CVE-2020-16123

Bypass of snapd pulseaudio restrictions

Published Dec 3, 2020 CVSS 3.1 · 4.4 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2020-8089 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.
Ubuntu USN Ubuntu USN USN-4640-1 PulseAudio vulnerability
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
canonical
Published
Updated
Sep 16, 2024, 7:20 PM
Reserved
Jul 29, 2020, 12:00 AM
Status
Modified
Published
Dec 4, 2020, 12:15 AM
Modified
Jun 17, 2026, 2:57 AM
Severity
Moderate
Public date
Nov 23, 2020, 12:00 AM