Vulnerability · Published May 22, 2025 · Assigned by GitHub_M
CVE-2025-47779Using malformed From header can forge identity with ";" or NULL in name portion
High 7.7
In plain English
A high-severity security flaw in asterisk from asterisk. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 45% 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, SIP requests of the type MESSAGE (RFC 3428) authentication do not get proper alignment. An authenticated attacker can spoof any user identity to send spam messages to the user with their authorization token. Abuse of this security issue allows authenticated attackers to send fake chat messages can be spoofed to appear to come from trusted entities. Even administrators who follow Security best practices and Security Considerations can be impacted. Therefore, abuse can lead to spam and enable social engineering, phishing and similar attacks. 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-2025-47779 |
| Ubuntu:22.04:LTS | asterisk | no fix listed | UBUNTU-CVE-2025-47779 |
| Ubuntu:24.04:LTS | asterisk | no fix listed | UBUNTU-CVE-2025-47779 |
| Ubuntu:25.10 | asterisk | no fix listed | UBUNTU-CVE-2025-47779 |
| Ubuntu:26.04:LTS | asterisk | no fix listed | UBUNTU-CVE-2025-47779 |
| Ubuntu:26.10 | asterisk | no fix listed | UBUNTU-CVE-2025-47779 |
Affected products (as reported)
Weakness: CWE-140, CWE-792 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N