{"id":"CVE-2023-22485","state":"PUBLISHED","title":"cmark-gfm out-of-bounds read in validate_protocol","description":"cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and rendering library and program in C. In versions prior 0.29.0.gfm.7, a crafted markdown document can trigger an out-of-bounds read in the `validate_protocol` function. We believe this bug is harmless in practice, because the out-of-bounds read accesses `malloc` metadata without causing any visible damage.This vulnerability has been patched in 0.29.0.gfm.7.","publishedAt":"2023-01-24T00:26:57.671Z","updatedAt":"2025-03-10T21:20:51.304Z","severity":{"score":5.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["github cmark-gfm"],"affected":[{"vendor":"github","product":"cmark-gfm","versions":[{"version":"< 0.29.0.gfm.7","status":"affected"}]}],"references":["https://github.com/github/cmark-gfm/security/advisories/GHSA-c944-cv5f-hpvr"],"weaknesses":["CWE-125"],"ingestedAt":"2026-10-29T20:05:43.909Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/22xxx/CVE-2023-22485.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2023-22485","state":"PUBLISHED","datePublished":"2023-01-24T00:26:57.671Z","dateUpdated":"2025-03-10T21:20:51.304Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2022-12-29T17:41:28.088Z"},"containers":{"cna":{"title":"cmark-gfm out-of-bounds read in validate_protocol","descriptions":[{"lang":"en","value":"cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and rendering library and program in C. In versions prior 0.29.0.gfm.7, a crafted markdown document can trigger an out-of-bounds read in the `validate_protocol` function. We believe this bug is harmless in practice, because the out-of-bounds read accesses `malloc` metadata without causing any visible damage.This vulnerability has been patched in 0.29.0.gfm.7."}],"affected":[{"vendor":"github","product":"cmark-gfm","versions":[{"version":"< 0.29.0.gfm.7","status":"affected"}]}],"references":[{"url":"https://github.com/github/cmark-gfm/security/advisories/GHSA-c944-cv5f-hpvr","name":"https://github.com/github/cmark-gfm/security/advisories/GHSA-c944-cv5f-hpvr","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-125","lang":"en","description":"CWE-125: Out-of-bounds Read","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2023-01-24T00:26:57.671Z"},"source":{"advisory":"GHSA-c944-cv5f-hpvr","discovery":"UNKNOWN"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://github.com/github/cmark-gfm/security/advisories/GHSA-c944-cv5f-hpvr","name":"https://github.com/github/cmark-gfm/security/advisories/GHSA-c944-cv5f-hpvr","tags":["x_refsource_CONFIRM","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T10:13:48.514Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-03-10T21:02:09.252840Z","id":"CVE-2023-22485","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-03-10T21:20:51.304Z"}}]}}}