Bug 1168714 – CVE-2014-8102 xorg-x11-server: out of bounds access due to not validating length or offset values in XFixes extension

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Bug 1168714 - (CVE-2014-8102) CVE-2014-8102 xorg-x11-server: out of bounds access due to not validating length or offset values in XFixes extension

Summary:	CVE-2014-8102 xorg-x11-server: out of bounds access due to not validating len...

Status:	CLOSED ERRATA

Aliases:	CVE-2014-8102

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=moderate,public=20141209,repor...
Keywords:	Security

Depends On:	1170916 1170917 1170918 1170919 1170932
Blocks:	1168310
	Show dependency tree / graph

Reported:	2014-11-27 11:07 EST by Vasyl Kaigorodov
Modified:	2014-12-12 03:49 EST (History)
CC List:	6 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:	Multiple out-of-bounds access flaws were found in the way the X.Org server calculated memory requirements for certain requests. A malicious, authenticated client could use either of these flaws to crash the X.Org server.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2014-12-11 15:58:26 EST
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
0016-xfixes_unvalidated_length_in_SProcXFixesSelectSelectionInput_CVE-2014-8102.patch (844 bytes, text/plain) 2014-11-27 11:07 EST, Vasyl Kaigorodov	no flags	Details
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2014:1982	normal	SHIPPED_LIVE	Important: xorg-x11-server security update	2014-12-11 17:34:45 EST
Red Hat Product Errata	RHSA-2014:1983	normal	SHIPPED_LIVE	Important: xorg-x11-server security update	2014-12-11 19:41:58 EST

Groups: None (edit)

Description Vasyl Kaigorodov 2014-11-27 11:07:24 EST

SProcXFixesSelectSelectionInput() function call in XFixes extension
do not check that the lengths and/or indexes sent by the
client are within the bounds specified by the caller or the bounds of
the memory allocated to hold the request read from the client, so could
read or write past the bounds of allocated memory while processing the
request. These calls all occur only after a client has successfully
authenticated itself.

Comment 1 Vasyl Kaigorodov 2014-11-27 11:07:39 EST

Created attachment 962153 [details]
0016-xfixes_unvalidated_length_in_SProcXFixesSelectSelectionInput_CVE-2014-8102.patch

Comment 2 Huzaifa S. Sidhpurwala 2014-12-05 01:08:52 EST

OOB read leading to X server crash.

Comment 5 Vincent Danen 2014-12-09 15:17:46 EST

External References:

http://www.x.org/wiki/Development/Security/Advisory-2014-12-09/

Comment 6 errata-xmlrpc 2014-12-11 12:35:23 EST

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 5

Via RHSA-2014:1982 https://rhn.redhat.com/errata/RHSA-2014-1982.html

Comment 7 errata-xmlrpc 2014-12-11 14:42:39 EST

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

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