Vulnerability · Published May 22, 2025 · Assigned by GitHub_M
CVE-2025-47780cli_permissions.conf: deny option does not work for disallowing shell commands
Medium 4.8
In plain English
A medium-severity OS command injection in asterisk from asterisk. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Asterisk is an open-source private branch exchange (PBX). Prior to versions 18.26.2, 20.14.1, 21.9.1, and 22.4.1 of Asterisk and versions 18.9-cert14 and 20.7-cert5 of certified-asterisk, trying to disallow shell commands to be run via the Asterisk command line interface (CLI) by configuring `cli_permissions.conf` (e.g. with the config line `deny=!*`) does not work which could lead to a security risk. If an administrator running an Asterisk instance relies on the `cli_permissions.conf` file to work and expects it to deny all attempts to execute shell commands, then this could lead to a security vulnerability. Versions 18.26.2, 20.14.1, 21.9.1, and 22.4.1 of Asterisk and versions 18.9-cert14 and 20.7-cert5 of certified-asterisk fix the issue.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:14 | asterisk | 1:22.4.1~dfsg+~cs6.15.60671435-1 | DEBIAN-CVE-2025-47780 |
| Ubuntu:22.04:LTS | asterisk | no fix listed | UBUNTU-CVE-2025-47780 |
| Ubuntu:24.04:LTS | asterisk | no fix listed | UBUNTU-CVE-2025-47780 |
| Ubuntu:25.10 | asterisk | no fix listed | UBUNTU-CVE-2025-47780 |
| Ubuntu:26.04:LTS | asterisk | no fix listed | UBUNTU-CVE-2025-47780 |
| Ubuntu:26.10 | asterisk | no fix listed | UBUNTU-CVE-2025-47780 |
Affected products (as reported)
Weakness: CWE-78 · Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N