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CVE PROGRAM SOURCE RECORD4.4 Medium

CVE-2020-16123

Bypass of snapd pulseaudio restrictions

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Status
Published
Published
Updated
Assigning organization
canonical

Description

An Ubuntu-specific patch in PulseAudio created a race condition where the snap policy module would fail to identify a client connection from a snap as coming from a snap if SCM_CREDENTIALS were missing, allowing the snap to connect to PulseAudio without proper confinement. This could be exploited by an attacker to expose sensitive information. Fixed in 1:13.99.3-1ubuntu2, 1:13.99.2-1ubuntu2.1, 1:13.99.1-1ubuntu3.8, 1:11.1-1ubuntu7.11, and 1:8.0-0ubuntu3.15.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Canonical pulseaudio

  • 1:13.99.3-1 to < 1:13.99.3-1ubuntu2affected
  • 1:13.99.2-1 to < 1:13.99.2-1ubuntu2.1affected
  • 1:13.99.1-1 to < 1:13.99.1-1ubuntu3.8affected
  • 1:11.1-1 to < 1:11.1-1ubuntu7.11affected
  • 1:8.0-0 to < 1:8.0-0ubuntu3.15affected

References