kivikakk/comrak · Security
Comrak vulnerable to production of excessive output when parsing Markdown (GHSL-2023-048)
- GHSA ID
- GHSA-xxmq-4vph-956w
- Severity
- medium
- Published
- Updated
- CVSS
- 5.3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- CVSS v3
- 5.3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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
References
- https://github.com/kivikakk/comrak/security/advisories/GHSA-xxmq-4vph-956w ↗
- https://github.com/commonmark/cmark/issues/354 ↗
- https://github.com/kivikakk/comrak/commit/70f97f3ea4eae30ffbd1b94c764a3de2f1c41d2a ↗
- https://github.com/kivikakk/comrak/releases/tag/0.17.0 ↗
- https://github.com/advisories/GHSA-xxmq-4vph-956w ↗