Vulnerability in Pulseaudio
CVE-2020-11931
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;
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (23.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 23.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Pulseaudio
- Canonical Pulseaudio — versions 1:8.0, 1:11.1, 1:13.0
- Canonical Ubuntu Linux — versions 16.04, 18.04, 19.10
Weakness classification (CWE)
Public proof-of-concept exploits
References
- forum.snapcraft.io/t/audio-switcher-pulseaudio-interface-auto-connect-request/1… (Third Party Advisory)
- usn.ubuntu.com/4355-1/ (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-11931?
- CVE-2020-11931 is a low-severity vulnerability in Pulseaudio, classified under Improper Access Control. CVSS score: 3.3/10. Published 2020-05-15.
- How severe is CVE-2020-11931?
- Low severity. CVSS v3 base score is 3.3 out of 10.
- Is CVE-2020-11931 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.