High severity · published Jan 23, 2023
CVE-2023-22484
Inefficient Quadratic complexity bug in handle_pointy_brace may lead to a denial of service
7.5
CVSS
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 a polynomial time complexity issue in cmark-gfm that may lead to unbounded resource exhaustion and subsequent denial of service. This vulnerability has been patched in 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)1.0% · higher than 61% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CM
cmark-gfm · github
< 0.29.0.gfm.7 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-22484
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-22484
Exploit
https://github.com/github/cmark-gfm/security/advisories/GHSA-24f7-9frr-5h2r
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