:49.360123Z","updated_at":"2026-11-02T15:53:46.44301Z"},{"id":"SUSE-SU-2019:2975-1","title":"Security update for squid","description":"This update for squid to version 4.9 fixes the following issues:\n\nSecurity issues fixed: \n\n- CVE-2019-13345: Fixed multiple cross-site scripting vulnerabilities in cachemgr.cgi (bsc#1140738).\n- CVE-2019-12526: Fixed potential remote code execution during URN processing (bsc#1156326).\n- CVE-2019-12523,CVE-2019-18676: Fixed multiple improper validations in URI processing (bsc#1156329).\n- CVE-2019-18677: Fixed Cross-Site Request Forgery in HTTP Request processing (bsc#1156328).\n- CVE-2019-18678: Fixed incorrect message parsing which could have led to HTTP request splitting issue (bsc#1156323).\n- CVE-2019-18679: Fixed information disclosure when processing HTTP Digest Authentication (bsc#1156324).\n\nOther issues addressed:\n\n * Fixed DNS failures when peer name was configured with any upper case characters\n * Fixed several rock cache_dir corruption issues\n","status":"published","published":"2019-11-14T16:02:41Z","modified":"2026-02-04T03:09:27.896801Z","updated_at":"2026-11-02T15:53:47.06185Z"},{"id":"SUSE-SU-2020:14460-1","title":"Security update for squid3","description":"This update for squid3 fixes the following issues:\n\n- Fixed a Cache Poisoning and Request Smuggling\n  attack (CVE-2020-15049, bsc#1173455)\n- Fixed incorrect buffer handling that can\n  result in cache poisoning, remote execution, and\n  denial of service attacks when processing ESI responses\n  (CVE-2019-12519, CVE-2019-12521, bsc#1169659)\n\n- Fixed handling of hostname in\n  cachemgr.cgi (CVE-2019-18860, bsc#1167373)\n- Fixed a potential remote execution vulnerability\n  when using HTTP Digest Authentication (CVE-2020-11945, bsc#1170313)\n- Fixed a potential ACL bypass, cache-bypass\n  and cross-site scripting attack when processing invalid HTTP\n  Request messages (CVE-2019-12520, CVE-2019-12524, bsc#1170423)\n- Fixed a potential denial of service when\n  processing TLS certificates during HTTPS connections\n  (CVE-2020-14059, bsc#1173304)\n\n- Fixed a potential denial of service associated\n  with incorrect buffer management of HTTP Basic Authentication\n  credentials (bsc#1141329, CVE-2019-12529)\n- Fixed an incorrect buffer management resulting\n  in vulnerability to a denial of service during processing of\n  HTTP Digest Authentication credentials (bsc#1141332, CVE-2019-12525)\n- Fix XSS via user_name or auth parameter\n  in cachemgr.cgi (bsc#1140738, CVE-2019-13345)\n- Fixed a potential code execution vulnerability\n  (CVE-2019-12526, bsc#1156326)\n- Fixed HTTP Request Splitting in HTTP\n  message processing and information disclosure in\n  HTTP Digest Authentication\n  (CVE-2019-18678, CVE-2019-18679, bsc#1156323, bsc#1156324)\n- Fixed a security issue allowing a remote\n  client ability to cause use a buffer overflow when squid is\n  acting as reverse-proxy.\n  (CVE-2020-8449, CVE-2020-8450, bsc#1162687)\n- Fixed a security issue allowing for information\n  disclosure in FTP gateway (CVE-2019-12528, bsc#1162689)\n- Fixed a security issue in ext_lm_group_acl\n  when processing NTLM Authentication credentials.\n  (CVE-2020-8517, bsc#1162691)\n\n- Fixed Cross-Site Request Forgery in\n  HTTP Request processing (CVE-2019-18677, bsc#1156328)\n\n- Disable urn parsing and parsing of\n  unknown schemes (bsc#1156329, CVE-2019-12523, CVE-2019-18676)\n","status":"published","published":"2020-08-24T12:06:51Z","modified":"2025-05-02T04:08:43.365999Z","updated_at":"2026-11-02T15:53:47.634847Z"},{"id":"USN-4065-1","title":"squid, squid3 vulnerabilities","description":"It was discovered that Squid incorrectly handled Digest authentication. A\nremote attacker could possibly use this issue to cause Squid to crash,\nresulting in a denial of service. (CVE-2019-12525)\n\nIt was discovered that Squid incorrectly handled Basic authentication. A\nremote attacker could use this issue to cause Squid to crash, resulting in\na denial of service, or possibly execute arbitrary code. This issue only\naffected Ubuntu 19.04. (CVE-2019-12527)\n\nIt was discovered that Squid incorrectly handled Basic authentication. A\nremote attacker could possibly use this issue to cause Squid to crash,\nresulting in a denial of service. (CVE-2019-12529)\n","status":"published","published":"2019-07-18T17:22:23Z","modified":"2026-02-10T04:41:34Z","updated_at":"2026-11-02T16:58:14.019824Z"}]}}