CVE-2020-11108

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 78.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2020-05-11 · updated 2026-06-17
Weakness: CWE-434

Description

The Gravity updater in Pi-hole through 4.4 allows an authenticated adversary to upload arbitrary files. This can be abused for Remote Code Execution by writing to a PHP file in the web directory. (Also, it can be used in conjunction with the sudo rule for the www-data user to escalate privileges to root.) The code error is in gravity_DownloadBlocklistFromUrl in gravity.sh.

Affected products

pi-hole: through 4.4

References

http://packetstormsecurity.com/files/157623/Pi-hole-4.4-Remote-Code-Execution.html
http://packetstormsecurity.com/files/157624/Pi-hole-4.4-Remote-Code-Execution-Privilege-Escalation.html
http://packetstormsecurity.com/files/157748/Pi-Hole-heisenbergCompensator-Blocklist-OS-Command-Execution.html
http://packetstormsecurity.com/files/157839/Pi-hole-4.4.0-Remote-Code-Execution.html
https://frichetten.com/blog/cve-2020-11108-pihole-rce/
https://github.com/Frichetten/CVE-2020-11108-PoC
http://packetstormsecurity.com/files/157623/Pi-hole-4.4-Remote-Code-Execution.html
http://packetstormsecurity.com/files/157624/Pi-hole-4.4-Remote-Code-Execution-Privilege-Escalation.html
http://packetstormsecurity.com/files/157748/Pi-Hole-heisenbergCompensator-Blocklist-OS-Command-Execution.html
http://packetstormsecurity.com/files/157839/Pi-hole-4.4.0-Remote-Code-Execution.html
https://frichetten.com/blog/cve-2020-11108-pihole-rce/
https://github.com/Frichetten/CVE-2020-11108-PoC

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