CVE-2023-24824

Quadratic complexity may lead to a denial of service in cmark-gfm

Published: Mar 31, 2023Updated: Nov 21, 2024 Sources: CVE List NVDCWE-400

5.3MEDIUM

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:NIntegrity

None

A:LAvailability

Low

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Weaknesses

CWE-400 CWE-407

Affected Products

github

commercial·US

cmark-gfm

DevTools & CI

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Impact

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References

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

github.com

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

github.com

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