#VU81703 Inefficient regular expression complexity in AngularJS - CVE-2023-26116

Vulnerability identifier: #VU81703

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-2023-26116

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 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
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

AngularJS: 1.2.21 - 1.8.3

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External links
https://stackblitz.com/edit/angularjs-vulnerability-angular-copy-redos
https://security.snyk.io/vuln/SNYK-JS-ANGULAR-3373044
https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-5406320
https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBANGULAR-5406322
https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-5406321

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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.