Vulnerability Report

CVE-2020-27352

Title: Canonical Snapd Auth Bypass

Auth Bypass

Proof Of Concept

No public PoC currently indexed for CVE-2020-27352.

CWE Category CWE-269
Published Date Jun 21, 2024
Modified Date Aug 26, 2025
Exploit Status Not Found
Score 9.3 CVSS v3.1
Exploit Probability (EPSS)
0.26%

Vulnerability Summary

CVE-2020-27352: 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.

Impacted Vendors

S
snapcraft 1
C
canonical 1

Reference Links

https://bugs.launchpad.net/snapd/+bug/1910456 https://ubuntu.com/security/notices/USN-4728-1 https://www.cve.org/CVERecord?id=CVE-2020-27352 https://bugs.launchpad.net/snapd/+bug/1910456 https://ubuntu.com/security/notices/USN-4728-1 https://www.cve.org/CVERecord?id=CVE-2020-27352
CVSS v3.1
Source Entity [email protected]
Severity CRITICAL
9.3
Attack Vector
LOCAL
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
CHANGED
RAW VECTOR CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS v3.1
Source Entity [email protected]
Severity HIGH
8.8
Attack Vector
LOCAL
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
CHANGED
RAW VECTOR CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2020-27352 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector LOCAL
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected Stack

No specific products linked.