CVE-2024-1724

Public Exploit
snapd allows $HOME/bin symlink

Description

In snapd versions prior to 2.62, when using AppArmor for enforcement of sandbox permissions, snapd failed to restrict writes to the $HOME/bin path. In Ubuntu, when this path exists, it is automatically added to the users PATH. An attacker who could convince a user to install a malicious snap which used the 'home' plug could use this vulnerability to install arbitrary scripts into the users PATH which may then be run by the user outside of the expected snap sandbox and hence allow them to escape confinement.

Category

6.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.01%
Third-Party Advisory mcphail.uk
Affected: Canonical snap
Published at:
Updated at:

References

Link Tags
https://github.com/snapcore/snapd/commit/aa191f97713de8dc3ce3ac818539f0b976eb8ef6 patch
https://gld.mcphail.uk/posts/explaining-cve-2024-1724/ third party advisory exploit technical description
https://github.com/snapcore/snapd/pull/13689 patch issue tracking

Frequently Asked Questions

What is the severity of CVE-2024-1724?
CVE-2024-1724 has been scored as a medium severity vulnerability.
How to fix CVE-2024-1724?
To fix CVE-2024-1724, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-1724 being actively exploited in the wild?
It is possible that CVE-2024-1724 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-1724?
CVE-2024-1724 affects Canonical snap.
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