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Comrak vulnerable to quadratic runtime issues when parsing Markdown (GHSL-2023-047)

Moderate severity GitHub Reviewed Published Mar 28, 2023 in kivikakk/comrak • Updated May 1, 2023

Package

cargo comrak (Rust)

Affected versions

< 0.17.0

Patched versions

0.17.0

Description

Impact

A range of quadratic parsing issues from cmark/cmark-gfm are also present in Comrak. These can be used to craft denial-of-service attacks on services that use Comrak to parse Markdown.

Patches

0.17.0 contains fixes to known quadratic parsing issues.

Workarounds

n/a

References

References

@kivikakk kivikakk published to kivikakk/comrak Mar 28, 2023
Published to the GitHub Advisory Database Mar 28, 2023
Reviewed Mar 28, 2023
Published by the National Vulnerability Database Mar 28, 2023
Last updated May 1, 2023

Severity

Moderate
5.3
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Weaknesses

CVE ID

CVE-2023-28626

GHSA ID

GHSA-8hqf-xjwp-p67v

Source code

Credits

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