High severity · published Jan 23, 2023
CVE-2023-22483
cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and rendering library and program in C
7.5
CVSS
1.1%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 65% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CM
Cmark-gfm · Github
before 0.29.0.gfm.7 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-22483
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-22483
Exploit
https://github.com/github/cmark-gfm/security/advisories/GHSA-29g3-96g3-jg6c
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