#VU72015 Incorrect Regular Expression in HTML::StripScripts - CVE-2023-24038

Vulnerability identifier: #VU72015

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: CVE-2023-24038

CWE-ID: CWE-185

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
HTML::StripScripts
Web applications / Other software

Vendor: Clinton Gormley

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 in _hss_attval_style. 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

HTML::StripScripts: 0.01 - 1.06

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External links
https://github.com/clintongormley/perl-html-stripscripts/issues/3
https://lists.debian.org/debian-lts-announce/2023/01/msg00036.html
https://www.debian.org/security/2023/dsa-5339

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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.