{"id":"UBUNTU-CVE-2023-39976","details":"log_blackbox.c in libqb before 2.0.8 allows a buffer overflow via long log messages because the header size is not considered.","modified":"2026-04-22T14:11:32.034180Z","published":"2023-08-08T06:15:00Z","related":["USN-6308-1"],"upstream":["CVE-2023-39976"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-39976"},{"type":"REPORT","url":"https://github.com/ClusterLabs/libqb/pull/490"},{"type":"REPORT","url":"https://github.com/ClusterLabs/libqb/commit/1bbaa929b77113532785c408dd1b41cd0521ffc8"},{"type":"REPORT","url":"https://github.com/ClusterLabs/libqb/compare/v2.0.7...v2.0.8"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6308-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-39976"}],"affected":[{"package":{"name":"libqb","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/libqb@2.0.4-1ubuntu0.2?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.4-1ubuntu0.2"}]}],"versions":["2.0.3-1build1","2.0.4-1","2.0.4-1build1","2.0.4-1ubuntu0.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"doxygen2man","binary_version":"2.0.4-1ubuntu0.2"},{"binary_name":"libqb-tools","binary_version":"2.0.4-1ubuntu0.2"},{"binary_name":"libqb100","binary_version":"2.0.4-1ubuntu0.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-39976.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:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}