9.3

CVE-2020-27352: canonical ltd. snapd Improper Privilege Management

CVSS: 9.3v3.1CriticalAnalyzed
AliasesUBUNTU-CVE-2020-27352USN-4728-1DEBIAN-CVE-2020-27352
Published 21-06-2024Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-27352 is a critical (CVSS 9.3) Improper Privilege Management vulnerability in canonical ltd. snapd. EPSS estimates a 0.26% chance of exploitation in the next 30 days, higher than 16.2% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.3/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.26%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 21-06-2024
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

When generating the systemd service units for the docker snap (and other similar snaps), snapd does not specify Delegate=yes - as a result systemd will move processes from the containers created and managed by these snaps into the cgroup of the main daemon within the snap itself when reloading system units. This may grant additional privileges to a container within the snap that were not originally intended.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.26%

Chance of exploitation in the next 30 days

Percentile

16%

Versus all other CVEs

30-day change

0.00 pp

From 0.26% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.26%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (bugs.launchpad.net)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Canonical2 products
Canonical ltd.1 product
Debian1 product
  • snapd< 2.49-1
Ubuntu1 product
  • snapd< 2.48.3 | < 2.48.3+18.04 | < 2.48.3+20.04

4 vendors · 5 products

References

5 links