CVE-2023-22483

Publication date 23 January 2023

Last updated 4 March 2025

Ubuntu priority

Cvss 3 Severity Score

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.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
cmark-gfm	24.10 oracular	Fixed 0.29.0.gfm.6-6ubuntu0.24.10.1
	24.04 LTS noble	Fixed 0.29.0.gfm.6-6ubuntu0.24.04.1~esm1 Ubuntu Pro
	23.10 mantic	Ignored end of life, was needs-triage
	23.04 lunar	Ignored end of life, was needs-triage
	22.10 kinetic	Ignored end of life, was needs-triage
	22.04 LTS jammy	Fixed 0.29.0.gfm.3-3ubuntu0.1~esm1 Ubuntu Pro
	20.04 LTS focal	Vulnerable
	18.04 LTS bionic	Not in release
	16.04 LTS xenial	Ignored end of standard support
	14.04 LTS trusty	Ignored end of standard support

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
cmark-gfm	Upstream: 62be38f

Severity score breakdown

Parameter	Value
Base score	7.5 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-7319-1
cmark-gfm vulnerabilities
3 March 2025