Bug 959048 (CVE-2013-1983)

Summary: CVE-2013-1983 libXfixes: Integer overflow leading to heap-based buffer overflow
Product: [Other] Security Response Reporter: Huzaifa S. Sidhpurwala <huzaifas>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: jlieskov, jrusnack, kem, peter.hutterer, security-response-team
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Fixed In Version: libXfixes 5.0.1 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2014-10-16 06:08:28 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 966694, 1078024    
Bug Blocks: 959130, 1101912    

Description Huzaifa S. Sidhpurwala 2013-05-03 05:08:21 UTC
An integer overflow leading to a heap-based buffer overflow was found in the XFixesGetCursorImage() function of the libXfixes library, an X.Org X11 libXext runtime library. When a X client is connected to a malicious X server, (modified to return invalid values), it can cause arbirary code execution with the privileges of the user running the X client.

Comment 1 Peter Hutterer 2013-05-06 01:40:23 UTC
Created attachment 743931 [details]

Comment 2 Peter Hutterer 2013-05-06 01:41:19 UTC
Created attachment 743932 [details]

Comment 5 Jan Lieskovsky 2013-05-23 15:29:12 UTC
Public via:

Comment 7 Jan Lieskovsky 2013-05-23 17:08:20 UTC
This issue affects the versions of the libXfixes package, as shipped with Fedora release of 17 and 18. Please schedule an update.

Comment 8 Jan Lieskovsky 2013-05-23 17:08:59 UTC
Created libXfixes tracking bugs for this issue

Affects: fedora-all [bug 966694]

Comment 9 Jan Lieskovsky 2013-05-23 17:09:29 UTC
External References:


Comment 10 Fedora Update System 2013-05-27 03:30:21 UTC
libXfixes-5.0-6.20130524gitc480fe327.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 11 Huzaifa S. Sidhpurwala 2013-06-05 03:31:30 UTC
This issue affects the version of libXfixes as shipped with Red Hat Enterprise Linux 5 and 6.

Comment 12 Huzaifa S. Sidhpurwala 2013-06-05 03:45:55 UTC

This issue affects the libXfixes package in Red Hat Enterprise Linux 5. Red Hat Product Security has rated this issue as having Moderate security impact. This issue is not planned to be fixed in Red Hat Enterprise Linux 5 as it is now in Production 3 Phase of the support and maintenance life cycle: https://access.redhat.com/support/policy/updates/errata/

Comment 13 Fedora Update System 2013-06-06 01:31:14 UTC
libXfixes-5.0-6.20130524gitc480fe327.fc18 has been pushed to the Fedora 18 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 15 errata-xmlrpc 2014-10-14 05:05:03 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2014:1436 https://rhn.redhat.com/errata/RHSA-2014-1436.html