{"id":"UBUNTU-CVE-2023-20197","details":"A vulnerability in the filesystem image parser for Hierarchical File System Plus (HFS+) of ClamAV could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.   This vulnerability is due to an incorrect check for completion when a file is decompressed, which may result in a loop condition that could cause the affected software to stop responding. An attacker could exploit this vulnerability by submitting a crafted HFS+ filesystem image to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to cause the ClamAV scanning process to stop responding, resulting in a DoS condition on the affected software and consuming available system resources.   For a description of this vulnerability, see the ClamAV blog .","modified":"2026-04-22T14:01:03.024488Z","published":"2023-08-17T00:00:00Z","related":["USN-6303-1","USN-6303-2"],"upstream":["CVE-2023-20197"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-20197"},{"type":"REPORT","url":"https://blog.clamav.net/2023/07/2023-08-16-releases.html"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6303-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6303-2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-20197"}],"affected":[{"package":{"name":"clamav","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/clamav@0.103.9+dfsg-0ubuntu0.14.04.1+esm1?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.103.9+dfsg-0ubuntu0.14.04.1+esm1"}]}],"versions":["0.97.8+dfsg-1ubuntu4","0.97.8+dfsg-1ubuntu5","0.98.1+dfsg-1ubuntu4","0.98.1+dfsg-1ubuntu5","0.98.1+dfsg-2ubuntu2","0.98.1+dfsg-4ubuntu1","0.98.1+dfsg-4ubuntu1.1","0.98.5+addedllvm-0ubuntu0.14.04.1","0.98.6+dfsg-0ubuntu0.14.04.1","0.98.7+dfsg-0ubuntu0.14.04.1","0.99.2+addedllvm-0ubuntu0.14.04.1","0.99.2+addedllvm-0ubuntu0.14.04.2","0.99.3+addedllvm-0ubuntu0.14.04.1","0.99.4+addedllvm-0ubuntu0.14.04.1","0.100.1+dfsg-1ubuntu0.14.04.1","0.100.1+dfsg-1ubuntu0.14.04.2","0.100.1+dfsg-1ubuntu0.14.04.3","0.100.1+dfsg-1ubuntu0.14.04.4","0.100.2+dfsg-1ubuntu0.14.04.1","0.100.2+dfsg-1ubuntu0.14.04.2","0.100.3+dfsg-0ubuntu0.14.04.1","0.100.3+dfsg-0ubuntu0.14.04.1+esm1","0.101.4+dfsg-0ubuntu0.14.04.1+esm1","0.102.1+dfsg-0ubuntu0.14.04.1+esm1","0.102.2+dfsg-0ubuntu0.14.04.1+esm1","0.102.3+dfsg-0ubuntu0.14.04.1+esm1","0.102.4+dfsg-0ubuntu0.14.04.1+esm1","0.103.2+dfsg-0ubuntu0.14.04.1+esm1","0.103.2+dfsg-0ubuntu0.14.04.1+esm2","0.103.5+dfsg-0ubuntu0.14.04.1+esm1","0.103.6+dfsg-0ubuntu0.14.04.1+esm1","0.103.8+dfsg-0ubuntu0.14.04.1+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"clamav","binary_version":"0.103.9+dfsg-0ubuntu0.14.04.1+esm1"},{"binary_name":"clamav-base","binary_version":"0.103.9+dfsg-0ubuntu0.14.04.1+esm1"},{"binary_name":"clamav-daemon","binary_version":"0.103.9+dfsg-0ubuntu0.14.04.1+esm1"},{"binary_name":"clamav-docs","binary_version":"0.103.9+dfsg-0ubuntu0.14.04.1+esm1"},{"binary_name":"clamav-freshclam","binary_version":"0.103.9+dfsg-0ubuntu0.14.04.1+esm1"},{"binary_name":"clamav-milter","binary_version":"0.103.9+dfsg-0ubuntu0.14.04.1+esm1"},{"binary_name":"clamav-testfiles","binary_version":"0.103.9+dfsg-0ubuntu0.14.04.1+esm1"},{"binary_name":"libclamav9","binary_version":"0.103.9+dfsg-0ubuntu0.14.04.1+esm1"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-20197.json"}},{"package":{"name":"clamav","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/clamav@0.103.9+dfsg-0ubuntu0.16.04.1+esm1?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.103.9+dfsg-0ubuntu0.16.04.1+esm1"}]}],"versions":["0.98.7+dfsg-0ubuntu4","0.98.7+dfsg-0ubuntu5","0.99+dfsg-1ubuntu1","0.99+dfsg-1ubuntu1.1","0.99+dfsg-1ubuntu1.2","0.99.2+dfsg-0ubuntu0.16.04.1","0.99.2+dfsg-0ubuntu0.16.04.2","0.99.2+dfsg-0ubuntu0.16.04.3","0.99.3+addedllvm-0ubuntu0.16.04.1","0.99.4+addedllvm-0ubuntu0.16.04.1","0.100.1+dfsg-1ubuntu0.16.04.1","0.100.1+dfsg-1ubuntu0.16.04.2","0.100.1+dfsg-1ubuntu0.16.04.3","0.100.2+dfsg-1ubuntu0.16.04.1","0.100.3+dfsg-0ubuntu0.16.04.1","0.101.4+dfsg-0ubuntu0.16.04.1","0.102.1+dfsg-0ubuntu0.16.04.2","0.102.2+dfsg-0ubuntu0.16.04.1","0.102.3+dfsg-0ubuntu0.16.04.1","0.102.4+dfsg-0ubuntu0.16.04.1","0.103.2+dfsg-0ubuntu0.16.04.1","0.103.2+dfsg-0ubuntu0.16.04.1+esm1","0.103.5+dfsg-0ubuntu0.16.04.1+esm1","0.103.6+dfsg-0ubuntu0.16.04.1+esm1","0.103.8+dfsg-0ubuntu0.16.04.1+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"clamav","binary_version":"0.103.9+dfsg-0ubuntu0.16.04.1+esm1"},{"binary_name":"clamav-base","binary_version":"0.103.9+dfsg-0ubuntu0.16.04.1+esm1"},{"binary_name":"clamav-daemon","binary_version":"0.103.9+dfsg-0ubuntu0.16.04.1+esm1"},{"binary_name":"clamav-docs","binary_version":"0.103.9+dfsg-0ubuntu0.16.04.1+esm1"},{"binary_name":"clamav-freshclam","binary_version":"0.103.9+dfsg-0ubuntu0.16.04.1+esm1"},{"binary_name":"clamav-milter","binary_version":"0.103.9+dfsg-0ubuntu0.16.04.1+esm1"},{"binary_name":"clamav-testfiles","binary_version":"0.103.9+dfsg-0ubuntu0.16.04.1+esm1"},{"binary_name":"clamdscan","binary_version":"0.103.9+dfsg-0ubuntu0.16.04.1+esm1"},{"binary_name":"libclamav9","binary_version":"0.103.9+dfsg-0ubuntu0.16.04.1+esm1"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-20197.json"}},{"package":{"name":"clamav","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/clamav@0.103.9+dfsg-0ubuntu0.18.04.1+esm1?arch=source&distro=esm-infra/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.103.9+dfsg-0ubuntu0.18.04.1+esm1"}]}],"versions":["0.99.2+dfsg-6ubuntu2","0.99.3~beta1+dfsg-2ubuntu1","0.99.3~beta1+dfsg-2ubuntu2","0.99.3+addedllvm-0ubuntu1","0.99.3+addedllvm-0ubuntu2","0.99.4+addedllvm-0ubuntu1","0.100.1+dfsg-1ubuntu0.18.04.1","0.100.1+dfsg-1ubuntu0.18.04.2","0.100.1+dfsg-1ubuntu0.18.04.3","0.100.2+dfsg-1ubuntu0.18.04.1","0.100.3+dfsg-0ubuntu0.18.04.1","0.101.4+dfsg-0ubuntu0.18.04.1","0.102.1+dfsg-0ubuntu0.18.04.2","0.102.2+dfsg-0ubuntu0.18.04.1","0.102.3+dfsg-0ubuntu0.18.04.1","0.102.4+dfsg-0ubuntu0.18.04.1","0.103.2+dfsg-0ubuntu0.18.04.1","0.103.2+dfsg-0ubuntu0.18.04.2","0.103.2+dfsg-0ubuntu0.18.04.3","0.103.5+dfsg-0ubuntu0.18.04.1","0.103.6+dfsg-0ubuntu0.18.04.1","0.103.8+dfsg-0ubuntu0.18.04.1"],"ecosystem_specific":{"binaries":[{"binary_name":"clamav","binary_version":"0.103.9+dfsg-0ubuntu0.18.04.1+esm1"},{"binary_name":"clamav-base","binary_version":"0.103.9+dfsg-0ubuntu0.18.04.1+esm1"},{"binary_name":"clamav-daemon","binary_version":"0.103.9+dfsg-0ubuntu0.18.04.1+esm1"},{"binary_name":"clamav-docs","binary_version":"0.103.9+dfsg-0ubuntu0.18.04.1+esm1"},{"binary_name":"clamav-freshclam","binary_version":"0.103.9+dfsg-0ubuntu0.18.04.1+esm1"},{"binary_name":"clamav-milter","binary_version":"0.103.9+dfsg-0ubuntu0.18.04.1+esm1"},{"binary_name":"clamav-testfiles","binary_version":"0.103.9+dfsg-0ubuntu0.18.04.1+esm1"},{"binary_name":"clamdscan","binary_version":"0.103.9+dfsg-0ubuntu0.18.04.1+esm1"},{"binary_name":"libclamav9","binary_version":"0.103.9+dfsg-0ubuntu0.18.04.1+esm1"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-20197.json"}},{"package":{"name":"clamav","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/clamav@0.103.9+dfsg-0ubuntu0.20.04.1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.103.9+dfsg-0ubuntu0.20.04.1"}]}],"versions":["0.101.4+dfsg-1ubuntu1","0.102.1+dfsg-1ubuntu1","0.102.1+dfsg-2ubuntu1","0.102.1+dfsg-2ubuntu2","0.102.2+dfsg-1ubuntu1","0.102.2+dfsg-2ubuntu1","0.102.3+dfsg-0ubuntu0.20.04.1","0.102.4+dfsg-0ubuntu0.20.04.1","0.103.2+dfsg-0ubuntu0.20.04.1","0.103.2+dfsg-0ubuntu0.20.04.2","0.103.5+dfsg-1~20.04.1","0.103.6+dfsg-0ubuntu0.20.04.1","0.103.8+dfsg-0ubuntu0.20.04.1"],"ecosystem_specific":{"binaries":[{"binary_name":"clamav","binary_version":"0.103.9+dfsg-0ubuntu0.20.04.1"},{"binary_name":"clamav-base","binary_version":"0.103.9+dfsg-0ubuntu0.20.04.1"},{"binary_name":"clamav-daemon","binary_version":"0.103.9+dfsg-0ubuntu0.20.04.1"},{"binary_name":"clamav-docs","binary_version":"0.103.9+dfsg-0ubuntu0.20.04.1"},{"binary_name":"clamav-freshclam","binary_version":"0.103.9+dfsg-0ubuntu0.20.04.1"},{"binary_name":"clamav-milter","binary_version":"0.103.9+dfsg-0ubuntu0.20.04.1"},{"binary_name":"clamav-testfiles","binary_version":"0.103.9+dfsg-0ubuntu0.20.04.1"},{"binary_name":"clamdscan","binary_version":"0.103.9+dfsg-0ubuntu0.20.04.1"},{"binary_name":"libclamav9","binary_version":"0.103.9+dfsg-0ubuntu0.20.04.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-20197.json"}},{"package":{"name":"clamav","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/clamav@0.103.9+dfsg-0ubuntu0.22.04.1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.103.9+dfsg-0ubuntu0.22.04.1"}]}],"versions":["0.103.3+dfsg-1","0.103.4+dfsg-1","0.103.4+dfsg-1build1","0.103.5+dfsg-1","0.103.6+dfsg-0ubuntu0.22.04.1","0.103.8+dfsg-0ubuntu0.22.04.1"],"ecosystem_specific":{"binaries":[{"binary_name":"clamav","binary_version":"0.103.9+dfsg-0ubuntu0.22.04.1"},{"binary_name":"clamav-base","binary_version":"0.103.9+dfsg-0ubuntu0.22.04.1"},{"binary_name":"clamav-daemon","binary_version":"0.103.9+dfsg-0ubuntu0.22.04.1"},{"binary_name":"clamav-docs","binary_version":"0.103.9+dfsg-0ubuntu0.22.04.1"},{"binary_name":"clamav-freshclam","binary_version":"0.103.9+dfsg-0ubuntu0.22.04.1"},{"binary_name":"clamav-milter","binary_version":"0.103.9+dfsg-0ubuntu0.22.04.1"},{"binary_name":"clamav-testfiles","binary_version":"0.103.9+dfsg-0ubuntu0.22.04.1"},{"binary_name":"clamdscan","binary_version":"0.103.9+dfsg-0ubuntu0.22.04.1"},{"binary_name":"libclamav9","binary_version":"0.103.9+dfsg-0ubuntu0.22.04.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-20197.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"},{"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"}]}