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Vulnerability of PulseAudio: privilege escalation

Synthesis of the vulnerability 

An attacker can bypass restrictions of PulseAudio, in order to escalate his privileges.
Impacted software: Ubuntu.
Severity of this computer vulnerability: 1/4.
Creation date: 13/05/2020.
Références of this announce: CVE-2020-11931, USN-4355-1, VIGILANCE-VUL-32260.

Description of the vulnerability 

An attacker can bypass restrictions of PulseAudio, in order to escalate his privileges.
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This computer vulnerability impacts software or systems such as Ubuntu.

Our Vigil@nce team determined that the severity of this weakness bulletin is low.

The trust level is of type confirmed by the editor, with an origin of user shell.

An attacker with a expert ability can exploit this weakness.

Solutions for this threat 

Ubuntu: new pulseaudio packages.
New packages are available:
  Ubuntu 20.04 LTS: pulseaudio 1:13.99.1-1ubuntu3.2
  Ubuntu 19.10: pulseaudio 1:13.0-1ubuntu1.2
  Ubuntu 18.04 LTS: pulseaudio 1:11.1-1ubuntu7.7
  Ubuntu 16.04 LTS: pulseaudio 1:8.0-0ubuntu3.12
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