CVE-2023-24824 Quadratic complexity may lead to a denial of service in cmark-gfm

2023-03-3122:01:18

CWE-400

CWE-407

GitHub_M

www.cve.org

cve-2023-24824

denial of service

cmark-gfm

parsing complexity

github's fork

commonmark

resource exhaustion

unbounded

upgrade

trusted sources

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

0.001 Low

EPSS

Percentile

35.0%

JSON

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.

CNA Affected

[
  {
    "vendor": "github",
    "product": "cmark-gfm",
    "versions": [
      {
        "version": "< 0.29.0.gfm.10",
        "status": "affected"
      }
    ]
  }
]