Bug 570330 (CVE-2010-0923)

Summary:	CVE-2010-0923 kdebase: race condition may allow local attackers to bypass screen locking
Product:	[Other] Security Response	Reporter:	Vincent Danen <vdanen>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED CURRENTRELEASE	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	desktop-bugs, rcvalle, than
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
URL:	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2010-0923
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2010-03-04 03:43:23 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:	570331
Bug Blocks:

Description Vincent Danen 2010-03-03 21:45:42 UTC

Common Vulnerabilities and Exposures assigned an identifier CVE-2010-0923 to
the following vulnerability:

Name: CVE-2010-0923
URL: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-0923
Assigned: 20100303
Reference: MLIST:[oss-security] 20100212 CVE Request: KDE screensaver unlock issue similar to GNOME one
Reference: URL: http://marc.info/?l=oss-security&m=126598163422670&w=2
Reference: MLIST:[oss-security] 20100212 Re: CVE Request: KDE screensaver unlock issue similar to GNOME one
Reference: URL: http://marc.info/?l=oss-security&m=126599909614401&w=2
Reference: MLIST:[oss-security] 20100212 Re: Re: CVE Request: KDE screensaver unlock issue similar to GNOME one
Reference: URL: http://marc.info/?l=oss-security&m=126600468622421&w=2
Reference: MLIST:[oss-security] 20100217 Re: Re: CVE Request: KDE screensaver unlock issue similar to GNOME one
Reference: URL: http://www.openwall.com/lists/oss-security/2010/02/17/3
Reference: CONFIRM: http://bugs.kde.org/show_bug.cgi?id=226449
Reference: CONFIRM: http://websvn.kde.org/?revision=1089213&view=revision
Reference: CONFIRM: http://websvn.kde.org/?view=revision&revision=1089241
Reference: CONFIRM: http://websvn.kde.org/trunk/KDE/kdebase/workspace/krunner/lock/lockdlg.cc?r1=1089213&r2=1089212&pathrev=1089213
Reference: CONFIRM: http://www.kde.org/info/security/advisory-20100217-1.txt
Reference: CONFIRM: https://bugs.kde.org/show_bug.cgi?id=217882
Reference: CONFIRM: https://bugzilla.novell.com/show_bug.cgi?id=579280
Reference: SECTRACK:1023641
Reference: URL: http://securitytracker.com/id?1023641
Reference: SECUNIA:38600
Reference: URL: http://secunia.com/advisories/38600
Reference: VUPEN:ADV-2010-0409
Reference: URL: http://www.vupen.com/english/advisories/2010/0409

Race condition in workspace/krunner/lock/lockdlg.cc in the KRunner
lock module in kdebase in KDE SC 4.4.0 allows physically proximate
attackers to bypass KScreenSaver screen locking and access an
unattended workstation by pressing the Enter key at a certain time,
related to multiple forked processes.

Comment 2 Vincent Danen 2010-03-03 21:47:31 UTC

This issue affects all current Fedora versions, and Fedora rawhide, which all contain version 4.4.0.

This issue does not affect earlier versions of KDE.

Comment 3 Vincent Danen 2010-03-04 03:43:23 UTC

This has actually already been corrected:

* Thu Feb 11 2010 Than Ngo <than> - 4.4.0-4
- move xsession desktop files to main package
  (cannot start kde from gdm if kdm not installed)
- Desktop locking crashes (kde#217882#16)