CVE-2021-32793

Public Exploit
Stored XSS Vulnerability in the Pi-hole Webinterface

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 function to add domains to blocklists or allowlists is vulnerable to a stored cross-site-scripting vulnerability. User input added as a wildcard domain to a blocklist or allowlist is unfiltered in the web interface. Since the payload is stored permanently as a wildcard domain, this is a persistent XSS vulnerability. A remote attacker can therefore attack administrative user accounts through client-side attacks. Pi-hole Web Interface version 5.5.1 contains a patch for this vulnerability.

Category

5.7
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.22%
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/releases/tag/v5.5.1 third party advisory release notes
https://github.com/pi-hole/AdminLTE/security/advisories/GHSA-g3w6-q4fg-p8x8 third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-32793?
CVE-2021-32793 has been scored as a medium severity vulnerability.
How to fix CVE-2021-32793?
To fix CVE-2021-32793, 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-2021-32793 being actively exploited in the wild?
It is possible that CVE-2021-32793 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-32793?
CVE-2021-32793 affects pi-hole AdminLTE.
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