CVE-2020-16123 — MEDIUM (4.4)

Vulnerability 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.

CVSS Score

4.4

MEDIUM

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

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Canonical	Ubuntu Linux	16.04

Related Weaknesses (CWE)

CWE-362

References

https://launchpad.net/bugs/1895928ExploitIssue TrackingThird Party Advisory
https://ubuntu.com/USN-4640-1PatchThird Party Advisory
https://launchpad.net/bugs/1895928ExploitIssue TrackingThird Party Advisory
https://ubuntu.com/USN-4640-1PatchThird Party Advisory

FAQ

What is CVE-2020-16123?

CVE-2020-16123 is a vulnerability with a CVSS score of 4.4 (MEDIUM). 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 missin...

How severe is CVE-2020-16123?

CVE-2020-16123 has been rated MEDIUM with a CVSS base score of 4.4/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-16123?

Check the references section above for vendor advisories and patch information. Affected products include: Canonical Ubuntu Linux.