{"id":"UBUNTU-CVE-2023-37463","details":"cmark-gfm is an extended version of the C reference implementation of CommonMark, a rationalized version of Markdown syntax with a spec. Three polynomial time complexity issues in cmark-gfm may lead to unbounded resource exhaustion and subsequent denial of service. These vulnerabilities have been patched in 0.29.0.gfm.12.","modified":"2026-02-04T02:44:00.124332Z","published":"2023-07-13T20:15:00Z","withdrawn":"2025-06-23T15:56:53Z","related":["CVE-2023-37463"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-37463"},{"type":"REPORT","url":"https://github.com/github/cmark-gfm/security/advisories/GHSA-w4qg-3vf7-m9x5"},{"type":"REPORT","url":"https://github.com/github/cmark-gfm/releases/tag/0.29.0.gfm.12"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-37463"}],"affected":[{"package":{"name":"cmark-gfm","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/cmark-gfm@0.29.0.gfm.0-4?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.28.3.gfm.20-3","0.29.0.gfm.0-3","0.29.0.gfm.0-4"],"ecosystem_specific":{"ubuntu_priority":"medium"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-37463.json"}},{"package":{"name":"cmark-gfm","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/cmark-gfm@0.29.0.gfm.3-3?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.29.0.gfm.0-6","0.29.0.gfm.2-1","0.29.0.gfm.2-1+really.0.29.0.gfm.0ubuntu1","0.29.0.gfm.2-2","0.29.0.gfm.3-3"],"ecosystem_specific":{"ubuntu_priority":"medium"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-37463.json"}},{"package":{"name":"cmark-gfm","ecosystem":"Ubuntu:24.10","purl":"pkg:deb/ubuntu/cmark-gfm@0.29.0.gfm.6-6build1?arch=source&distro=oracular"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.29.0.gfm.6-6build1"],"ecosystem_specific":{"ubuntu_priority":"medium"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-37463.json"}},{"package":{"name":"cmark-gfm","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/cmark-gfm@0.29.0.gfm.6-6build1?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.29.0.gfm.6-6","0.29.0.gfm.6-6build1"],"ecosystem_specific":{"ubuntu_priority":"medium"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-37463.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"}]}