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.
Published 2023-01-23 23:15:10
Updated 2023-02-02 14:14:12
Source GitHub, Inc.
View at NVD,   CVE.org
Vulnerability category: Denial of service

Exploit prediction scoring system (EPSS) score for CVE-2023-22483

Probability of exploitation activity in the next 30 days: 0.07%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 30 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2023-22483

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source
7.5
HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.9
3.6
NIST
3.5
LOW CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
2.1
1.4
GitHub, Inc.

CWE ids for CVE-2023-22483

  • The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.
    Assigned by: security-advisories@github.com (Secondary)
  • An algorithm in a product has an inefficient worst-case computational complexity that may be detrimental to system performance and can be triggered by an attacker, typically using crafted manipulations that ensure that the worst case is being reached.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2023-22483

Products affected by CVE-2023-22483

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