CVE-2025-34087: pi-hole Command Injection — Exploit

Description

An authenticated command injection vulnerability exists in Pi-hole versions up to 3.3. When adding a domain to the allowlist via the web interface, the domain parameter is not properly sanitized, allowing an attacker to append OS commands to the domain string. These commands are executed on the underlying operating system with the privileges of the Pi-hole service user. This behavior was present in the legacy AdminLTE interface and has since been patched in later versions.

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CVSS v3.1 Score

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-78 OS Command Injection

Affected Products

Vendor	Product	Versions
pi-hole	pi-hole	< 3.3

References

Exploits

https://pulsesecurity.co.nz/advisories/pihole-v3.3-vulns https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/http/pihole_whitelist_exec.rb

Other References

https://github.com/pi-hole/web/releases/tag/v4.0 https://pi-hole.net/ https://vulncheck.com/advisories/pihole-adminlte-whitelist-rce

Frequently Asked Questions

What is CVE-2025-34087? +

An authenticated command injection vulnerability exists in Pi-hole versions up to 3.3. When adding a domain to the allowlist via the web interface, the domain parameter is not properly sanitized, allowing an attacker to append OS commands to the domain string. These commands are executed on the underlying operating system with the privileges of the Pi-hole service user. This behavior was present in the legacy AdminLTE interface and has since been patched in later versions. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2025-34087? +

CVE-2025-34087 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-34087? +

CVE-2025-34087 affects products from pi-hole, specifically: pi-hole. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-34087? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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