Bug 722876 (CVE-2011-0460)

Summary:	CVE-2011-0460 kbd: /etc/init.d/kbd dumps state to /dev/shm/defkeymap.map on shutdown
Product:	[Other] Security Response	Reporter:	Jan Lieskovsky <jlieskov>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	vcrhonek
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:	2011-07-18 11:06:28 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:

Description Jan Lieskovsky 2011-07-18 10:23:41 UTC

It was found that the kbd init script wrote a file to /dev/shm during shut-down action. A local attacker could use this flaw to conduct symlink attacks (cause corruption of arbitrary system files).

References:
[1] https://bugzilla.novell.com/show_bug.cgi?id=663898
[2] http://lists.opensuse.org/opensuse-updates/2011-04/msg00053.html

Comment 1 Jan Lieskovsky 2011-07-18 10:25:34 UTC

This issue did NOT affect the versions of the kbd package, as shipped with
Red Hat Enterprise Linux 4, 5, or 6.

--

This issue did NOT affect the versions of the kbd package, as shipped with Fedora release of 14 and 15.

Comment 2 Jan Lieskovsky 2011-07-18 10:28:08 UTC

Statement:

Not vulnerable. This issue did not affect the versions of kbd as shipped with
Red Hat Enterprise Linux 4, 5, or 6 as they do not include the affected script.