#VU76180 Incorrect regular expression in scss-tokenizer - CVE-2022-25758

Vulnerability identifier: #VU76180

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-2022-25758

CWE-ID: CWE-185

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
scss-tokenizer
Web applications / JS libraries

Vendor: Sass Tools

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 regular expressions in loadAnnotation() function. A remote attacker can pass specially crafted data to the application and perform regular expression denial of service (ReDos) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

scss-tokenizer: 0.0.1 - 0.4.2

---

External links
http://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-2936782
http://snyk.io/vuln/SNYK-JS-SCSSTOKENIZER-2339884
http://github.com/sasstools/scss-tokenizer/issues/45

---

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.