#VU101895 Inefficient regular expression complexity in path-to-regexp - CVE-2024-52798

Vulnerability identifier: #VU101895

Vulnerability risk: Low

CVSSv4.0: [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-52798

CWE-ID: CWE-1333

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
path-to-regexp
Web applications / JS libraries

Vendor: pillarjs

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient input validation when processing untrusted input with a regular expressions. A remote attacker can pass specially crafted data to the application and perform regular expression denial of service (ReDos) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

path-to-regexp: 0.1.0 - 0.1.11

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External links
http://github.com/pillarjs/path-to-regexp/commit/f01c26a013b1889f0c217c643964513acf17f6a4
http://github.com/pillarjs/path-to-regexp/security/advisories/GHSA-rhx6-c78j-4q9w

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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.