#VU87188 Inefficient regular expression complexity in AngularJS - CVE-2022-25844

Vulnerability identifier: #VU87188

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-2022-25844

CWE-ID: CWE-1333

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
AngularJS
Web applications / JS libraries

Vendor: Google

Description

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

The vulnerability exists due to angular provides a custom locale rule that makes it possible to assign the parameter in posPre: ' '.repeat() of NUMBER_FORMATS.PATTERNS[1].posPre with a very high value. 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

AngularJS: 1.7.0 - 1.8.3

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External links
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-2772737
https://snyk.io/vuln/SNYK-JS-ANGULAR-2772735
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-2772736
https://stackblitz.com/edit/angularjs-material-blank-zvtdvb
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBANGULAR-2772738
https://security.netapp.com/advisory/ntap-20220629-0009/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2WUSPYOTOMAZPDEFPWPSCSPMNODRDKK3/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7LNAKCNTVBIHWAUT3FKWV5N67PQXSZOO/

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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.