{"id":"CVE-2021-28116","aliases":["ALPINE-CVE-2021-28116","ALSA-2022:1939","CLSA-2022-1652719177","CLSA-2022-1652732686","CLSA-2026-1776877737","CLSA-2026-1776941204","CLSA-2026-1776949767","DEBIAN-CVE-2021-28116","DSA-5171-1","EUVD-2021-14817","GHSA-gf37-7jp8-4qpf","GHSA-rgf3-9v3p-qp82","MGASA-2021-0499","OESA-2022-1618","RHSA-2022:1939","RLSA-2022:1939","SUSE-SU-2021:3334-1","SUSE-SU-2021:3485-1","UBUNTU-CVE-2021-28116","USN-5104-1","openSUSE-SU-2021:1419-1","openSUSE-SU-2021:3485-1","openSUSE-SU-2024:11559-1"],"status":"published","title":"Squid through 4.14 and 5.x through 5.0.5, in some configurations, allows information disclosure...","description":"Squid through 4.14 and 5.x through 5.0.5, in some configurations, allows information disclosure because of an out-of-bounds read in WCCP protocol data. 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This can be leveraged as part of a chain for remote code execution as nobody.(CVE-2021-28116)","status":"published","published":"2022-04-25T11:04:53Z","modified":"2026-08-18T01:16:28.955977007Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:52:39.528805Z"},{"id":"RHSA-2022:1939","title":"Red Hat Security Advisory: squid:4 security and bug fix update","status":"published","published":"2024-09-16T07:14:56Z","modified":"2026-03-23T04:47:37.660644Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:53:09.62945Z"},{"id":"RLSA-2022:1939","title":"Moderate: squid:4 security and bug fix update","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: out-of-bounds read in WCCP protocol data may lead to information disclosure (CVE-2021-28116)\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 8.6 Release Notes linked from the References section.","status":"published","published":"2022-05-10T06:39:58Z","modified":"2026-02-04T20:30:11.152261Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:53:24.322216Z"},{"id":"UBUNTU-CVE-2021-28116","description":"Squid through 4.14 and 5.x through 5.0.5, in some configurations, allows information disclosure because of an out-of-bounds read in WCCP protocol data. This can be leveraged as part of a chain for remote code execution as nobody.","status":"published","published":"2021-03-09T22:15:00Z","modified":"2026-10-20T16:45:57.346905506Z","cvss":[{"version":"3.1","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"low"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:26.779273Z"},{"id":"ALSA-2022:1939","title":"Moderate: squid:4 security and bug fix update","description":"Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.\nSecurity Fix(es):\n* squid: out-of-bounds read in WCCP protocol data may lead to information disclosure (CVE-2021-28116)\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.\nAdditional Changes:\nFor detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.","status":"published","published":"2022-05-10T00:00:00Z","modified":"2026-10-29T11:01:17.085691316Z","updated_at":"2026-11-02T15:27:51.196609Z"},{"id":"CLSA-2022-1652719177","title":"Fixed CVE-2021-28116 in squid-4.module_el8.4.0+2033+9782b8ab.2.tuxcare.els2","description":"- CVE-2021-28116: Fix out of bound access when processing WCCPv2 messages\n","status":"published","published":"2022-05-16T16:39:37Z","modified":"2026-06-01T00:31:48.44155693Z","updated_at":"2026-11-02T15:43:40.176048Z"},{"id":"CLSA-2022-1652732686","title":"Fixed CVE-2021-28116 in libecap-2.module_el8.5.0+2035+9782b8ab","description":"\n- CVE-2021-28116: Fix out of bound access when processing WCCPv2 messages","status":"published","published":"2022-05-16T20:24:46Z","modified":"2026-06-01T00:33:13.450903389Z","updated_at":"2026-11-02T15:43:40.176048Z"},{"id":"CLSA-2026-1776877737","title":"squid: Fix of CVE-2021-28116","description":"- CVE-2021-28116: fix out-of-bounds read in WCCPv2 message parsing via\n  stricter bounds validation of security, service, router, view, and\n  capability items","status":"published","published":"2026-04-22T17:09:02Z","modified":"2026-06-01T00:33:28.230751987Z","updated_at":"2026-11-02T15:43:44.384419Z"},{"id":"CLSA-2026-1776941204","title":"squid: Fix of CVE-2021-28116","description":"- CVE-2021-28116: fix out-of-bounds read in WCCPv2 message parsing via\n  stricter bounds validation of security, service, router, view, and\n  capability items","status":"published","published":"2026-04-23T10:46:49Z","modified":"2026-06-01T00:33:08.191436996Z","updated_at":"2026-11-02T15:43:44.384419Z"},{"id":"CLSA-2026-1776949767","title":"squid: Fix of CVE-2021-28116","description":"- CVE-2021-28116: fix out-of-bounds read in WCCPv2 message parsing via\n  stricter bounds validation of security, service, router, view, and\n  capability items","status":"published","published":"2026-04-25T08:38:33Z","modified":"2026-06-01T00:33:18.389131826Z","updated_at":"2026-11-02T15:43:44.384419Z"},{"id":"DSA-5171-1","title":"squid - security update","status":"published","published":"2022-06-27T00:00:00Z","modified":"2026-03-09T02:08:42.520143Z","updated_at":"2026-11-02T15:46:17.543497Z"},{"id":"MGASA-2021-0499","title":"Updated squid packages fix security vulnerability","description":"Updated squid packages fix security vulnerability:\n\nSquid through 4.14 and 5.x through 5.0.5, in some configurations, allows\ninformation disclosure because of an out-of-bounds read in WCCP protocol\ndata. This can be leveraged as part of a chain for remote code execution\nas nobody (CVE-2021-28116).\n\nSquid is updated to 4.17 that fixes this issue and other bugs.\n","status":"published","published":"2021-10-31T11:12:48Z","modified":"2026-04-16T04:41:03.450906306Z","updated_at":"2026-11-02T15:49:41.849028Z"},{"id":"openSUSE-SU-2021:1419-1","title":"Security update for squid","description":"This update for squid fixes the following issues:\n\nUpdate to version 4.17:\n\n- CVE-2021-28116: Fixed a out-of-bounds read in the WCCP protocol (bsc#1189403).\n\nThis update was imported from the SUSE:SLE-15:Update update project.","status":"published","published":"2021-10-31T15:08:04Z","modified":"2025-05-07T18:12:40.249666Z","updated_at":"2026-11-02T16:58:32.266854Z"},{"id":"openSUSE-SU-2021:3485-1","title":"Security update for squid","description":"This update for squid fixes the following issues:\n\nUpdate to version 4.17:\n\n- CVE-2021-28116: Fixed a out-of-bounds read in the WCCP protocol (bsc#1189403).\n","status":"published","published":"2021-10-20T14:18:03Z","modified":"2026-02-04T02:25:31.909536Z","updated_at":"2026-11-02T16:58:32.266854Z"},{"id":"openSUSE-SU-2024:11559-1","title":"squid-5.2-1.1 on GA media","description":"These are all security issues fixed in the squid-5.2-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T02:16:11.502039Z","updated_at":"2026-11-02T16:58:35.195147Z"},{"id":"SUSE-SU-2021:3334-1","title":"Security update for squid","description":"This update for squid fixes the following issues:\n\nUpdate to version 4.17:\n\n- CVE-2021-28116: Fixed a out-of-bounds read in the WCCP protocol (bsc#1189403).\n","status":"published","published":"2021-10-11T15:03:22Z","modified":"2026-02-04T04:29:44.853477Z","updated_at":"2026-11-02T15:53:49.605187Z"},{"id":"SUSE-SU-2021:3485-1","title":"Security update for squid","description":"This update for squid fixes the following issues:\n\nUpdate to version 4.17:\n\n- CVE-2021-28116: Fixed a out-of-bounds read in the WCCP protocol (bsc#1189403).\n","status":"published","published":"2021-10-20T14:18:02Z","modified":"2026-02-04T03:06:01.671902Z","updated_at":"2026-11-02T15:53:49.605187Z"},{"id":"USN-5104-1","title":"squid, squid3 vulnerability","description":"Lyu discovered that Squid incorrectly handled WCCP protocol data. A remote\nattacker could use this issue to cause Squid to crash, resulting in a\ndenial of service, or possibly obtain sensitive information.\n","status":"published","published":"2021-10-05T14:05:18Z","modified":"2026-04-27T15:57:30.866782Z","updated_at":"2026-11-02T16:58:15.683829Z"}]}}