Vulnerability CVE-2013-6424
Published: 2014-01-18   Modified: 2014-01-19

Description:
Integer underflow in the xTrapezoidValid macro in render/picture.h in X.Org allows context-dependent attackers to cause a denial of service (crash) via a negative bottom value.

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
X -> X server 

 References:
http://lists.opensuse.org/opensuse-updates/2013-12/msg00127.html
http://lists.x.org/archives/xorg-devel/2013-October/037996.html
http://rhn.redhat.com/errata/RHSA-2013-1868.html
http://www.debian.org/security/2013/dsa-2822
http://www.openwall.com/lists/oss-security/2013/12/03/8
http://www.openwall.com/lists/oss-security/2013/12/04/8
http://www.ubuntu.com/usn/USN-2500-1
https://bugs.freedesktop.org/show_bug.cgi?id=67484
https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1197921
https://security.gentoo.org/glsa/201701-64
https://security.gentoo.org/glsa/201710-30
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