---
title: "CVE-2016-9928\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-2016-9928?format=md
keywords: index, follow
---

# CVE-2016-9928

Publication date 6 February 2020

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**7.4 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2016-9928?format=md#impact-score)

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## Description

MCabber before 1.0.4 is vulnerable to roster push attacks, which allows
remote attackers to intercept communications, or add themselves as an
entity on a 3rd party's roster as another user, which will also garner
associated privileges, via crafted XMPP packets.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| mcabber | 20.04 LTS focal | Not affected |
| 19.10 eoan | Not affected |
| 19.04 disco | Not affected |
| 18.10 cosmic | Not affected |
| 18.04 LTS bionic | Not affected |
| 17.10 artful | Ignored end of life |
| 17.04 zesty | Ignored end of life |
| 16.10 yakkety | Ignored end of life |
| 16.04 LTS xenial | Fixed 0.10.2-1+deb8u1build0.16.04.1 |
| 14.04 LTS trusty | Not in release |
| 12.04 LTS precise | Ignored end of life |

---

* [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**

7.4 · High

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 7.4 · High |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9928)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2016-9928)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2016-9928)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2016-9928)

### Related Ubuntu Security Notices (USN)

+ [USN-4506-1](https://usn.ubuntu.com/USN-4506-1)
+ MCabber vulnerability
+ 16 September 2020

### Other references

* <https://bitbucket.org/McKael/mcabber-crew/commits/6e1ead98930d7dd0a520ad17c720ae4908429033/raw>
* <http://www.openwall.com/lists/oss-security/2016/12/09/5>
* <https://www.cve.org/CVERecord?id=CVE-2016-9928>