SB2025052604 - Multiple vulnerabilities in Asterisk

Description

This security bulletin contains information about 2 vulnerabilities.

1) Protection mechanism failure (CVE-ID: CVE-2025-47780)

CWE-ID: CWE-693 - Protection Mechanism Failure

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to permissions to deny command execution via the "cli_permissions.conf" file do not work as expected. A local user with access to Asterisk CLI can still execute arbitrary OS commands even if the current configuration disallows it.

2) Input validation error (CVE-ID: CVE-2025-47779)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/E:U/U:Green

The vulnerability allows a remote user to perform spoofing attack.

The vulnerability exists due to insufficient validation of MESSAGE SIP requests when handling the From header with a semicolon or NULL in the name portion. A remote authenticated user can spoof any user identity to send spam messages to the application users.

Remediation

Install update from vendor's website.

References

• https://github.com/asterisk/asterisk/security/advisories/GHSA-c7p6-7mvq-8jq2
• https://github.com/asterisk/asterisk/security/advisories/GHSA-2grh-7mhv-fcfw