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Red Hat Enterprise Linux 6 and 7 RHSA-2014:1983-01 Critical: Xorg DoS

red hat
Calendar Grey December 11, 2014
Dist Redhat Esm H88
==================================================================== Red Hat Security Advisory Synop
Updated xorg-x11-server packages that fix multiple security issues are now available for Red Hat Enterprise Linux 6 and 7

Solution

Before applying this update, make sure all previously released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/articles/11258

Summary

X.Org is an open source implementation of the X Window System. It provides the basic low-level functionality that full-fledged graphical user interfaces are designed upon.
Multiple integer overflow flaws and out-of-bounds write flaws were found in the way the X.Org server calculated memory requirements for certain X11 core protocol and GLX extension requests. A malicious, authenticated client could use either of these flaws to crash the X.Org server or, potentially, execute arbitrary code with root privileges. (CVE-2014-8092, CVE-2014-8093, CVE-2014-8098)
It was found that the X.Org server did not properly handle SUN-DES-1 (Secure RPC) authentication credentials. A malicious, unauthenticated client could use this flaw to crash the X.Org server by submitting a specially crafted authentication request. (CVE-2014-8091)
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, or leak memory contents to the client. (CVE-2014-8097)
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. (CVE-2014-8094)
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. (CVE-2014-8095, CVE-2014-8096, CVE-2014-8099, CVE-2014-8100, CVE-2014-8101, CVE-2014-8102, CVE-2014-8103)
All xorg-x11-server users are advised to upgrade to these updated packages, which contain backported patches to correct these issues.

Topics%20covered

Topics Covered

security advisory denial of service security issue update red hat important xorg-x11-server

References

https://access.redhat.com/security/cve/CVE-2014-8091 https://access.redhat.com/security/cve/CVE-2014-8092 https://access.redhat.com/security/cve/CVE-2014-8093 https://access.redhat.com/security/cve/CVE-2014-8094 https://access.redhat.com/security/cve/CVE-2014-8095 https://access.redhat.com/security/cve/CVE-2014-8096 https://access.redhat.com/security/cve/CVE-2014-8097 https://access.redhat.com/security/cve/CVE-2014-8098 https://access.redhat.com/security/cve/CVE-2014-8099 https://access.redhat.com/security/cve/CVE-2014-8100 https://access.redhat.com/security/cve/CVE-2014-8101 https://access.redhat.com/security/cve/CVE-2014-8102 https://access.redhat.com/security/cve/CVE-2014-8103 https://access.redhat.com/security/updates/classification#important https://www.x.org/wiki/Development/Security/Advisory-2014-12-09/

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source: xorg-x11-server-1.15.0-25.el6_6.src.rpm
i386: xorg-x11-server-Xephyr-1.15.0-25.el6_6.i686.rpm xorg-x11-server-Xorg-1.15.0-25.el6_6.i686.rpm xorg-x11-server-common-1.15.0-25.el6_6.i686.rpm xorg-x11-server-debuginfo-1.15.0-25.el6_6.i686.rpm
x86_64: xorg-x11-server-Xephyr-1.15.0-25.el6_6.x86_64.rpm xorg-x11-server-Xorg-1.15.0-25.el6_6.x86_64.rpm xorg-x11-server-common-1.15.0-25.el6_6.x86_64.rpm xorg-x11-server-debuginfo-1.15.0-25.el6_6.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
i386: xorg-x11-server-Xdmx-1.15.0-25.el6_6.i686.rpm xorg-x11-server-Xnest-1.15.0-25.el6_6.i686.rpm xorg-x11-server-Xvfb-1.15.0-25.el6_6.i686.rpm xorg-x11-server-debuginfo-1.15.0-25.el6_6.i686.rpm xorg-x11-server-devel-1.15.0-25.el6_6.i686.rpm
noarch: xorg-x11-server-source-1.15.0-25.el6_6.noarch.rpm
x86_64: xorg-x11-server-Xdmx-1.15.0-25.el6_6.x86_64.rpm xorg-x11-server-Xnest-1.15.0-25.el6_6.x86_64.rpm xorg-x11-server-Xvfb-1.15.0-25.el6_6.x86_64.rpm xorg-x11-server-debuginfo-1.15.0-25.el6_6.i686.rpm xorg-x11-server-debuginfo-1.15.0-25.el6_6.x86_64.rpm xorg-x11-server-devel-1.15.0-25.el6_6.i686.rpm xorg-x11-server-devel-1.15.0-25.el6_6.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
Source:

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2014:1983-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2014:1983.html
Issue date: 2014-12-11

Topic

Updated xorg-x11-server packages that fix multiple security issues are nowavailable for Red Hat Enterprise Linux 6 and 7.Red Hat Product Security has rated this update as having Important securityimpact. Common Vulnerability Scoring System (CVSS) base scores, which givedetailed severity ratings, are available for each vulnerability from theCVE links in the References section.

Topics%20covered

Topics Covered

security advisory denial of service security issue update red hat important xorg-x11-server

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64

Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, noarch, x86_64

Red Hat Enterprise Linux HPC Node Optional (v. 6) - noarch, x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server (v. 7) - ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 6) - i386, noarch, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - noarch, ppc64, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, noarch, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - noarch, x86_64

Bugs Fixed

1168680 - CVE-2014-8091 xorg-x11-server: denial of service due to unchecked malloc in client authentication

1168684 - CVE-2014-8092 xorg-x11-server: integer overflow in X11 core protocol requests when calculating memory needs for requests

1168688 - CVE-2014-8093 xorg-x11-server: integer overflow in GLX extension requests when calculating memory needs for requests

1168691 - CVE-2014-8094 xorg-x11-server: integer overflow in DRI2 extension function ProcDRI2GetBuffers()

1168694 - CVE-2014-8095 xorg-x11-server: out of bounds access due to not validating length or offset values in XInput extension

1168700 - CVE-2014-8096 xorg-x11-server: out of bounds access due to not validating length or offset values in XC-MISC extension

1168705 - CVE-2014-8097 xorg-x11-server: out of bounds access due to not validating length or offset values in DBE extension

1168707 - CVE-2014-8098 xorg-x11-server: out of bounds access due to not validating length or offset values in GLX extension

1168710 - CVE-2014-8099 xorg-x11-server: out of bounds access due to not validating length or offset values in XVideo extension

1168711 - CVE-2014-8100 xorg-x11-server: out of bounds access due to not validating length or offset values in Render extension

1168713 - CVE-2014-8101 xorg-x11-server: out of bounds access due to not validating length or offset values in RandR extension

Read the Full Advisory

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