GitHub Advisoryadvisory · crates.io
GHSA-xxmq-4vph-956w Comrak vulnerable to production of excessive output when parsing Markdown (GHSL-2023-048)
MEDIUM
Official page ↗
- Ecosystem
- crates.io
- Packages
- comrak
- Severity
- Moderate
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- Reviewed
- 2023-03-28
Affected packages
• crates.io comrak: < 0.17.0 → fixed in 0.17.0
Description
Impact
comrak is vulnerable to the upstream cmark issue, "Issue revealed by fuzzer". A large number of references in a markdown document can trigger an overly large response.
Patches
0.17.0 contains https://github.com/kivikakk/comrak/commit/70f97f3ea4eae30ffbd1b94c764a3de2f1c41d2a, which limits reference output to a 100Kb maximum.
Workarounds
n/a
References
• https://github.com/commonmark/cmark/issues/354
References
- https://github.com/kivikakk/comrak/security/advisories/GHSA-xxmq-4vph-956w web
- https://github.com/commonmark/cmark/issues/354 web
- https://github.com/kivikakk/comrak/commit/70f97f3ea4eae30ffbd1b94c764a3de2f1c41d2a web
- https://github.com/kivikakk/comrak package
- https://github.com/kivikakk/comrak/releases/tag/0.17.0 web