Vulnerability-Lookup

VAR-202505-4134

Vulnerability from variot - Updated: 2025-11-18 15:24

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. Sangoma of Asterisk and certified asterisk for, OS A command injection vulnerability exists.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state

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CVE-2025-47780 (GCVE-0-2025-47780)

Vulnerability from cvelistv5 – Published: 2025-05-22 16:56 – Updated: 2025-11-03 20:04

Title

cli_permissions.conf: deny option does not work for disallowing shell commands

Summary

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.

Severity ?

4.8 (Medium)


                        
                          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

CWE

CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Assigner

GitHub_M

References

URL

Tags

https://github.com/asterisk/asterisk/security/adv…

x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	asterisk	asterisk	Affected: < 18.9-cert14 Affected: >= 18.10, < 18.26.2 Affected: >= 20.0, < 20.7-cert5 Affected: >= 20.8, < 20.14.1 Affected: >= 21.0, < 21.9.1 Affected: >= 22.0, < 22.4.1

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

VAR-202505-4134

CVE-2025-47780 (GCVE-0-2025-47780)

Tags

Sightings

Nomenclature