The SProcXFixesSelectSelectionInput function in the XFixes extension in X.Org X Window System (aka X11 or X) X11R6.8.0 and X.Org Server (aka xserver and xorg-server) before 1.16.3 allows remote authenticated users to cause a denial of service (out-of-bounds read or write) or possibly execute arbitrary code via a crafted length value.

The Oracle Secure Global Desktop installed on the remote host is version 4.63 / 4.71 / 5.1 / 5.2. It is, therefore, affected by the following vulnerabilities :

  - A security bypass vulnerability exists in Kerberos 5 due     to a failure to properly determine the acceptability of     checksums. A remote attacker can exploit this to forge     tokens or gain privileges by using an unkeyed checksum.
    (CVE-2010-1324)

  - A NULL pointer deference flaw exists in the function     bdfReadCharacters() in file bdfread.c of the X.Org     libXfont module due to improper handling of non-readable     character bitmaps. An authenticated, remote attacker,     using a crafted BDF font file, can exploit this to     cause a denial of service or execute arbitrary code.
    (CVE-2015-1803)

  - An out-of-bounds read/write error exists in the     SProcXFixesSelectSelectionInput() function in the     XFixes extension. A remote, authenticated attacker,     using a crafted length value, can exploit this to     cause a denial of service or execute arbitrary code.
    (CVE-2014-8102)

  - A remote attacker, by using a crafted string length     value in an XkbSetGeometry request, can gain access to     sensitive information from process memory or cause a     denial of service. (CVE-2015-0255)

  - An invalid read error exists in the ASN1_TYPE_cmp()     function due to improperly performed boolean-type     comparisons. A remote attacker can exploit this, via a     crafted X.509 certificate to an endpoint that uses the     certificate-verification feature, to cause an invalid     read operation, resulting in a denial of service.
    (CVE-2015-0286)

  - A denial of service vulnerability exists in Apache     Tomcat due to improper handling of HTTP responses     that occurs before finishing reading an entire request     body. A remote attacker can exploit this by using a     crafted series of aborted upload attempts.
    (CVE-2014-0230)

  - A denial of service vulnerability exists in Apache     Tomcat in ChunkedInputFilter.java due to improper     handling of attempts to read data after an error has     occurred. A remote attacker can exploit this by     streaming data with malformed chunked-transfer     encoding. (CVE-2014-0227)

  - A NULL pointer dereference flaw exists in the     dtls1_get_record() function when handling DTLS messages.
    A remote attacker, using a specially crafted DTLS     message, can cause a denial of service. (CVE-2014-3571)

  - An unspecified flaw exists that is related to the     JServer subcomponent. A remote attacker can exploit this     to impact confidentiality and integrity. No further     details have been provided. (CVE-2015-2581)

The remote host is affected by the vulnerability described in GLSA-201504-06 (X.Org X Server: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in X.Org X Server. Please       review the CVE identifiers referenced below for details.
  Impact :

    A remote attacker could possibly execute arbitrary code with the       privileges of the process or cause a Denial of Service condition.
  Workaround :

    There is no known workaround at this time.

This X.Org update fixes the following security issues :

  - denial of service due to unchecked malloc in client     authentication (CVE-2014-8091)

  - integer overflows calculating memory needs for requests:
    CVE-2014-8092: X11 core protocol requests CVE-2014-8093:
    GLX extension CVE-2014-8094: DRI2 extension

  - out of bounds access due to not validating length or     offset values in requests: CVE-2014-8095: XInput     extension CVE-2014-8096: XC-MISC extension     CVE-2014-8097: DBE extension CVE-2014-8098: GLX     extension CVE-2014-8099: XVideo extension CVE-2014-8100:
    Render extension CVE-2014-8101: RandR extension     CVE-2014-8102: XFixes extension CVE-2014-8103: DRI3 and     Present extensions

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Updated x11-server packages fix security vulnerabilities :

Ilja van Sprundel of IOActive discovered several security issues in the X.org X server, which may lead to privilege escalation or denial of service (CVE-2014-8091, CVE-2014-8092, CVE-2014-8093, CVE-2014-8094, CVE-2014-8095, CVE-2014-8096, CVE-2014-8097, CVE-2014-8098, CVE-2014-8099, CVE-2014-8100, CVE-2014-8101, CVE-2014-8102).

Olivier Fourdan from Red Hat has discovered a protocol handling issue in the way the X server code base handles the XkbSetGeometry request, where the server trusts the client to send valid string lengths. A malicious client with string lengths exceeding the request length can cause the server to copy adjacent memory data into the XKB structs.
This data is then available to the client via the XkbGetGeometry request. This can lead to information disclosure issues, as well as possibly a denial of service if a similar request can cause the server to crash (CVE-2015-0255).

Andreas Cord-Landwehr reported an issue where the X.Org Xserver would often crash with an arithmetic exception when maximizing application windows.

This issue (CVE-2015-3418) is a regression which got introduced by fixing CVE-2014-8092. The above referenced version of xorg-server in Debian squeeze-lts fixes this regression in the following way :

The length checking code validates PutImage height and byte width by making sure that byte-width >= INT32_MAX / height. If height is zero, this generates a divide by zero exception. Allow zero height requests explicitly, bypassing the INT32_MAX check (in dix/dispatch.c).

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

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)

The XOrg X11 server was updated to fix 12 security issues :

  - Denial of service due to unchecked malloc in client     authentication. (CVE-2014-8091)

  - Integer overflows calculating memory needs for requests.
    (CVE-2014-8092)

  - Integer overflows calculating memory needs for requests     in GLX extension. (CVE-2014-8093)

  - Integer overflows calculating memory needs for requests     in DRI2 extension. (CVE-2014-8094)

  - Out of bounds access due to not validating length or     offset values in requests in XInput extension.
    (CVE-2014-8095)

  - Out of bounds access due to not validating length or     offset values in requests in XC-MISC extension.
    (CVE-2014-8096)

  - Out of bounds access due to not validating length or     offset values in requests in DBE extension.
    (CVE-2014-8097)

  - Out of bounds access due to not validating length or     offset values in requests in GLX extension.
    (CVE-2014-8098)

  - Out of bounds access due to not validating length or     offset values in requests in XVideo extension.
    (CVE-2014-8099)

  - Out of bounds access due to not validating length or     offset values in requests in Render extension.
    (CVE-2014-8100)

  - Out of bounds access due to not validating length or     offset values in requests in RandR extension.
    (CVE-2014-8101)

  - Out of bounds access due to not validating length or     offset values in requests in XFixes extension     (CVE-2014-8102). Additionally, these non-security issues     were fixed :

  - Fix crash in RENDER protocol, PanoramiX wrappers.
    (bnc#864911)

  - Some formats used for pictures did not work with the     chosen framebuffer format. (bnc#886213)

This X.Org update fixes the following security and non security issues :

  - Add and update security patches. (bnc#907268,     CVE-2014-8091, CVE-2014-8092, CVE-2014-8093,     CVE-2014-8094, CVE-2014-8095, CVE-2014-8096,     CVE-2014-8097, CVE-2014-8098, CVE-2014-8099,     CVE-2014-8100, CVE-2014-8101, CVE-2014-8102,     CVE-2014-8103)     http://lists.x.org/archives/xorg-announce/2014-December/     002501.html

  - Fixes rendering of some icewm and xfwm themes.
    (bnc#908258, bnc#856931)

New xorg-server packages are available for Slackware 14.1 and
-current to fix security issues.

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)

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)

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)

Updated xorg-x11-server packages that fix multiple security issues are now available for Red Hat Enterprise Linux 6 and 7.

Red Hat Product Security has rated this update as having Important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

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.

Updated xorg-x11-server packages that fix multiple security issues are now available for Red Hat Enterprise Linux 5.

Red Hat Product Security has rated this update as having Important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

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)

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)

All xorg-x11-server users are advised to upgrade to these updated packages, which contain backported patches to correct these issues.

From Red Hat Security Advisory 2014:1983 :

Updated xorg-x11-server packages that fix multiple security issues are now available for Red Hat Enterprise Linux 6 and 7.

Red Hat Product Security has rated this update as having Important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

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.

From Red Hat Security Advisory 2014:1982 :

Updated xorg-x11-server packages that fix multiple security issues are now available for Red Hat Enterprise Linux 5.

Red Hat Product Security has rated this update as having Important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

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)

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)

All xorg-x11-server users are advised to upgrade to these updated packages, which contain backported patches to correct these issues.

Alan Coopersmith reports :

Ilja van Sprundel, a security researcher with IOActive, has discovered a large number of issues in the way the X server code base handles requests from X clients, and has worked with X.Org's security team to analyze, confirm, and fix these issues.

The vulnerabilities could be exploited to cause the X server to access uninitialized memory or overwrite arbitrary memory in the X server process. This can cause a denial of service (e.g., an X server segmentation fault), or could be exploited to achieve arbitrary code execution.

The GLX extension to the X Window System allows an X client to send X protocol to the X server, to request that the X server perform OpenGL rendering on behalf of the X client. This is known as 'GLX indirect rendering', as opposed to 'GLX direct rendering' where the X client submits OpenGL rendering commands directly to the GPU, bypassing the X server and avoiding the X server code for GLX protocol handling.

Most GLX indirect rendering implementations share some common ancestry, dating back to 'Sample Implementation' code from Silicon Graphics, Inc (SGI), which SGI originally commercially licensed to other Unix workstation and graphics vendors, and later released as open source, so those vulnerabilities may affect other licensees of SGI's code base beyond those running code from the X.Org Foundation or the XFree86 Project.

Ilja van Sprundel of IOActive discovered several security issues in the X.org X server, which may lead to privilege escalation or denial of service.

Ilja van Sprundel discovered a multitude of security issues in the X.Org X server. An attacker able to connect to an X server, either locally or remotely, could use these issues to cause the X server to crash or execute arbitrary code resulting in possible privilege escalation.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
84795	Oracle Secure Global Desktop Multiple Vulnerabilities (July 2015 CPU)	Nessus	Misc.	high
84071	GLSA-201504-06 : X.Org X Server: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	medium
83664	SUSE SLED12 / SLES12 Security Update : xorg-x11-server (SUSE-SU-2015:0047-1)	Nessus	SuSE Local Security Checks	medium
82372	Mandriva Linux Security Advisory : x11-server (MDVSA-2015:119)	Nessus	Mandriva Local Security Checks	medium
82103	Debian DLA-120-2 : xorg-server regression update	Nessus	Debian Local Security Checks	high
80557	Amazon Linux AMI : xorg-x11-server (ALAS-2015-470)	Nessus	Amazon Linux Local Security Checks	medium
80547	SuSE 11.3 Security Update : xorg-x11-server (SAT Patch Number 10108)	Nessus	SuSE Local Security Checks	medium
80275	openSUSE Security Update : xorg-x11-server (openSUSE-SU-2014:1719-1)	Nessus	SuSE Local Security Checks	medium
80206	Slackware 14.1 / current : xorg-server (SSA:2014-356-03)	Nessus	Slackware Local Security Checks	medium
80018	Scientific Linux Security Update : xorg-x11-server on SL6.x, SL7.x i386/x86_64 (20141211)	Nessus	Scientific Linux Local Security Checks	medium
80017	Scientific Linux Security Update : xorg-x11-server on SL5.x i386/x86_64 (20141211)	Nessus	Scientific Linux Local Security Checks	medium
80011	RHEL 6 / 7 : xorg-x11-server (RHSA-2014:1983)	Nessus	Red Hat Local Security Checks	medium
80010	RHEL 5 : xorg-x11-server (RHSA-2014:1982)	Nessus	Red Hat Local Security Checks	medium
80001	Oracle Linux 6 / 7 : xorg-x11-server (ELSA-2014-1983)	Nessus	Oracle Linux Local Security Checks	medium
80000	Oracle Linux 5 : xorg-x11-server (ELSA-2014-1982)	Nessus	Oracle Linux Local Security Checks	medium
79955	FreeBSD : xserver -- multiple issue with X client request handling (27b9b2f0-8081-11e4-b4ca-bcaec565249c)	Nessus	FreeBSD Local Security Checks	medium
79882	Debian DSA-3095-1 : xorg-server - security update	Nessus	Debian Local Security Checks	medium
79879	CentOS 6 / 7 : xorg-x11-server (CESA-2014:1983)	Nessus	CentOS Local Security Checks	medium
79878	CentOS 5 : xorg-x11-server (CESA-2014:1982)	Nessus	CentOS Local Security Checks	medium
79852	Ubuntu 14.04 LTS : X.Org X server vulnerabilities (USN-2436-1)	Nessus	Ubuntu Local Security Checks	high

Detections

Analytics

CVE-2014-8102

critical

Tenable Plugins

high

medium

medium

medium

high

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

high