CVE-2021-32706

Public Exploit
(Authenticated) Remote Code Execution Possible in Web Interface 5.5

Description

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.

Category

7.6
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 61.05% Top 5%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: pi-hole AdminLTE
Published at:
Updated at:

References

Link Tags
https://github.com/pi-hole/AdminLTE/security/advisories/GHSA-5cm9-6p3m-v259 third party advisory exploit
https://github.com/pi-hole/AdminLTE/releases/tag/v5.5.1 third party advisory release notes

Frequently Asked Questions

What is the severity of CVE-2021-32706?
CVE-2021-32706 has been scored as a high severity vulnerability.
How to fix CVE-2021-32706?
To fix CVE-2021-32706, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-32706 being actively exploited in the wild?
It is possible that CVE-2021-32706 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~61% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-32706?
CVE-2021-32706 affects pi-hole AdminLTE.
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