Vulnerabilities > CVE-2023-22483 - Algorithmic Complexity vulnerability in Github Cmark-Gfm

CVSS 7.5 - HIGH

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

NONE

Integrity impact

NONE

Availability impact

HIGH

network

low complexity

github

CWE-407

NVD

Published: 2023-01-23

Updated: 2023-11-07

Summary

cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and rendering library and program in C. Versions prior to 0.29.0.gfm.7 are subject to several polynomial time complexity issues in cmark-gfm that may lead to unbounded resource exhaustion and subsequent denial of service. Various commands, when piped to cmark-gfm with large values, cause the running time to increase quadratically. These vulnerabilities have been patched in version 0.29.0.gfm.7.

Vulnerable Configurations

Part	Description	Count
Application	Github Github Cmark GFM - Github Cmark GFM 0.27.1.Gfm.0 Github Cmark GFM 0.27.1.Gfm.1 Github Cmark GFM 0.27.1.Gfm.2 Github Cmark GFM 0.27.1.Gfm.3 Github Cmark GFM 0.27.1.Gfm.4 Github Cmark GFM 0.28.0.Gfm.5 Github Cmark GFM 0.28.0.Gfm.6 Github Cmark GFM 0.28.0.Gfm.7 Github Cmark GFM 0.28.0.Gfm.8 Github Cmark GFM 0.28.0.Gfm.9 Github Cmark GFM 0.28.0.Gfm.10 Github Cmark GFM 0.28.0.Gfm.11 Github Cmark GFM 0.28.3.Gfm.12 Github Cmark GFM 0.28.3.Gfm.13 Github Cmark GFM 0.28.3.Gfm.14 Github Cmark GFM 0.28.3.Gfm.15 Github Cmark GFM 0.28.3.Gfm.16 Github Cmark GFM 0.28.3.Gfm.17 Github Cmark GFM 0.28.3.Gfm.18 Github Cmark GFM 0.28.3.Gfm.19 Github Cmark GFM 0.28.3.Gfm.20 Github Cmark GFM 0.28.3.Gfm.21 Github Cmark GFM 0.29.0.Gfm.0 Github Cmark GFM 0.29.0.Gfm.1 Github Cmark GFM 0.29.0.Gfm.2 Github Cmark GFM 0.29.0.Gfm.3 Github Cmark GFM 0.29.0.Gfm.4 Github Cmark GFM 0.29.0.Gfm.5 Github Cmark GFM 0.29.0.Gfm.6	30

Common Weakness Enumeration (CWE)

CWE-407 - Algorithmic Complexity

References

https://github.com/github/cmark-gfm/security/advisories/GHSA-29g3-96g3-jg6c