Is CVE-2020-16123 in the CISA KEV catalog?

No. CVE-2020-16123 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-16123?

CVE-2020-16123 has a CVSS v3 base score of 4.4 (MEDIUM).

What is the EPSS score for CVE-2020-16123?

CVE-2020-16123 has an EPSS score of 0.31% (23th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-16123?

Upgrade libpulse-mainloop-glib0 on ubuntu 16.04 to 1:8.0-0ubuntu3.15 or later. Fixes are available for 17 affected products.

CVE & CISA-KEV Catalog

CVE-2020-16123

MEDIUM

4.4

CVSS v3

NVD

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.

CWE-362Race Condition

How to fix

Remediation Available

libpulse-mainloop-glib0Ubuntu

Fixed in:1:8.0-0ubuntu3.15USN-4640-1

Fixed in:1:11.1-1ubuntu7.11USN-4640-1

Fixed in:1:13.99.1-1ubuntu3.8USN-4640-1

libpulse0Ubuntu

Fixed in:1:8.0-0ubuntu3.15USN-4640-1

Fixed in:1:11.1-1ubuntu7.11USN-4640-1

Fixed in:1:13.99.1-1ubuntu3.8USN-4640-1

libpulsedspUbuntu

Fixed in:1:8.0-0ubuntu3.15USN-4640-1

Fixed in:1:11.1-1ubuntu7.11USN-4640-1

Fixed in:1:13.99.1-1ubuntu3.8USN-4640-1

pulseaudioUbuntu

Fixed in:1:8.0-0ubuntu3.15USN-4640-1

Fixed in:1:11.1-1ubuntu7.11USN-4640-1

Fixed in:1:13.99.1-1ubuntu3.8USN-4640-1

pulseaudio-equalizerUbuntu

Fixed in:1:11.1-1ubuntu7.11USN-4640-1

Fixed in:1:13.99.1-1ubuntu3.8USN-4640-1

pulseaudio-esound-compatUbuntu

Fixed in:1:8.0-0ubuntu3.15USN-4640-1

Fixed in:1:11.1-1ubuntu7.11USN-4640-1

pulseaudio-module-bluetoothUbuntu

Fixed in:1:8.0-0ubuntu3.15USN-4640-1

Fixed in:1:11.1-1ubuntu7.11USN-4640-1

Fixed in:1:13.99.1-1ubuntu3.8USN-4640-1

pulseaudio-module-droidUbuntu

Fixed in:1:8.0-0ubuntu3.15USN-4640-1

pulseaudio-module-gconfUbuntu

Fixed in:1:8.0-0ubuntu3.15USN-4640-1

Fixed in:1:11.1-1ubuntu7.11USN-4640-1

pulseaudio-module-gsettingsUbuntu

Fixed in:1:13.99.1-1ubuntu3.8USN-4640-1

pulseaudio-module-jackUbuntu

Fixed in:1:8.0-0ubuntu3.15USN-4640-1

Fixed in:1:11.1-1ubuntu7.11USN-4640-1

Fixed in:1:13.99.1-1ubuntu3.8USN-4640-1

pulseaudio-module-lircUbuntu

Fixed in:1:8.0-0ubuntu3.15USN-4640-1

Fixed in:1:11.1-1ubuntu7.11USN-4640-1

Fixed in:1:13.99.1-1ubuntu3.8USN-4640-1

pulseaudio-module-raopUbuntu

Fixed in:1:8.0-0ubuntu3.15USN-4640-1

Fixed in:1:11.1-1ubuntu7.11USN-4640-1

Fixed in:1:13.99.1-1ubuntu3.8USN-4640-1

pulseaudio-module-trust-storeUbuntu

Fixed in:1:8.0-0ubuntu3.15USN-4640-1

pulseaudio-module-x11Ubuntu

Fixed in:1:8.0-0ubuntu3.15USN-4640-1

pulseaudio-module-zeroconfUbuntu

Fixed in:1:8.0-0ubuntu3.15USN-4640-1

Fixed in:1:11.1-1ubuntu7.11USN-4640-1

Fixed in:1:13.99.1-1ubuntu3.8USN-4640-1

pulseaudio-utilsUbuntu

Fixed in:1:8.0-0ubuntu3.15USN-4640-1

Fixed in:1:11.1-1ubuntu7.11USN-4640-1

Fixed in:1:13.99.1-1ubuntu3.8USN-4640-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityHigh

Privileges RequiredLow

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.31%probability of exploitation in 30 days

23rdpercentile

Low risk: more likely to be exploited than 23% of all known CVEs.

References

Patch1

ubuntu.com

Exploit1

launchpad.net

Related Vulnerabilities

Other CWE-362 (Race Condition) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-6387	High	8.1	100%	-	Fix
CVE-2023-36884	High	7.5	99%	KEV + Ransom	Fix
CVE-2018-15473	Medium	5.3	99%	-	Fix
CVE-2024-27983	High	8.2	87%	-	Fix
CVE-2014-0226	Medium	6.8	86%	-	Fix
CVE-2016-5195	High	7.0	84%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.