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

5.3MEDIUM

Key Information:

Vendor

Github
Status
Cmark-gfm
Vendor
CVE Published:
31 March 2023

What is CVE-2023-24824?

The cmark-gfm library, a variant of the C CommonMark parsing and rendering tool, contains a vulnerability that can result in unbounded resource exhaustion. This occurs when processing inputs with a high density of specific characters, such as consecutive > or -, leading to potential denial of service. To mitigate risks, users should upgrade to version 0.29.0.gfm.10 or later. If upgrading is not feasible, it is crucial to ensure that input data is sourced from trusted entities to avoid exploitation.

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Affected Version(s)

cmark-gfm < 0.29.0.gfm.10

References

https://github.com/github/cmark-gfm/security/advisories/G...
x_refsource_CONFIRM
https://github.com/github/cmark-gfm/commit/2300c1bd2c8226...
x_refsource_MISC

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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