{"id":"CVE-2021-4185","aliases":["ALPINE-CVE-2021-4185","AZL-7420","CLSA-2026-1777312619","DEBIAN-CVE-2021-4185","DLA-2967-1","DLA-3906-1","EUVD-2021-34045","GHSA-wm4g-hw88-g25h","MGASA-2022-0004","OESA-2022-1610","SUSE-SU-2022:0375-1","UBUNTU-CVE-2021-4185","USN-7552-1","openSUSE-SU-2022:0375-1","openSUSE-SU-2024:11703-1"],"status":"published","title":"Infinite loop in the RTMPT dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of...","description":"Infinite loop in the RTMPT dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture 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Advisory","advisory"]},{"url":"https://lists.debian.org/debian-lts-announce/2024/09/msg00049.html","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-4185","tags":["web","advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Q6XGBKWSQFCVYUN4ZK3O3NJIFP3OAFVT"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R5AEK3XTOIOGCGUILUFISMGX54YJXWGJ"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Q6XGBKWSQFCVYUN4ZK3O3NJIFP3OAFVT"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R5AEK3XTOIOGCGUILUFISMGX54YJXWGJ"},{"url":"https://github.com/advisories/GHSA-wm4g-hw88-g25h"},{"url":"https://security.alpinelinux.org/vuln/CVE-2021-4185","tags":["advisory"]},{"url":"https://errata.tuxcare.com/els_os/almalinux9.2esu/CLSA-2026-1777312619.html","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-4185","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2022-0004.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=29832","tags":["report"]},{"url":"https://www.wireshark.org/security/wnpa-sec-2021-16","tags":["web"]},{"url":"https://www.wireshark.org/security/wnpa-sec-2021-17","tags":["web"]},{"url":"https://www.wireshark.org/security/wnpa-sec-2021-18","tags":["web"]},{"url":"https://www.wireshark.org/security/wnpa-sec-2021-20","tags":["web"]},{"url":"https://www.wireshark.org/security/wnpa-sec-2021-21","tags":["web"]},{"url":"https://www.wireshark.org/docs/relnotes/wireshark-3.4.11.html","tags":["web"]},{"url":"https://www.wireshark.org/news/20211229.html","tags":["web"]},{"url":"https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-1610","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-22207","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-22191","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-4181","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2022/suse-su-20220375-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1194166","tags":["report"]},{"url":"https://bugzilla.suse.com/1194167","tags":["report"]},{"url":"https://bugzilla.suse.com/1194168","tags":["report"]},{"url":"https://bugzilla.suse.com/1194169","tags":["report"]},{"url":"https://bugzilla.suse.com/1194170","tags":["report"]},{"url":"https://bugzilla.suse.com/1194171","tags":["report"]},{"url":"https://bugzilla.suse.com/1194780","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2021-4181","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-4182","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-4183","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-4184","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-4185","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-4190","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2021-4185","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-4185","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-7552-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-4182","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-4186","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-39929","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2022-0581","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2022-0582","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2022-0583","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2022-0585","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2022-0586","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2022-3190","tags":["report"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/JAOH336QWFQFZUXO5FOHF4P6VJNY7R4L/","tags":["advisory"]},{"url":"","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2021-4185","description":"Infinite loop in the RTMPT dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file","status":"published","published":"2021-12-30T00:00:00Z","modified":"2025-11-03T21:45:18.24Z","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","assessor":"cna"}],"updated_at":"2026-11-02T14:33:08.045407Z"}],"euvd":[{"id":"EUVD-2021-34045","description":"Infinite loop in the RTMPT dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file","status":"published","published":"2021-12-30T00:00:00Z","modified":"2025-11-03T21:45:18Z","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":"2026-11-02T19:49:31.7352Z"}],"ghsa":[{"id":"GHSA-wm4g-hw88-g25h","title":"Infinite loop in the RTMPT dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of...","description":"Infinite loop in the RTMPT dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file","status":"published","published":"2021-12-31T00:00:19Z","modified":"2025-11-04T00:31:32Z","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"}],"cwes":["CWE-835"],"updated_at":"2026-11-02T15:04:28.385807Z"}],"nvd":[{"id":"CVE-2021-4185","description":"Infinite loop in the RTMPT dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file","status":"published","published":"2021-12-30T22:15:10.363Z","modified":"2026-06-17T04:19:10.637Z","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","assessor":"secondary"},{"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","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-835"],"updated_at":"2026-11-02T14:07:02.977492Z"}],"osv":[{"id":"ALPINE-CVE-2021-4185","description":"Infinite loop in the RTMPT dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file","status":"published","published":"2021-12-30T22:15:10.363Z","modified":"2026-11-03T06:32:41.503489392Z","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":"2026-11-03T07:17:02.90744Z"},{"id":"AZL-7420","title":"CVE-2021-4185 affecting package wireshark for versions less than 3.4.14-1","description":"Infinite loop in the RTMPT dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file","status":"published","published":"2021-12-30T22:15:10Z","modified":"2026-04-21T04:38:41.174682Z","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":"2026-11-02T15:28:09.474476Z"},{"id":"CVE-2021-4185","description":"Infinite loop in the RTMPT dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file","status":"published","published":"2021-12-30T22:15:10.363Z","modified":"2026-10-24T10:50:25.784699515Z","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":"2026-11-02T15:44:21.557945Z"},{"id":"DEBIAN-CVE-2021-4185","description":"Infinite loop in the RTMPT dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file","status":"published","published":"2021-12-30T22:15:10.363Z","modified":"2026-10-23T18:04:15.764109162Z","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":"2026-11-02T15:45:35.799676Z"},{"id":"OESA-2022-1610","title":"wireshark security update","description":"Wireshark allows you to examine protocol data stored in files or as it is captured from wired or wireless (WiFi or Bluetooth) networks, USB devices, and many other sources.  It supports dozens of protocol capture file formats and understands more than a thousand protocols.\r\n\r\n\r\n\r\nSecurity Fix(es):\r\n\r\nExcessive memory consumption in MS-WSP dissector in Wireshark 3.4.0 to 3.4.4 and 3.2.0 to 3.2.12 allows denial of service via packet injection or crafted capture file(CVE-2021-22207)\r\n\r\nImproper URL handling in Wireshark 3.4.0 to 3.4.3 and 3.2.0 to 3.2.11 could allow remote code execution via via packet injection or crafted capture file.(CVE-2021-22191)\r\n\r\nCrash in the Sysdig Event dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file(CVE-2021-4181)\r\n\r\nInfinite loop in the RTMPT dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file(CVE-2021-4185)","status":"published","published":"2022-04-12T11:04:53Z","modified":"2026-08-18T01:16:28.424077848Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:39.528805Z"},{"id":"UBUNTU-CVE-2021-4185","description":"Infinite loop in the RTMPT dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file","status":"published","published":"2021-12-30T22:15:00Z","modified":"2026-04-22T13:01:48.45671Z","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"},{"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":"2026-11-02T15:54:29.220315Z"},{"id":"CLSA-2026-1777312619","title":"wireshark: Fix of CVE-2021-4185","description":"- CVE-2021-4185: fix infinite loop in RTMPT dissector on TCP sequence wraparound","status":"published","published":"2026-04-27T17:57:03Z","modified":"2026-06-01T00:32:28.083346737Z","updated_at":"2026-11-02T15:43:44.384419Z"},{"id":"DLA-2967-1","title":"wireshark - security update","status":"published","published":"2022-03-31T00:00:00Z","modified":"2026-03-09T01:18:24.839743Z","updated_at":"2026-11-02T15:46:11.189256Z"},{"id":"DLA-3906-1","title":"wireshark - security update","status":"published","published":"2024-09-30T00:00:00Z","modified":"2026-03-09T02:11:11.067392Z","updated_at":"2026-11-02T15:46:12.203458Z"},{"id":"MGASA-2022-0004","title":"Updated wireshark packages fix security vulnerability","description":"Several wireshark vulnerabilities have been fixed. See the release notes\nfor details.\n","status":"published","published":"2022-01-03T07:36:40Z","modified":"2026-04-16T04:43:52.411897315Z","updated_at":"2026-11-02T15:49:41.849028Z"},{"id":"openSUSE-SU-2022:0375-1","title":"Security update for wireshark","description":"This update for wireshark fixes the following issues:\n\nUpdate to version 3.6.1: \n\n- CVE-2021-4185: RTMPT dissector infinite loop (bsc#1194166)\n- CVE-2021-4184: BitTorrent DHT dissector infinite loop (bsc#1194167)\n- CVE-2021-4183: pcapng file parser crash (bsc#1194168)\n- CVE-2021-4182: RFC 7468 file parser infinite loop (bsc#1194169)\n- CVE-2021-4181: Sysdig Event dissector crash (bsc#1194170)\n- CVE-2021-4190: Kafka dissector infinite loop (bsc#1194171)\n- Support for Shared Memory Communications (SMC) (jsc#SLE-18727)\n","status":"published","published":"2022-02-14T10:13:07Z","modified":"2026-02-04T03:10:45.819263Z","updated_at":"2026-11-02T16:58:32.653274Z"},{"id":"openSUSE-SU-2024:11703-1","title":"libwireshark15-3.6.1-1.1 on GA media","description":"These are all security issues fixed in the libwireshark15-3.6.1-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T02:59:49.54395Z","updated_at":"2026-11-02T16:58:35.195147Z"},{"id":"SUSE-SU-2022:0375-1","title":"Security update for wireshark","description":"This update for wireshark fixes the following issues:\n\nUpdate to version 3.6.1: \n\n- CVE-2021-4185: RTMPT dissector infinite loop (bsc#1194166)\n- CVE-2021-4184: BitTorrent DHT dissector infinite loop (bsc#1194167)\n- CVE-2021-4183: pcapng file parser crash (bsc#1194168)\n- CVE-2021-4182: RFC 7468 file parser infinite loop (bsc#1194169)\n- CVE-2021-4181: Sysdig Event dissector crash (bsc#1194170)\n- CVE-2021-4190: Kafka dissector infinite loop (bsc#1194171)\n- Support for Shared Memory Communications (SMC) (jsc#SLE-18727)\n","status":"published","published":"2022-02-14T10:14:21Z","modified":"2026-02-04T04:08:13.056822Z","updated_at":"2026-11-02T15:53:50.066806Z"},{"id":"USN-7552-1","title":"wireshark vulnerabilities","description":"It was discovered that Wireshark did not correctly handle recursion. If a\nuser or system were tricked into opening a specially crafted file, an\nattacker could possibly use this issue to cause a denial of service. This\nissue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS\nand Ubuntu 20.04 LTS. (CVE-2021-39929)\n\nRoman Donchenko discovered that Wireshark did not correctly handle\nparsing certain files. If a user or system were tricked into opening a\nspecially crafted file, an attacker could possibly use this issue to\ncause a denial of service. This issue only affected Ubuntu 20.04 LTS.\n(CVE-2021-4182)\n\nIt was discovered that Wireshark did not correctly handle parsing\ncertain files. If a user or system were tricked into opening a specially\ncrafted file, an attacker could possibly use this issue to cause a denial\nof service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS,\nUbuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2021-4185, CVE-2022-0581)\n\nIt was discovered that Wireshark did not correctly handle parsing\ncertain files. If a user or system were tricked into opening a specially\ncrafted file, an attacker could possibly use this issue to cause a denial\nof service. This issue only affected Ubuntu 20.04 LTS. (CVE-2021-4186)\n\nSharon Brizinov discovered that Wireshark did not correctly handle\nparsing certain files. If a user or system were tricked into opening a\nspecially crafted file, an attacker could possibly use this issue to\ncause a denial of service. This issue only affected Ubuntu 14.04 LTS,\nUbuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.\n(CVE-2022-0582, CVE-2022-0583, CVE-2022-0586)\n\nSharon Brizinov discovered that Wireshark did not correctly handle\nparsing certain files. If a user or system were tricked into opening a\nspecially crafted file, an attacker could possibly use this issue to\ncause a denial of service. This issue only affected Ubuntu 20.04 LTS.\n(CVE-2022-0585)\n\nJason Cohen discovered that Wireshark did not correctly handle parsing\ncertain files. If a user or system were tricked into opening a specially\ncrafted file, an attacker could possibly use this issue to cause a\ndenial of service. This issue only affected Ubuntu 22.04 LTS.\n(CVE-2022-3190)","status":"published","published":"2025-06-04T04:16:16Z","modified":"2026-06-25T13:32:30.587449817Z","updated_at":"2026-11-02T16:58:19.988474Z"}]}}