Vulnerability identifier: #VU67493
Vulnerability risk: Medium
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-400
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
cmark-gfm
Universal components / Libraries /
Software for developers
Vendor: GitHub
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a polynomial time complexity issue in the autolink extension. A remote user can trigger resource exhaustion and perform a denial of service (DoS) attack.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
cmark-gfm: 0.29.0.gfm.0 - 0.29.0.gfm.5
External links
http://github.com/github/cmark-gfm/security/advisories/GHSA-cgh3-p57x-9q7q
http://en.wikipedia.org/wiki/Time_complexity
http://github.com/github/cmark-gfm/commit/9d57d8a23142b316282bdfc954cb0ecda40a8655
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.