Bug 1927428 - snapd: Access restriction could be bypassed by container management snaps
Summary: snapd: Access restriction could be bypassed by container management snaps
Keywords:
Status: CLOSED UPSTREAM
Alias: None
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1927431 1927432
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-02-10 17:25 UTC by Pedro Sampaio
Modified: 2021-02-10 22:09 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2021-02-10 22:09:58 UTC
Embargoed:

Attachments (Terms of Use)

Description Pedro Sampaio 2021-02-10 17:25:46 UTC 
Snapd did not correctly specify cgroup delegation when generating systemd service units for various container management snaps. This could allow a local attacker to escalate privileges via access to arbitrary devices of the container host from within a compromised or malicious container.

References:

https://packetstormsecurity.com/files/161359/USN-4728-1.txt
Comment 1 Pedro Sampaio 2021-02-10 17:27:38 UTC 
Created snapd tracking bugs for this issue:

Affects: epel-all [bug 1927432]
Affects: fedora-all [bug 1927431]
Comment 2 Product Security DevOps Team 2021-02-10 22:09:58 UTC 
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.
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