Bug 2056058 (CVE-2021-44731)

Summary:	CVE-2021-44731 snapd: Race condition in snap-confine's setup_private_mount()
Product:	[Other] Security Response	Reporter:	Mauro Matteo Cascella <mcascell>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	go-sig, maciek.borzecki, me, ngompa13
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	snapd 2.54.3	Doc Type:	If docs needed, set a value
Doc Text:	A race condition vulnerability in the snap-confine component (setup_private_mount) of snapd was found by Qualys. This flaw could lead to local privilege escalation from any user to root.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-03-02 20:50:16 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2056059, 2056060
Bug Blocks:

Description Mauro Matteo Cascella 2022-02-18 16:33:35 UTC

A race condition vulnerability in the snap-confine component (setup_private_mount) of snapd was found by Qualys. This flaw could lead to local privilege escalation from any user to root.

Qualys security advisory:
https://www.qualys.com/2022/02/17/cve-2021-44731/oh-snap-more-lemmings.txt

Comment 1 Mauro Matteo Cascella 2022-02-18 16:33:55 UTC

Created snapd tracking bugs for this issue:

Affects: epel-all [bug 2056059]
Affects: fedora-all [bug 2056060]

Comment 2 Product Security DevOps Team 2022-03-02 20:50:15 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.