Bug 969518 (CVE-2013-2852)

Summary:	CVE-2013-2852 kernel: b43: format string leaking into error msgs
Product:	[Other] Security Response	Reporter:	Petr Matousek <pmatouse>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	bhu, dhoward, fhrbata, iboverma, jkacur, kernel-mgr, lgoncalv, linville, mcressma, nobody, rvrbovsk, security-response-team, williams
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-20 10:39:13 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:	971387, 971389, 971390, 971391, 971665, 998412
Bug Blocks:	969516

Description Petr Matousek 2013-05-31 16:20:43 UTC

The module parameter "fwpostfix" is userspace controllable, unfiltered, and is used to define the firmware filename. b43_do_request_fw() populates ctx->errors[] on error, containing the firmware filename. b43err() parses its arguments as a format string. For systems with b43 hardware, this could lead to a uid-0 to ring-0 escalation.

Acknowledgements:

Red Hat would like to thank Kees Cook for reporting this issue.

Comment 3 Petr Matousek 2013-06-06 11:31:00 UTC

Statement:

This issue does not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5.

This issue does affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 6, and Red Hat Enterprise MRG. Future updates for Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG may address this issue.

Comment 6 Petr Matousek 2013-06-07 06:05:37 UTC

Created kernel tracking bugs for this issue

Affects: fedora-all [bug 971665]

Comment 7 Petr Matousek 2013-06-07 09:12:11 UTC

Upstream patch:

http://git.kernel.org/cgit/linux/kernel/git/linville/wireless.git/commit/?id=9538cbaab6e8b8046039b4b2eb6c9d614dc782bd

Comment 8 Fedora Update System 2013-06-13 06:05:22 UTC

kernel-3.9.5-201.fc18 has been pushed to the Fedora 18 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 9 Fedora Update System 2013-06-14 04:51:31 UTC

kernel-3.9.5-301.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 10 Fedora Update System 2013-07-01 01:33:28 UTC

kernel-3.9.8-100.fc17 has been pushed to the Fedora 17 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 11 errata-xmlrpc 2013-07-16 17:30:50 UTC

This issue has been addressed in following products:

  OpenStack 3 for RHEL 6

Via RHSA-2013:1080 https://rhn.redhat.com/errata/RHSA-2013-1080.html

Comment 12 errata-xmlrpc 2013-07-16 18:38:11 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2013:1051 https://rhn.redhat.com/errata/RHSA-2013-1051.html

Comment 14 errata-xmlrpc 2013-09-16 17:05:38 UTC

This issue has been addressed in following products:

  MRG for RHEL-6 v.2

Via RHSA-2013:1264 https://rhn.redhat.com/errata/RHSA-2013-1264.html

Comment 15 errata-xmlrpc 2013-10-22 17:02:58 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6.3 EUS - Server and Compute Node Only

Via RHSA-2013:1450 https://rhn.redhat.com/errata/RHSA-2013-1450.html