{"id":"UBUNTU-CVE-2021-4185","details":"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","modified":"2026-01-30T00:40:10.864109Z","published":"2021-12-30T22:15:00Z","related":["USN-7552-1"],"upstream":["CVE-2021-4185"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-4185"},{"type":"REPORT","url":"https://www.wireshark.org/security/wnpa-sec-2021-17.html"},{"type":"REPORT","url":"https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4185.json"},{"type":"REPORT","url":"https://gitlab.com/wireshark/wireshark/-/issues/17745"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-4185"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7552-1"}],"affected":[{"package":{"name":"wireshark","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/wireshark@2.6.10-1~ubuntu14.04.0~esm3?arch=source&distro=esm-infra-legacy/trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.10-1~ubuntu14.04.0~esm3"}]}],"versions":["1.10.2-1","1.10.3-1","1.10.5-1ubuntu1","1.10.5-2","1.10.6-1","1.12.1+g01b65bf-4+deb8u11ubuntu0.14.04.1","2.6.3-1~ubuntu14.04.1","2.6.4-2~ubuntu14.04.1","2.6.5-1~ubuntu14.04.1","2.6.6-1~ubuntu14.04.0","2.6.8-1~ubuntu14.04.0~esm1","2.6.10-1~ubuntu14.04.0~esm1","2.6.10-1~ubuntu14.04.0~esm2"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro","binaries":[{"binary_version":"2.6.10-1~ubuntu14.04.0~esm3","binary_name":"libwireshark-data"},{"binary_version":"2.6.10-1~ubuntu14.04.0~esm3","binary_name":"libwireshark-dev"},{"binary_version":"2.6.10-1~ubuntu14.04.0~esm3","binary_name":"libwireshark11"},{"binary_version":"2.6.10-1~ubuntu14.04.0~esm3","binary_name":"libwiretap-dev"},{"binary_version":"2.6.10-1~ubuntu14.04.0~esm3","binary_name":"libwiretap8"},{"binary_version":"2.6.10-1~ubuntu14.04.0~esm3","binary_name":"libwscodecs2"},{"binary_version":"2.6.10-1~ubuntu14.04.0~esm3","binary_name":"libwsutil-dev"},{"binary_version":"2.6.10-1~ubuntu14.04.0~esm3","binary_name":"libwsutil9"},{"binary_version":"2.6.10-1~ubuntu14.04.0~esm3","binary_name":"tshark"},{"binary_version":"2.6.10-1~ubuntu14.04.0~esm3","binary_name":"wireshark"},{"binary_version":"2.6.10-1~ubuntu14.04.0~esm3","binary_name":"wireshark-common"},{"binary_version":"2.6.10-1~ubuntu14.04.0~esm3","binary_name":"wireshark-dev"},{"binary_version":"2.6.10-1~ubuntu14.04.0~esm3","binary_name":"wireshark-gtk"},{"binary_version":"2.6.10-1~ubuntu14.04.0~esm3","binary_name":"wireshark-qt"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-4185.json"}},{"package":{"name":"wireshark","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/wireshark@2.6.10-1~ubuntu16.04.0+esm2?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.10-1~ubuntu16.04.0+esm2"}]}],"versions":["1.12.7+g7fc8978-1","1.12.8+g5b6e543-2","2.0.1+g59ea380-3build1","2.0.2+ga16e22e-1","2.2.6+g32dac6a-2ubuntu0.16.04","2.6.3-1~ubuntu16.04.1","2.6.4-2~ubuntu16.04.0","2.6.5-1~ubuntu16.04.0","2.6.6-1~ubuntu16.04.0","2.6.8-1~ubuntu16.04.0","2.6.10-1~ubuntu16.04.0","2.6.10-1~ubuntu16.04.0+esm1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_version":"2.6.10-1~ubuntu16.04.0+esm2","binary_name":"libwireshark-data"},{"binary_version":"2.6.10-1~ubuntu16.04.0+esm2","binary_name":"libwireshark-dev"},{"binary_version":"2.6.10-1~ubuntu16.04.0+esm2","binary_name":"libwireshark11"},{"binary_version":"2.6.10-1~ubuntu16.04.0+esm2","binary_name":"libwiretap-dev"},{"binary_version":"2.6.10-1~ubuntu16.04.0+esm2","binary_name":"libwiretap8"},{"binary_version":"2.6.10-1~ubuntu16.04.0+esm2","binary_name":"libwscodecs2"},{"binary_version":"2.6.10-1~ubuntu16.04.0+esm2","binary_name":"libwsutil-dev"},{"binary_version":"2.6.10-1~ubuntu16.04.0+esm2","binary_name":"libwsutil9"},{"binary_version":"2.6.10-1~ubuntu16.04.0+esm2","binary_name":"tshark"},{"binary_version":"2.6.10-1~ubuntu16.04.0+esm2","binary_name":"wireshark"},{"binary_version":"2.6.10-1~ubuntu16.04.0+esm2","binary_name":"wireshark-common"},{"binary_version":"2.6.10-1~ubuntu16.04.0+esm2","binary_name":"wireshark-dev"},{"binary_version":"2.6.10-1~ubuntu16.04.0+esm2","binary_name":"wireshark-gtk"},{"binary_version":"2.6.10-1~ubuntu16.04.0+esm2","binary_name":"wireshark-qt"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-4185.json"}},{"package":{"name":"wireshark","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/wireshark@2.6.10-1~ubuntu18.04.0+esm2?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.10-1~ubuntu18.04.0+esm2"}]}],"versions":["2.4.2-1","2.4.3-1","2.4.4-1","2.4.5-1","2.6.3-1~ubuntu18.04.1","2.6.4-2~ubuntu18.04.0","2.6.5-1~ubuntu18.04.0","2.6.6-1~ubuntu18.04.0","2.6.8-1~ubuntu18.04.0","2.6.10-1~ubuntu18.04.0","2.6.10-1~ubuntu18.04.0+esm1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_version":"2.6.10-1~ubuntu18.04.0+esm2","binary_name":"libwireshark-data"},{"binary_version":"2.6.10-1~ubuntu18.04.0+esm2","binary_name":"libwireshark-dev"},{"binary_version":"2.6.10-1~ubuntu18.04.0+esm2","binary_name":"libwireshark11"},{"binary_version":"2.6.10-1~ubuntu18.04.0+esm2","binary_name":"libwiretap-dev"},{"binary_version":"2.6.10-1~ubuntu18.04.0+esm2","binary_name":"libwiretap8"},{"binary_version":"2.6.10-1~ubuntu18.04.0+esm2","binary_name":"libwscodecs2"},{"binary_version":"2.6.10-1~ubuntu18.04.0+esm2","binary_name":"libwsutil-dev"},{"binary_version":"2.6.10-1~ubuntu18.04.0+esm2","binary_name":"libwsutil9"},{"binary_version":"2.6.10-1~ubuntu18.04.0+esm2","binary_name":"tshark"},{"binary_version":"2.6.10-1~ubuntu18.04.0+esm2","binary_name":"wireshark"},{"binary_version":"2.6.10-1~ubuntu18.04.0+esm2","binary_name":"wireshark-common"},{"binary_version":"2.6.10-1~ubuntu18.04.0+esm2","binary_name":"wireshark-dev"},{"binary_version":"2.6.10-1~ubuntu18.04.0+esm2","binary_name":"wireshark-gtk"},{"binary_version":"2.6.10-1~ubuntu18.04.0+esm2","binary_name":"wireshark-qt"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-4185.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}