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

CVE-2023-22486

7.5HIGH

Key Information

Vendor
github
Status
cmark-gfm
Vendor
CVE Published:
26 January 2023

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 contain a polynomial time complexity issue in handle_close_bracket that may lead to unbounded resource exhaustion and subsequent denial of service. This vulnerability has been patched in 0.29.0.gfm.7.

Affected Version(s)

cmark-gfm = < 0.29.0.gfm.7

Refferences

https://github.com/github/cmark-gfm/security/advisories/G...
x_refsource_CONFIRM

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Collectors

NVD DatabaseMitre Database
.