Bug 1905475 (CVE-2020-16123) - CVE-2020-16123 pulseaudio: race condition in snap policy module allows for information exposure
Summary: CVE-2020-16123 pulseaudio: race condition in snap policy module allows for in...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2020-16123
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks: 1905476
TreeView+ depends on / blocked
 
Reported: 2020-12-08 12:44 UTC by Marian Rehak
Modified: 2021-02-16 18:46 UTC (History)
5 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2020-12-16 10:18:30 UTC
Embargoed:

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Description Marian Rehak 2020-12-08 12:44:29 UTC 
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.

External Reference:

https://launchpad.net/bugs/1895928
https://ubuntu.com/USN-4640-1
Comment 1 Product Security DevOps Team 2020-12-16 10:18:30 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2020-16123
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