Bug 1168691 (CVE-2014-8094) - CVE-2014-8094 xorg-x11-server: integer overflow in DRI2 extension function ProcDRI2GetBuffers()
Summary: CVE-2014-8094 xorg-x11-server: integer overflow in DRI2 extension function Pr...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2014-8094
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1170916 1170917 1170918 1170919
Blocks: 1168310
TreeView+ depends on / blocked
 
Reported: 2014-11-27 15:37 UTC by Vasyl Kaigorodov
Modified: 2021-02-17 05:57 UTC (History)
6 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
An integer overflow flaw was found in the way the X.Org server calculated memory requirements for certain DRI2 extension requests. A malicious, authenticated client could use this flaw to crash the X.Org server.
Clone Of:
Environment:
Last Closed: 2014-12-11 20:56:31 UTC
Embargoed:

Attachments (Terms of Use)
0006-dri2_integer_overflow_in_ProcDRI2GetBuffers_CVE-2014-8094.patch (1.25 KB, text/plain)
2014-11-27 15:49 UTC, Vasyl Kaigorodov 		no flags Details
View All


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2014:1983 0 normal SHIPPED_LIVE Important: xorg-x11-server security update 2014-12-12 00:41:58 UTC

Description Vasyl Kaigorodov 2014-11-27 15:37:51 UTC 
ProcDRI2GetBuffers() function call do not check that its calculations for how much memory
is needed to handle the client's request have not overflowed, so can
result in out of bounds reads or writes.  These calls all occur only
after a client has successfully authenticated itself.

Introduced in xorg-server-1.7.0 (2009).
Comment 1 Vasyl Kaigorodov 2014-11-27 15:49:03 UTC 
Created attachment 962135 [details]
0006-dri2_integer_overflow_in_ProcDRI2GetBuffers_CVE-2014-8094.patch
Comment 2 Huzaifa S. Sidhpurwala 2014-12-05 05:46:05 UTC 
Authenticated client can cause integer overflow on the server which later results in OOB read and consequent crash.
Comment 4 Vincent Danen 2014-12-09 20:17:46 UTC 
External References:

http://www.x.org/wiki/Development/Security/Advisory-2014-12-09/
Comment 5 errata-xmlrpc 2014-12-11 19:42:21 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7
  Red Hat Enterprise Linux 6

Via RHSA-2014:1983 https://rhn.redhat.com/errata/RHSA-2014-1983.html
Note You need to log in before you can comment on or make changes to this bug.