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CVE-2021-3155 Details

Description

snapd 2.54.2 and earlier created ~/snap directories in user home directories without specifying owner-only permissions. This could allow a local attacker to read information that should have been private. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.5 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CNA: [email protected]CVSS-B:3.8 LOWVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/snapcore/snapd/commit/6bcaeeccd16ed8298a301dd92f6907f88c24cc85	CVE	PatchThird Party Advisory
https://github.com/snapcore/snapd/commit/7d2a966620002149891446a53cf114804808dcca	CVE	PatchThird Party Advisory
https://ubuntu.com/security/notices/USN-5292-1	CVE	PatchVendor Advisory
https://github.com/snapcore/snapd/commit/6bcaeeccd16ed8298a301dd92f6907f88c24cc85	[email protected]	PatchThird Party Advisory
https://github.com/snapcore/snapd/commit/7d2a966620002149891446a53cf114804808dcca	[email protected]	PatchThird Party Advisory
https://ubuntu.com/security/notices/USN-5292-1	[email protected]	PatchVendor Advisory

see all 6 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-276	Incorrect Default Permissions	[email protected]
CWE-276	Incorrect Default Permissions	[email protected]

Affected Products

Product	Versions
canonical snapd	< 2.54.3
CPE cpe:2.3:a:canonical:snapd:::::::: Remediation No remediation found in references.
canonical ubuntu linux	18.04 20.04 21.10
CPE cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts::: cpe:2.3:o:canonical:ubuntu_linux:20.04::::lts::: cpe:2.3:o:canonical:ubuntu_linux:21.10:::::::* Remediation No remediation found in references.

Change History

4 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Feb 25, 2022	Initial Analysis	[email protected]