#VU76061 Incorrect Regular Expression in marked - CVE-2022-21680
Vulnerability identifier: #VU76061
Vulnerability risk: Medium
CVSSv4.0: 6.6 [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:
CWE-ID:
CWE-185
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
marked
Other software /
Other software solutions
Vendor: 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.
Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability..
Vulnerable software versions
marked: before 4.0.10
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/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
