SB2021081904 - Denial of service in Apache Roller
Published: August 19, 2021
Security Bulletin ID
SB2021081904
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Incorrect Regular Expression (CVE-ID: CVE-2021-33580)
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.