CVE-2010-0732: Race Condition
First published: Wed Oct 14 2009(Updated: )
Chris Coulson reported gnome-screensaver is prone to race condition between two subsequent actions -- shaking the unlock dialog and clearing the screen. A local attacker could use this flaw to cause a denial of service (gnome-screensaver crash), which allows physically proximate attackers to access an unattended workstation on which screen locking had been intended. Upstream bug report: <a href="https://bugzilla.gnome.org/show_bug.cgi?id=598476">https://bugzilla.gnome.org/show_bug.cgi?id=598476</a> Upstream patch: <a href="http://git.gnome.org/browse/gnome-screensaver/commit/?id=ab08cc93f2dc6223c8c00bfa1ca4f2d89069dbe0">http://git.gnome.org/browse/gnome-screensaver/commit/?id=ab08cc93f2dc6223c8c00bfa1ca4f2d89069dbe0</a> CVE Request: <a href="http://www.openwall.com/lists/oss-security/2010/02/12/1">http://www.openwall.com/lists/oss-security/2010/02/12/1</a> References: <a href="http://www.heise.de/newsticker/meldung/Gnome-Bildschirmsperre-in-OpenSuse-Linux-wirkungslos-928580.html">http://www.heise.de/newsticker/meldung/Gnome-Bildschirmsperre-in-OpenSuse-Linux-wirkungslos-928580.html</a>
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| GTK | <2.18.5 | |
| GNOME Screensaver | <2.28.1 |
Remedy
http://git.gnome.org/browse/gnome-screensaver/commit/?id=ab08cc93f2dc6223c8c00bfa1ca4f2d89069dbe0
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Reference Links
- http://ftp.gnome.org/pub/gnome/sources/gtk+/2.18/gtk+-2.18.5.news
- http://git.gnome.org/browse/gnome-screensaver/commit/?h=gnome-2-28&id=98f8a22412cf388217fd5b88915eadd274d68520
- http://git.gnome.org/browse/gnome-screensaver/commit/?id=ab08cc93f2dc6223c8c00bfa1ca4f2d89069dbe0
- http://git.gnome.org/browse/gtk+/commit/?id=0748cf563d0d0d03001a62589f13be16a8ec06c1
- http://lists.opensuse.org/opensuse-security-announce/2010-04/msg00001.html
- http://secunia.com/advisories/39317
- http://www.heise.de/newsticker/meldung/Gnome-Bildschirmsperre-in-OpenSuse-Linux-wirkungslos-2-Update-928580.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:109
- http://www.openwall.com/lists/oss-security/2010/02/12/1
- http://www.openwall.com/lists/oss-security/2010/03/05/2
- http://www.openwall.com/lists/oss-security/2010/03/16/9
- http://www.securityfocus.com/bid/38211
- https://bugs.edge.launchpad.net/ubuntu/+source/gnome-screensaver/+bug/446395
- https://bugzilla.gnome.org/show_bug.cgi?id=598476
- https://bugzilla.redhat.com/show_bug.cgi?id=565527
- http://www.heise.de/newsticker/meldung/Gnome-Bildschirmsperre-in-OpenSuse-Linux-wirkungslos-928580.html
- https://access.redhat.com/security/cve/CVE-2010-0732
- https://www.cve.org/CVERecord?id=CVE-2010-0732 https://nvd.nist.gov/vuln/detail/CVE-2010-0732
- https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2010-0732.json
Frequently Asked Questions
What is the severity of CVE-2010-0732?
CVE-2010-0732 is considered a denial of service vulnerability that can cause gnome-screensaver to crash.
How do I fix CVE-2010-0732?
To fix CVE-2010-0732, update gnome-screensaver and GTK to versions above 2.28.1 and 2.18.5 respectively.
Who is affected by CVE-2010-0732?
CVE-2010-0732 affects users of gnome-screensaver versions prior to 2.28.1 and GTK versions prior to 2.18.5.
Can a local attacker exploit CVE-2010-0732?
Yes, a local attacker can exploit CVE-2010-0732 to crash gnome-screensaver and potentially gain unauthorized access.
What is the nature of the flaw in CVE-2010-0732?
The flaw in CVE-2010-0732 is a race condition between the unlock dialog and screen clearing actions.
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