CVE-2025-47779

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, 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 Software

VendorProductVersion RangeStatus
asteriskasterisk< 18.9-cert14affected
asteriskasterisk>= 18.10, < 18.26.2affected
asteriskasterisk>= 20.0, < 20.7-cert5affected
asteriskasterisk>= 20.8, < 20.14.1affected
asteriskasterisk>= 21.0, < 21.9.1affected
asteriskasterisk>= 22.0, < 22.4.1affected

Weaknesses

  • CWE-140: CWE-140: Improper Neutralization of Delimiters
  • CWE-792: CWE-792: Incomplete Filtering of One or More Instances of Special Elements

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: poc
    • Automatable: yes
    • Technical Impact: partial

CVE Program Container

Additional References

References