CVE-2022-39209
Vulnerability from cvelistv5
Published
2022-09-15 00:00
Modified
2024-08-03 12:00
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and rendering library and program in C. In versions prior to 0.29.0.gfm.6 a polynomial time complexity issue in cmark-gfm's autolink extension may lead to unbounded resource exhaustion and subsequent denial of service. Users may verify the patch by running `python3 -c 'print("![l"* 100000 + "\n")' | ./cmark-gfm -e autolink`, which will resource exhaust on unpatched cmark-gfm but render correctly on patched cmark-gfm. This vulnerability has been patched in 0.29.0.gfm.6. Users are advised to upgrade. Users unable to upgrade should disable the use of the autolink extension.
References
security-advisories@github.comhttps://en.wikipedia.org/wiki/Time_complexityThird Party Advisory
security-advisories@github.comhttps://github.com/github/cmark-gfm/commit/9d57d8a23142b316282bdfc954cb0ecda40a8655Patch, Third Party Advisory
security-advisories@github.comhttps://github.com/github/cmark-gfm/security/advisories/GHSA-cgh3-p57x-9q7qThird Party Advisory
security-advisories@github.comhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JIUCZN3PEKUCT2JQYQTYOVIJG2KSD6G7/
security-advisories@github.comhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JMGP65NANDVKPDMXMKYO2ZV2H2HZJY4P/
security-advisories@github.comhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UEAAAI4OULDYQ2TA3HOXH54PC3DCBFZS/
af854a3a-2127-422b-91ae-364da2661108https://en.wikipedia.org/wiki/Time_complexityThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/github/cmark-gfm/commit/9d57d8a23142b316282bdfc954cb0ecda40a8655Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/github/cmark-gfm/security/advisories/GHSA-cgh3-p57x-9q7qThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JIUCZN3PEKUCT2JQYQTYOVIJG2KSD6G7/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JMGP65NANDVKPDMXMKYO2ZV2H2HZJY4P/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UEAAAI4OULDYQ2TA3HOXH54PC3DCBFZS/
Impacted products
Vendor Product Version
github cmark-gfm Version: < 0.29.0.gfm.6
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