#VU55315 Incorrect Regular Expression in path-parse - CVE-2021-23343

Vulnerability identifier: #VU55315

Vulnerability risk: Medium

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:Green]

CVE-ID: CVE-2021-23343

CWE-ID: CWE-185

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
path-parse
Web applications / JS libraries

Vendor: Javier Blanco Gutiérrez

Description

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

The vulnerability exists due to insufficient input validation in splitDeviceRe, splitTailRe, and splitPathRe regular expressions. 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

path-parse: 1.0.0 - 1.0.6

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External links
https://github.com/jbgutierrez/path-parse/issues/8
https://snyk.io/vuln/SNYK-JS-PATHPARSE-1077067
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1279028
https://lists.apache.org/thread.html/r6a32cb3eda3b19096ad48ef1e7aa8f26e005f2f63765abb69ce08b85@%3Cdev.myfaces.apache.org%3E
https://github.com/advisories/GHSA-hj48-42vr-x3v9
https://www.npmjs.com/advisories/1773

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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.