{"id":"CVE-2021-46784","aliases":["ALSA-2022:5526","ALSA-2022:5527","CLSA-2022-1658855510","CLSA-2022-1658856112","DEBIAN-CVE-2021-46784","DSA-5171-1","EUVD-2021-33440","GHSA-f5cp-6rh3-284w","MGASA-2022-0249","OESA-2022-1732","RHSA-2022:5526","RHSA-2022:5527","RHSA-2022:5528","RHSA-2022:5529","RHSA-2022:5530","RHSA-2022:5542","RLSA-2022:5526","SUSE-SU-2022:2359-1","SUSE-SU-2022:2367-1","SUSE-SU-2022:2392-1","SUSE-SU-2022:2553-1","UBUNTU-CVE-2021-46784","USN-5491-1","openSUSE-SU-2024:12157-1"],"status":"published","title":"Important: squid:4 security update","description":"In Squid 3.x through 3.5.28, 4.x through 4.17, and 5.x before 5.6, due to improper buffer management, a Denial of Service can occur when processing long Gopher server 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It handles all requests in a single, non-blocking, I/O-driven process and keeps meta data and implements negative caching of failed requests.\r\n\r\nSecurity Fix(es):\r\n\r\nA vulnerability was found in squid. Due to improper buffer management Squid is vulnerable to a Denial of Service attack when processing Gopher server responses.(CVE-2021-46784)","status":"published","published":"2022-07-01T11:05:00Z","modified":"2026-08-18T01:16:44.914277676Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:39.528805Z"},{"id":"RHSA-2022:5526","title":"Red Hat Security Advisory: squid:4 security update","status":"published","published":"2024-09-16T08:33:15Z","modified":"2025-11-22T12:36:14Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:09.62945Z"},{"id":"RHSA-2022:5527","title":"Red Hat Security Advisory: squid security update","status":"published","published":"2024-09-16T08:33:36Z","modified":"2025-11-22T12:36:15Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:09.62945Z"},{"id":"RHSA-2022:5528","title":"Red Hat Security Advisory: squid:4 security update","status":"published","published":"2024-09-16T08:33:43Z","modified":"2025-11-22T12:36:15Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:09.62945Z"},{"id":"RHSA-2022:5529","title":"Red Hat Security Advisory: squid:4 security update","status":"published","published":"2024-09-16T08:33:29Z","modified":"2025-11-22T12:36:16Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:09.62945Z"},{"id":"RHSA-2022:5530","title":"Red Hat Security Advisory: squid:4 security update","status":"published","published":"2024-09-16T08:33:22Z","modified":"2025-11-22T12:36:16Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:09.62945Z"},{"id":"RHSA-2022:5542","title":"Red Hat Security Advisory: squid security update","status":"published","published":"2024-09-16T08:33:51Z","modified":"2026-06-26T10:59:46Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:09.62945Z"},{"id":"RLSA-2022:5526","title":"Important: squid:4 security 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: DoS when processing gopher server responses (CVE-2021-46784)\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.","status":"published","published":"2022-07-07T10:38:38Z","modified":"2026-02-05T07:00:11.189844Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:24.322216Z"},{"id":"UBUNTU-CVE-2021-46784","description":"In Squid 3.x through 3.5.28, 4.x through 4.17, and 5.x before 5.6, due to improper buffer management, a Denial of Service can occur when processing long Gopher server responses.","status":"published","published":"2021-12-31T00:00:00Z","modified":"2026-10-20T16:45:56.243558401Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:54:30.277322Z"},{"id":"ALSA-2022:5526","title":"Important: squid:4 security 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: DoS when processing gopher server responses (CVE-2021-46784)\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.","status":"published","published":"2022-07-07T00:00:00Z","modified":"2026-10-29T11:01:04.547915521Z","updated_at":"2026-11-02T15:27:51.655726Z"},{"id":"ALSA-2022:5527","title":"Important: squid security 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: DoS when processing gopher server responses (CVE-2021-46784)\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.","status":"published","published":"2022-07-07T00:00:00Z","modified":"2026-10-29T11:31:12.642374158Z","updated_at":"2026-11-02T15:27:51.655726Z"},{"id":"CLSA-2022-1658855510","title":"Fixed CVE-2021-46784 in squid-4.module_el8.4.0+2072+2063f9d1.2.tuxcare.els3","description":"- CVE-2021-46784: Fix DoS when processing gopher server responses","status":"published","published":"2022-07-26T17:11:50Z","modified":"2026-06-01T00:33:19.253902058Z","updated_at":"2026-11-02T15:43:40.176048Z"},{"id":"CLSA-2022-1658856112","title":"Fixed CVE-2021-46784 in squid-1.module_el8.5.0+2073+24c223d9.tuxcare.els2","description":"- CVE-2021-46784: Fix DoS when processing gopher server responses","status":"published","published":"2022-07-26T17:21:52Z","modified":"2026-06-01T00:33:13.513167799Z","updated_at":"2026-11-02T15:43:40.176048Z"},{"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-2022-0249","title":"Updated squid packages fix security vulnerability","description":"Denial of Service in Gopher Processing. (CVE-2021-46784)\n","status":"published","published":"2022-07-05T19:11:26Z","modified":"2026-04-16T04:40:50.707854559Z","updated_at":"2026-11-02T15:49:41.849028Z"},{"id":"openSUSE-SU-2024:12157-1","title":"squid-5.6-1.1 on GA media","description":"These are all security issues fixed in the squid-5.6-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T03:27:21.226837Z","updated_at":"2026-11-02T16:58:35.485255Z"},{"id":"SUSE-SU-2022:2359-1","title":"Security update for squid","description":"This update for squid fixes the following issues:\n\n- CVE-2021-46784: Fixed DoS when processing gopher server responses. (bsc#1200907)\n\n- Update to 5.6:\n    - Improve handling of Gopher responses\n  \n- Changes in 5.5:\n    - fixes regression Bug 5192: esi_parser default is incorrect\n    - Bug 5177: clientca certificates sent to https_port clients\n    - Bug 5090: Must(!request-\u003epinnedConnection()) violation\n    - Kid restart leads to persistent queue overflows, delays/timeouts\n","status":"published","published":"2022-07-12T07:37:15Z","modified":"2026-02-04T04:09:12.982192Z","updated_at":"2026-11-02T15:53:50.965375Z"},{"id":"SUSE-SU-2022:2367-1","title":"Security update for squid","description":"This update for squid fixes the following issues:\n\n- CVE-2021-46784: Fixed DoS when processing gopher server responses. (bsc#1200907)\n- CVE-2021-33620: Fixed DoS in HTTP Response processing (bsc#1185923, bsc#1186654)\n","status":"published","published":"2022-07-12T13:13:57Z","modified":"2026-02-04T02:25:10.141096Z","updated_at":"2026-11-02T15:53:50.965375Z"},{"id":"SUSE-SU-2022:2392-1","title":"Security update for squid","description":"This update for squid fixes the following issues:\n\n- CVE-2020-25097: Fixed HTTP Request Smuggling (bsc#1183436)\n- CVE-2021-28651: Fixed DoS in URN processing (bsc#1185921)\n- CVE-2021-46784: Fixed DoS when processing gopher server responses (bsc#1200907)\n","status":"published","published":"2022-07-13T18:14:01Z","modified":"2026-02-04T04:21:38.335369Z","updated_at":"2026-11-02T15:53:50.965375Z"},{"id":"SUSE-SU-2022:2553-1","title":"Security update for squid","description":"This update for squid fixes the following issues:\n\n- CVE-2021-46784: Fixed DoS when processing gopher server responses. (bsc#1200907)\n- CVE-2021-33620: Fixed DoS in HTTP Response processing (bsc#1185923, bsc#1186654)\n","status":"published","published":"2022-07-26T13:14:42Z","modified":"2026-02-04T02:52:54.873028Z","updated_at":"2026-11-02T15:53:50.965375Z"},{"id":"USN-5491-1","title":"squid, squid3 vulnerability","description":"Joshua Rogers discovered that Squid incorrectly handled the Gopher\nprotocol. A remote attacker could possibly use this issue to cause Squid to\ncrash, resulting in a denial of service.\n","status":"published","published":"2022-06-22T14:03:19Z","modified":"2026-04-27T16:12:32.390198Z","updated_at":"2026-11-02T16:58:16.20937Z"}]}}