Incorrect Regular Expression in Apache Roller - CVE-2021-33580

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Main Vulnerability Database Vulnerabilities #VU55979

Incorrect Regular Expression in Apache Roller - CVE-2021-33580

Published: August 19, 2021


Vulnerability identifier: #VU55979
CSH Severity: Medium
CVSSv4.0: 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-2021-33580
CWE-ID: CWE-185
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Apache Roller
Software vendor:
Apache Foundation

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 the request.getHeader, request.getRequestURL, and request.getQueryString functions. A remote attacker can pass specially crafted data to the application and perform regular expression denial of service (ReDos) attack.


Remediation

Install update from vendor's website.

External links