cli_permissions.conf: deny option does not work for disallowing shell commands
Summary
cli_permissions.conf: deny option does not work for disallowing shell commands
Original description
The description as published by the source.
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.
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2025-47780 asterisk Fixed in: 1:16.28.0~dfsg-0+deb11u7
- Ubuntu UBUNTU-CVE-2025-47780 asterisk
References
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov
- web lists.debian.org