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.
History

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2022-09-15T00:00:00

Updated: 2024-08-03T12:00:42.513Z

Reserved: 2022-09-02T00:00:00

Link: CVE-2022-39209

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2022-09-15T18:15:12.260

Modified: 2023-11-07T03:50:21.370

Link: CVE-2022-39209

cve-icon Redhat

Severity : Moderate

Publid Date: 2022-09-15T00:00:00Z

Links: CVE-2022-39209 - Bugzilla