Bug 1814293 (CVE-2020-0556)

Summary:	CVE-2020-0556 bluez: Improper access control in subsystem could result in privilege escalation and DoS
Product:	[Other] Security Response	Reporter:	Michael Kaplan <mkaplan>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	bnocera, darcari, dwmw2, dzickus, gtiwari, hwkernel-mgr, spacewar
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	bluez 5.54	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-09-29 22:00:09 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:	1814294, 1827028, 1827029
Bug Blocks:	1814297

Description Michael Kaplan 2020-03-17 15:05:02 UTC

Improper access control in subsystem could allow unauthenticated user to enable escalation of privilege and denial of service via adjacent access.

Upstream Reference:

https://patchwork.kernel.org/patch/11428317/

Upstream Reference:

https://patchwork.kernel.org/patch/11428319/

Comment 1 Michael Kaplan 2020-03-17 15:05:34 UTC

Created bluez tracking bugs for this issue:

Affects: fedora-all [bug 1814294]

Comment 2 Michael Kaplan 2020-03-17 15:09:04 UTC

External References:

https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00352.html

Comment 5 Huzaifa S. Sidhpurwala 2020-04-23 05:13:03 UTC

Upstream patches:
https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?h=5.54&id=3cccdbab2324086588df4ccf5f892fb3ce1f1787
https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?h=5.54&id=8cdbd3b09f29da29374e2f83369df24228da0ad1

Comment 9 Huzaifa S. Sidhpurwala 2020-05-08 03:44:48 UTC

Mitigation:

Disable Bluetooth.  Instructions on disabling bluetooth in Red Hat Enterprise Linux are available at: https://access.redhat.com/solutions/2682931

Comment 10 errata-xmlrpc 2020-09-29 20:29:23 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:4001 https://access.redhat.com/errata/RHSA-2020:4001

Comment 11 Product Security DevOps Team 2020-09-29 22:00:09 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-2020-0556

Comment 12 errata-xmlrpc 2020-11-04 01:21:47 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:4481 https://access.redhat.com/errata/RHSA-2020:4481