VULNERABILITY INTELLIGENCE

CVE-2020-16123

CVSS score4.4 MEDIUM

EPSS probability0.32%

CISA KEVNot currently listed

Published2020-12-04

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N

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.

Weakness classification

security@ubuntu.com: CWE-362
nvd@nist.gov: CWE-362

Primary references

security@ubuntu.com — Exploit, Issue Tracking, Third Party Advisory
security@ubuntu.com — Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Exploit, Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Patch, Third Party Advisory