CVE-2021-32706

Pi-hole's Web interface provides a central location to manage a Pi-hole instance and review performance statistics. Prior to Pi-hole Web interface version 5.5.1, the `validDomainWildcard` preg_match filter allows a malicious character through that can be used to execute code, list directories, and overwrite sensitive files. The issue lies in the fact that one of the periods is not escaped, allowing any character to be used in its place. A patch for this vulnerability was released in version 5.5.1.

Affected products

Pi-Hole

Pi-hole

< 5.5.1

Fix

Available

CVSS 3.1

8.8 HIGH

EPSS

60.2% (99th percentile)

Weakness

CWE-94

NVD status

Modified

Published

2021-08-04