#VU76061 Incorrect Regular Expression in marked - CVE-2022-21680
Published: May 12, 2023
Vulnerability identifier: #VU76061
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2022-21680
CWE-ID: CWE-185
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
marked
marked
Software vendor:
Marked
Marked
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to regular expression `block.def` may cause catastrophic backtracking against some strings. A remote attacker can pass specially crafted data to the application and perform regular expression denial of service (ReDos) attack.
Remediation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability..
External links
- https://github.com/markedjs/marked/security/advisories/GHSA-rrrm-qjm4-v8hf
- https://github.com/markedjs/marked/commit/c4a3ccd344b6929afa8a1d50ac54a721e57012c0
- https://github.com/markedjs/marked/releases/tag/v4.0.10
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AIXDMC3CSHYW3YWVSQOXAWLUYQHAO5UX/