Regular expression denial of service in pillarjs path-to-regexp

1) Inefficient regular expression complexity

EUVDB-ID: #VU101895

Risk: Low

CVSSv4.0: 2.7 [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 - Inefficient Regular Expression Complexity

Exploit availability: No

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

CPE2.3

• cpe:2.3:a:pillarjs:path-to-regexp:0.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:pillarjs:path-to-regexp:0.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:pillarjs:path-to-regexp:0.1.2:*:*:*:*:*:*:*

External links

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

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.