Bug 2003649 (CVE-2021-3802)

Summary:	CVE-2021-3802 udisks2: insecure defaults in user-accessible mount helpers allow for a DoS
Product:	[Other] Security Response	Reporter:	Marian Rehak <mrehak>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	gnome-sig, saroy, tbzatek, vtrefny
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	udisks-2.9.4	Doc Type:	If docs needed, set a value
Doc Text:	A vulnerability found in udisks2. This flaw allows an attacker to input a specially crafted image file/USB leading to kernel panic. The highest threat from this vulnerability is to system availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-05-11 04:15:29 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:	2003650, 2004422, 2004423
Bug Blocks:	2003653, 2017003, 2027620

Description Marian Rehak 2021-09-13 11:48:56 UTC

Several user-accessible mount helpers use insecure defaults which allow ext2/3/4 file systems to cause a denial of service (kernel panic) upon mounting a crafted image.  This is especially relevant when mounts can be caused by unprivileged users or are configured to happen automatically and completely unauthorized.

External Reference:

https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2021-045.txt

Comment 1 Marian Rehak 2021-09-13 11:49:16 UTC

Created udisks2 tracking bugs for this issue:

Affects: fedora-all [bug 2003650]

Comment 7 Marian Rehak 2021-09-15 09:28:56 UTC

Copyright license of original report:
https://creativecommons.org/licenses/by/3.0/deed.en

Comment 9 Tomáš Bžatek 2021-10-04 12:16:38 UTC

Fix available upstream as part of the udisks-2.9.4 release: https://github.com/storaged-project/udisks/releases/tag/udisks-2.9.4

Comment 10 errata-xmlrpc 2022-05-10 13:39:15 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2022:1820 https://access.redhat.com/errata/RHSA-2022:1820

Comment 11 Product Security DevOps Team 2022-05-11 04:15:27 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-3802