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CVE-2024-29069

Publication date 14 March 2024

Last updated 6 August 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

4.8 · Medium

Score breakdown

In snapd versions prior to 2.62, snapd failed to properly check the destination of symbolic links when extracting a snap. The snap format is a squashfs file-system image and so can contain symbolic links and other file types. Various file entries within the snap squashfs image (such as icons and desktop files etc) are directly read by snapd when it is extracted. An attacker who could convince a user to install a malicious snap which contained symbolic links at these paths could then cause snapd to write out the contents of the symbolic link destination into a world-readable directory. This in-turn could allow an unprivileged user to gain access to privileged information.

Read the notes from the security team

Status

Package Ubuntu Release Status
snapd 24.04 LTS noble
Fixed 2.62+24.04build1
23.10 mantic Ignored
22.04 LTS jammy
Fixed 2.63+22.04ubuntu0.1
20.04 LTS focal
Fixed 2.63+20.04ubuntu0.1
18.04 LTS bionic
Vulnerable
16.04 LTS xenial
Vulnerable
14.04 LTS trusty Ignored

Notes

sarnold

CWE-610 CAPEC-132

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
snapd

Severity score breakdown

Parameter Value
Base score 4.8 · Medium
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction Required
Scope Unchanged
Confidentiality Low
Integrity impact Low
Availability impact Low
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L

References

Related Ubuntu Security Notices (USN)

Other references