Inefficient regular expression complexity in Postcss - CVE-2021-23368

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Main Vulnerability Database Vulnerabilities #VU80342

Inefficient regular expression complexity in Postcss - CVE-2021-23368

Published: September 4, 2023


Vulnerability identifier: #VU80342
CSH Severity: Medium
CVSS v4: 6.9 [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]
CVE-ID: CVE-2021-23368
CWE-ID: CWE-1333
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

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

The vulnerability exists due to insufficient input validation when processing source map with a regular expressions. A remote attacker can pass specially crafted data to the application and perform regular expression denial of service (ReDos) attack.


Affected software

Postcss
QRadar User Behavior Analytics

How to mitigate CVE-2021-23368

Install update from vendor's website.

Postcss - update to 8.2.10
QRadar User Behavior Analytics - update to 4.1.11

External References

Related Security Bulletins