{"id":"CVE-2022-20770","details":"On April 20, 2022, the following vulnerability in the ClamAV scanning library versions 0.103.5 and earlier and 0.104.2 and earlier was disclosed: A vulnerability in CHM file parser of Clam AntiVirus (ClamAV) versions 0.104.0 through 0.104.2 and LTS version 0.103.5 and prior versions could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. For a description of this vulnerability, see the ClamAV blog. This advisory will be updated as additional information becomes available.","modified":"2026-03-20T11:50:08.888594Z","published":"2022-05-04T17:15:08.377Z","related":["MGASA-2022-0187","SUSE-SU-2022:1644-1","SUSE-SU-2022:1647-1","openSUSE-SU-2024:12047-1"],"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N4NNBIJVG6Z4PDIKUZXTYXICYUAYAZ56/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7RV6BLIATIJE74SQ6NG5ZC4JK5MMDQ2R/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BX5ZXNHP4NFYQ5BFSKY3WT7NTBZUYG7L/"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202310-01"},{"type":"ADVISORY","url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-dos-prVGcHLd"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2022/06/msg00004.html"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/cisco-talos/clamav","events":[{"introduced":"0"},{"last_affected":"5faab1937cc2b89049ef7748dc9a10545707613d"},{"introduced":"ba51bf8e644921a1592d2f3d280a2daa924acfd8"},{"last_affected":"fb828e93cab6b73818c1d94ffd05d92720a85c6f"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"0.103.5"},{"introduced":"0.104.0"},{"last_affected":"0.104.2"}]}}],"versions":["clamav-0.104.0","clamav-0.104.1","clamav-0.104.2"],"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"1.16.3"}]},{"events":[{"introduced":"0"},{"fixed":"1.17.2"}]},{"events":[{"introduced":"0"},{"fixed":"7.5.5"}]},{"events":[{"introduced":"1.18.0"},{"fixed":"1.18.2"}]},{"events":[{"introduced":"1.18.0"},{"fixed":"1.18.2"}]},{"events":[{"introduced":"0"},{"last_affected":"34"}]},{"events":[{"introduced":"0"},{"last_affected":"35"}]},{"events":[{"introduced":"0"},{"last_affected":"36"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]}],"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-20770.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}