3.3

CVE-2020-11931: canonical pulseaudio Improper Access Control

CVSS: 3.3v3.1LowModified
AliasesUBUNTU-CVE-2020-11931USN-4355-1
Published 15-05-2020Last modified 17-09-2024
Open JSON

Vulnerability summary

CVE-2020-11931 is a low (CVSS 3.3) Improper Access Control vulnerability in canonical pulseaudio. EPSS estimates a 0.33% chance of exploitation in the next 30 days, higher than 24.5% of scored vulnerabilities.

Overall risk
13/100
0100
Low · default modelHow is this calculated?
CVSS score
3.3/10
010
Low · v3.1 (CVE.org)
EPSS score
0.33%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 15-05-2020
    PublishedVulnerability first disclosed.
  2. 17-09-2024
    Last modifiedVulnerability information updated.

Description

An Ubuntu-specific modification to Pulseaudio to provide security mediation for Snap-packaged applications was found to have a bypass of intended access restriction for snaps which plugs any of pulseaudio, audio-playback or audio-record via unloading the pulseaudio snap policy module. This issue affects: pulseaudio 1:8.0 versions prior to 1:8.0-0ubuntu3.12; 1:11.1 versions prior to 1:11.1-1ubuntu7.7; 1:13.0 versions prior to 1:13.0-1ubuntu1.2; 1:13.99.1 versions prior to 1:13.99.1-1ubuntu3.2;

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.33%

Chance of exploitation in the next 30 days

Percentile

25%

Versus all other CVEs

30-day change

0.00 pp

From 0.33% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.33%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Canonical2 products
  • pulseaudio≥ 1:8.0, < 1:8.0-0ubuntu3.12 | ≥ 1:11.1, < 1:11.1-1ubuntu7.7 | ≥ 1:13.0, < 1:13.0-1ubuntu1.2 | ≥ 1:13.99.1, < 1:13.99.1-1ubuntu3.2
  • ubuntu_linuxEOL16.04 | 18.04 | 19.10 | 20.04
Pulseaudio1 product
Ubuntu1 product
  • pulseaudio< 1:8.0-0ubuntu3.12 | < 1:11.1-1ubuntu7.7 | < 1:13.99.1-1ubuntu3.2

3 vendors · 4 products

References

6 links