Vulnerability Description
Marked is a markdown parser and compiler. Prior to version 4.0.10, the regular expression `block.def` may cause catastrophic backtracking against some strings and lead to a regular expression denial of service (ReDoS). Anyone who runs untrusted markdown through a vulnerable version of marked and does not use a worker with a time limit may be affected. This issue is patched in version 4.0.10. As a workaround, avoid running untrusted markdown through marked or run marked on a worker thread and set a reasonable time limit to prevent draining resources.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Marked Project | Marked | < 4.0.10 |
| Fedoraproject | Fedora | 36 |
Related Weaknesses (CWE)
References
- https://github.com/markedjs/marked/commit/c4a3ccd344b6929afa8a1d50ac54a721e57012PatchThird Party Advisory
- https://github.com/markedjs/marked/releases/tag/v4.0.10Release NotesThird Party Advisory
- https://github.com/markedjs/marked/security/advisories/GHSA-rrrm-qjm4-v8hfExploitThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://github.com/markedjs/marked/commit/c4a3ccd344b6929afa8a1d50ac54a721e57012PatchThird Party Advisory
- https://github.com/markedjs/marked/releases/tag/v4.0.10Release NotesThird Party Advisory
- https://github.com/markedjs/marked/security/advisories/GHSA-rrrm-qjm4-v8hfExploitThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
FAQ
What is CVE-2022-21680?
CVE-2022-21680 is a vulnerability with a CVSS score of 7.5 (HIGH). Marked is a markdown parser and compiler. Prior to version 4.0.10, the regular expression `block.def` may cause catastrophic backtracking against some strings and lead to a regular expression denial o...
How severe is CVE-2022-21680?
CVE-2022-21680 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-21680?
Check the references section above for vendor advisories and patch information. Affected products include: Marked Project Marked, Fedoraproject Fedora.