---
title: "CVE-2025-47779\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2025-47779?format=md
keywords: index, follow
---

# CVE-2025-47779

Publication date 22 May 2025

Last updated 11 July 2025

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**7.7 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2025-47779?format=md#impact-score)

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## 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.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| asterisk | 26.04 LTS resolute | Needs evaluation |
| 25.10 questing | Ignored end of life, was needs-triage |
| 25.04 plucky | Ignored end of life, was needs-triage |
| 24.10 oracular | Ignored end of life, was needs-triage |
| 24.04 LTS noble | Needs evaluation |
| 22.04 LTS jammy | Needs evaluation |
| 20.04 LTS focal | Needs evaluation |
| 18.04 LTS bionic | Needs evaluation |
| 16.04 LTS xenial | Needs evaluation |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

7.7 · High

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | Low |
  | User interaction | None |
  | Scope | Changed |
  | Confidentiality impact | None |
  | Integrity impact | High |
  | Availability impact | None |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 7.7 · High |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-47779)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2025-47779)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2025-47779)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2025-47779)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2025-47779>
* <https://github.com/asterisk/asterisk/blob/master/configs/samples/pjsip.conf.sample>
* <https://github.com/asterisk/asterisk/security/advisories/GHSA-2grh-7mhv-fcfw>