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Category:   Application (Generic)  >   X Vendors:   X.org
(OpenBSD Issues Fix) X ShmPutImage() Integer Overflow Lets Local Users and Remote Authenticated Users View Arbitrary Memory Contents
SecurityTracker Alert ID:  1020525
SecurityTracker URL:  http://securitytracker.com/id/1020525
CVE Reference:   CVE-2008-1379   (Links to External Site)
Date:  Jul 18 2008
Impact:   Disclosure of system information, Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): X11R7.3
Description:   A vulnerability was reported in the X Window System. A local user or remote authenticated user can view arbitrary memory contents on the target system.

A local user or a remote authenticated user can send specially crafted data to trigger an integer overflow in the processing of ShmPutImage() requests and allow the user to view arbitrary X server memory locations.

The vendor was notified on March 26, 2008.

regenrecht reported this vulnerability via iDefense.

Impact:   A local user or remote authenticated user can view arbitrary X server memory contents on the target system.
Solution:   OpenBSD has issued the following patches:

ftp://ftp.openbsd.org/pub/OpenBSD/patches/4.2/common/012_xorg2.patch
ftp://ftp.openbsd.org/pub/OpenBSD/patches/4.3/common/003_xorg.patch

The OpenBSD advisories are available at:

http://www.openbsd.org/errata42.html
http://www.openbsd.org/errata43.html

Vendor URL:  x.org/ (Links to External Site)
Cause:   Access control error, Boundary error
Underlying OS:  UNIX (OpenBSD)
Underlying OS Comments:  4.2, 4.3

Message History:   This archive entry is a follow-up to the message listed below.
Jun 11 2008 X ShmPutImage() Integer Overflow Lets Local Users and Remote Authenticated Users View Arbitrary Memory Contents



 Source Message Contents



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