CVE-2020-11108

Pi-hole 4.4.0 - Remote Code Execution (Authenticated)

Severity Score

8.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

El actualizador de Gravity en Pi-hole versiones hasta 4.4, permite a un adversario autenticado cargar archivos arbitrarios. Esto puede ser abusado para una Ejecución de Código Remota al escribir en un archivo PHP en el directorio web. (Además, puede ser usado en conjunto con la regla de sudo para el usuario de www-data para escalar privilegios a root). El error de código está en la función gravity_DownloadBlocklistFromUrl en el archivo gravity.sh.

Pi-hole versions 4.4 and below suffer from a remote code execution vulnerability.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-03-30 CVE Reserved
2020-05-10 CVE Published
2020-05-10 First Exploit
2024-08-04 CVE Updated
2024-10-22 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-434: Unrestricted Upload of File with Dangerous Type

CAPEC

References (11)

URL	Tag	Source
http://packetstormsecurity.com/files/157748/Pi-Hole-heisenbergCompensator-Blocklist-OS-Command-Execution.html	X_refsource_misc
http://packetstormsecurity.com/files/157839/Pi-hole-4.4.0-Remote-Code-Execution.html	X_refsource_misc
https://github.com/frichetten/CVE-2020-11108-PoC

URL	Date	SRC
https://www.exploit-db.com/exploits/48519	2020-05-26
https://www.exploit-db.com/exploits/48442	2020-05-10
https://www.exploit-db.com/exploits/48443	2020-05-10
https://www.exploit-db.com/exploits/48491	2020-05-19
https://github.com/Frichetten/CVE-2020-11108-PoC	2024-08-04
http://packetstormsecurity.com/files/157623/Pi-hole-4.4-Remote-Code-Execution.html	2024-08-04
http://packetstormsecurity.com/files/157624/Pi-hole-4.4-Remote-Code-Execution-Privilege-Escalation.html	2024-08-04
https://frichetten.com/blog/cve-2020-11108-pihole-rce	2024-08-04

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Pi-hole Search vendor "Pi-hole"		Pi-hole Search vendor "Pi-hole" for product "Pi-hole"				<= 4.4 Search vendor "Pi-hole" for product "Pi-hole" and version " <= 4.4"		-		Affected