CVE-2023-24824

high

Description

cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and rendering library and program in C. A polynomial time complexity issue in cmark-gfm may lead to unbounded resource exhaustion and subsequent denial of service. This CVE covers quadratic complexity issues when parsing text which leads with either large numbers of `>` or `-` characters. This issue has been addressed in version 0.29.0.gfm.10. Users are advised to upgrade. Users unable to upgrade should validate that their input comes from trusted sources.

References

https://github.com/github/cmark-gfm/commit/2300c1bd2c8226108885bf019655c4159cf26b59

https://github.com/github/cmark-gfm/security/advisories/GHSA-66g8-4hjf-77xh

Details

Source: Mitre, NVD

Published: 2023-03-31

CVSS v3

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity: High