9.3 - RHSA-2011:1154

Executive Summary

Summary
Title	libXfont security update

Informations
Name	RHSA-2011:1154	First vendor Publication	2011-08-11
Vendor	RedHat	Last vendor Modification	2011-08-11
Severity (Vendor)	Important	Revision	01

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score	NA
Base Score	NA	Environmental Score	NA
impact SubScore	NA	Temporal Score	NA
Exploitabality Sub Score	NA

Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:C/I:C/A:C)
Cvss Base Score	9.3	Attack Range	Network
Cvss Impact Score	10	Attack Complexity	Medium
Cvss Expoit Score	8.6	Authentication	None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Problem Description:

Updated libXfont packages that fix one security issue are now available for Red Hat Enterprise Linux 5 and 6.

The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

2. Relevant releases/architectures:

RHEL Desktop Workstation (v. 5 client) - i386, x86_64 Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64 Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64 Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

3. Description:

The libXfont packages provide the X.Org libXfont runtime library. X.Org is an open source implementation of the X Window System.

A buffer overflow flaw was found in the way the libXfont library, used by the X.Org server, handled malformed font files compressed using UNIX compress. A malicious, local user could exploit this issue to potentially execute arbitrary code with the privileges of the X.Org server. (CVE-2011-2895)

Users of libXfont should upgrade to these updated packages, which contain a backported patch to resolve this issue. All running X.Org server instances must be restarted for the update to take effect.

4. 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/kb/docs/DOC-11259

5. Bugs fixed (http://bugzilla.redhat.com/):

725760 - CVE-2011-2895 libXfont: LZW decompression heap corruption / infinite loop 727624 - CVE-2011-2895 BSD compress LZW decoder buffer overflow

Original Source

Url : https://rhn.redhat.com/errata/RHSA-2011-1154.html

CWE : Common Weakness Enumeration

%	Id	Name
100 %	CWE-119	Failure to Constrain Operations within the Bounds of a Memory Buffer

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:14612

Oval ID:	oval:org.mitre.oval:def:14612
Title:	USN-1191-1 -- libXfont vulnerability
Description:	libxfont: X11 font rasterisation library libXfont could be made to run programs as an administrator if it opened a specially crafted file.
Family:	unix	Class:	patch
Reference(s):	USN-1191-1 CVE-2011-2895	Version:	5
Platform(s):	Ubuntu 11.04 Ubuntu 10.04 Ubuntu 10.10	Product(s):	libXfont
Definition Synopsis:
Release section Ubuntu 11.04 is installed AND Installed architecture is all AND libxfont1 DPKG is earlier than 1:1.4.3-2ubuntu0.1 OR Release section Ubuntu 10.04 is installed AND Installed architecture is all AND libxfont1 DPKG is earlier than 1:1.4.1-1ubuntu0.1 OR Release section Ubuntu 10.10 is installed AND Installed architecture is all AND libxfont1 DPKG is earlier than 1:1.4.2-1ubuntu0.1

Definition Id: oval:org.mitre.oval:def:14918

Oval ID:	oval:org.mitre.oval:def:14918
Title:	DSA-2293-1 libxfont -- buffer overflow
Description:	Tomas Hoger found a buffer overflow in the X.Org libXfont library, which may allow for a local privilege escalation through crafted font files.
Family:	unix	Class:	patch
Reference(s):	DSA-2293-1 CVE-2011-2895	Version:	5
Platform(s):	Debian GNU/Linux 5.0 Debian GNU/Linux 6.0 Debian GNU/kFreeBSD 6.0	Product(s):	libxfont
Definition Synopsis:
Release section Debian GNU/Linux 5.0 is installed AND Installed architecture is all AND libxfont DPKG is earlier than 1.3.3-2 OR Release section Debian 6.0 is installed AND GNU/Linux or GNU/kFreeBSD kernel Debian GNU/Linux is installed AND Debian GNU/kFreeBSD is installed AND Installed architecture is all AND libxfont DPKG is earlier than 1.4.1-3

Definition Id: oval:org.mitre.oval:def:22062

Oval ID:	oval:org.mitre.oval:def:22062
Title:	RHSA-2011:1154: libXfont security update (Important)
Description:	The LZW decompressor in (1) the BufCompressedFill function in fontfile/decompress.c in X.Org libXfont before 1.4.4 and (2) compress/compress.c in 4.3BSD, as used in zopen.c in OpenBSD before 3.8, FreeBSD, NetBSD 4.0.x and 5.0.x before 5.0.3 and 5.1.x before 5.1.1, FreeType 2.1.9, and other products, does not properly handle code words that are absent from the decompression table when encountered, which allows context-dependent attackers to trigger an infinite loop or a heap-based buffer overflow, and possibly execute arbitrary code, via a crafted compressed stream, a related issue to CVE-2006-1168 and CVE-2011-2896.
Family:	unix	Class:	patch
Reference(s):	RHSA-2011:1154-01 CESA-2011:1154 CVE-2011-2895	Version:	4
Platform(s):	Red Hat Enterprise Linux 5 Red Hat Enterprise Linux 6 CentOS Linux 5 CentOS Linux 6	Product(s):	libXfont
Definition Synopsis:
Operation system section Redhat 5 or Centos 5 release The operating system installed on the system is Red Hat Enterprise Linux 5 AND The operating system installed on the system is CentOS Linux 5.x Packages section libXfont is earlier than 0:1.2.2-1.0.4.el5_7 AND libXfont-devel is earlier than 0:1.2.2-1.0.4.el5_7 AND Operation system section The operating system installed on the system is Red Hat Enterprise Linux 6 Packages section libXfont is earlier than 0:1.4.1-2.el6_1 AND libXfont-devel is earlier than 0:1.4.1-2.el6_1

Definition Id: oval:org.mitre.oval:def:23366

Oval ID:	oval:org.mitre.oval:def:23366
Title:	DEPRECATED: ELSA-2011:1154: libXfont security update (Important)
Description:	The LZW decompressor in (1) the BufCompressedFill function in fontfile/decompress.c in X.Org libXfont before 1.4.4 and (2) compress/compress.c in 4.3BSD, as used in zopen.c in OpenBSD before 3.8, FreeBSD, NetBSD 4.0.x and 5.0.x before 5.0.3 and 5.1.x before 5.1.1, FreeType 2.1.9, and other products, does not properly handle code words that are absent from the decompression table when encountered, which allows context-dependent attackers to trigger an infinite loop or a heap-based buffer overflow, and possibly execute arbitrary code, via a crafted compressed stream, a related issue to CVE-2006-1168 and CVE-2011-2896.
Family:	unix	Class:	patch
Reference(s):	ELSA-2011:1154-01 CVE-2011-2895	Version:	7
Platform(s):	Oracle Linux 5 Oracle Linux 6	Product(s):	libXfont
Definition Synopsis:
rpm test Oracle Linux 5.x AND rpm test libXfont is earlier than 0:1.2.2-1.0.4.el5_7 AND libXfont-devel is earlier than 0:1.2.2-1.0.4.el5_7 OR rpm test Oracle Linux 6.x AND rpm test libXfont is earlier than 0:1.4.1-2.el6_1 AND libXfont-devel is earlier than 0:1.4.1-2.el6_1

Definition Id: oval:org.mitre.oval:def:23404

Oval ID:	oval:org.mitre.oval:def:23404
Title:	ELSA-2011:1154: libXfont security update (Important)
Description:	The LZW decompressor in (1) the BufCompressedFill function in fontfile/decompress.c in X.Org libXfont before 1.4.4 and (2) compress/compress.c in 4.3BSD, as used in zopen.c in OpenBSD before 3.8, FreeBSD, NetBSD 4.0.x and 5.0.x before 5.0.3 and 5.1.x before 5.1.1, FreeType 2.1.9, and other products, does not properly handle code words that are absent from the decompression table when encountered, which allows context-dependent attackers to trigger an infinite loop or a heap-based buffer overflow, and possibly execute arbitrary code, via a crafted compressed stream, a related issue to CVE-2006-1168 and CVE-2011-2896.
Family:	unix	Class:	patch
Reference(s):	ELSA-2011:1154-01 CVE-2011-2895	Version:	6
Platform(s):	Oracle Linux 5 Oracle Linux 6	Product(s):	libXfont
Definition Synopsis:
rpm test Oracle Linux 5.x AND rpm test libXfont is earlier than 0:1.2.2-1.0.4.el5_7 AND libXfont-devel is earlier than 0:1.2.2-1.0.4.el5_7 OR rpm test Oracle Linux 6.x AND rpm test libXfont is earlier than 0:1.4.1-2.el6_1 AND libXfont-devel is earlier than 0:1.4.1-2.el6_1

Definition Id: oval:org.mitre.oval:def:28127

Oval ID:	oval:org.mitre.oval:def:28127
Title:	DEPRECATED: ELSA-2011-1154 -- libXfont security update (important)
Description:	[1.4.1-2] - cve-2011-2895.patch: LZW decompression heap corruption
Family:	unix	Class:	patch
Reference(s):	ELSA-2011-1154 CVE-2011-2895	Version:	4
Platform(s):	Oracle Linux 5 Oracle Linux 6	Product(s):	libXfont
Definition Synopsis:
Oracle Linux 5 release section Oracle Linux 5.x Packages match section libXfont is earlier than 0:1.2.2-1.0.4.el5_7 AND libXfont-devel is earlier than 0:1.2.2-1.0.4.el5_7 AND Oracle Linux 6 release section Oracle Linux 6.x Packages match section libXfont is earlier than 0:1.4.1-2.el6_1 AND libXfont-devel is earlier than 0:1.4.1-2.el6_1

CPE : Common Platform Enumeration

Type	Description	Count
Application	Freetype cpe:2.3:a:freetype:freetype:2.1.9:::::::*	1
Application	X Libxfont cpe:2.3:a:x:libxfont:1.4.3:::::::* cpe:2.3:a:x:libxfont:1.4.2:::::::* cpe:2.3:a:x:libxfont:1.4.1:::::::* cpe:2.3:a:x:libxfont:1.4.0:::::::* cpe:2.3:a:x:libxfont:1.3.4:::::::* cpe:2.3:a:x:libxfont:1.3.3:::::::* cpe:2.3:a:x:libxfont:1.3.2:::::::* cpe:2.3:a:x:libxfont:1.3.1:::::::* cpe:2.3:a:x:libxfont:1.3.0:::::::* cpe:2.3:a:x:libxfont:1.2.9:::::::* cpe:2.3:a:x:libxfont:1.2.8:::::::* cpe:2.3:a:x:libxfont:1.2.7:::::::* cpe:2.3:a:x:libxfont:1.2.6:::::::* cpe:2.3:a:x:libxfont:1.2.5:::::::* cpe:2.3:a:x:libxfont:1.2.4:::::::* cpe:2.3:a:x:libxfont:1.2.3:::::::* cpe:2.3:a:x:libxfont:1.2.2:::::::* cpe:2.3:a:x:libxfont:1.2.1:::::::* cpe:2.3:a:x:libxfont:1.2.0:::::::* cpe:2.3:a:x:libxfont:1.1.0:::::::* cpe:2.3:a:x:libxfont::::::::	21
Os	Freebsd cpe:2.3:o:freebsd:freebsd::::::::	1
Os	Netbsd cpe:2.3:o:netbsd:netbsd::::::::	1
Os	Openbsd cpe:2.3:o:openbsd:openbsd:3.7:::::::* cpe:2.3:o:openbsd:openbsd:3.6:::::::* cpe:2.3:o:openbsd:openbsd:3.5:::::::* cpe:2.3:o:openbsd:openbsd:3.4:::::::* cpe:2.3:o:openbsd:openbsd:3.3:::::::* cpe:2.3:o:openbsd:openbsd:3.2:::::::* cpe:2.3:o:openbsd:openbsd:3.1:::::::* cpe:2.3:o:openbsd:openbsd:3.0:::::::* cpe:2.3:o:openbsd:openbsd:2.9:::::::* cpe:2.3:o:openbsd:openbsd:2.8:::::::* cpe:2.3:o:openbsd:openbsd:2.7:::::::* cpe:2.3:o:openbsd:openbsd:2.6:::::::* cpe:2.3:o:openbsd:openbsd:2.5:::::::* cpe:2.3:o:openbsd:openbsd:2.4:::::::* cpe:2.3:o:openbsd:openbsd:2.3:::::::* cpe:2.3:o:openbsd:openbsd:2.2:::::::* cpe:2.3:o:openbsd:openbsd:2.1:::::::* cpe:2.3:o:openbsd:openbsd:2.0:::::::* cpe:2.3:o:openbsd:openbsd:current:::::::* cpe:2.3:o:openbsd:openbsd:::::::: cpe:2.3:o:openbsd:openbsd:-:::::::*	21

OpenVAS Exploits

Date	Description
2012-07-30	Name : CentOS Update for freetype CESA-2011:1161 centos4 x86_64 File : nvt/gb_CESA-2011_1161_freetype_centos4_x86_64.nasl
2012-07-30	Name : CentOS Update for xorg-x11 CESA-2011:1155 centos4 x86_64 File : nvt/gb_CESA-2011_1155_xorg-x11_centos4_x86_64.nasl
2012-07-30	Name : CentOS Update for libXfont CESA-2011:1154 centos5 x86_64 File : nvt/gb_CESA-2011_1154_libXfont_centos5_x86_64.nasl
2012-05-18	Name : Mac OS X Multiple Vulnerabilities (2012-002) File : nvt/gb_macosx_su12-002.nasl
2012-02-12	Name : FreeBSD Ports: FreeBSD File : nvt/freebsd_FreeBSD14.nasl
2012-02-06	Name : Mac OS X Multiple Vulnerabilities (2012-001) File : nvt/gb_macosx_su12-001.nasl
2011-11-08	Name : Mandriva Update for gimp MDVSA-2011:167 (gimp) File : nvt/gb_mandriva_MDVSA_2011_167.nasl
2011-10-21	Name : Mandriva Update for libxfont MDVSA-2011:153 (libxfont) File : nvt/gb_mandriva_MDVSA_2011_153.nasl
2011-10-16	Name : FreeBSD Security Advisory (FreeBSD-SA-11:04.compress.asc) File : nvt/freebsdsa_compress.nasl
2011-10-14	Name : Mandriva Update for cups MDVSA-2011:146 (cups) File : nvt/gb_mandriva_MDVSA_2011_146.nasl
2011-09-23	Name : CentOS Update for libXfont CESA-2011:1154 centos5 i386 File : nvt/gb_CESA-2011_1154_libXfont_centos5_i386.nasl
2011-09-21	Name : FreeBSD Ports: libXfont File : nvt/freebsd_libXfont.nasl
2011-09-21	Name : Debian Security Advisory DSA 2293-1 (libxfont) File : nvt/deb_2293_1.nasl
2011-08-19	Name : CentOS Update for freetype CESA-2011:1161 centos4 i386 File : nvt/gb_CESA-2011_1161_freetype_centos4_i386.nasl
2011-08-18	Name : CentOS Update for xorg-x11 CESA-2011:1155 centos4 i386 File : nvt/gb_CESA-2011_1155_xorg-x11_centos4_i386.nasl
2011-08-18	Name : RedHat Update for freetype RHSA-2011:1161-01 File : nvt/gb_RHSA-2011_1161-01_freetype.nasl
2011-08-18	Name : Ubuntu Update for libxfont USN-1191-1 File : nvt/gb_ubuntu_USN_1191_1.nasl
2011-08-12	Name : RedHat Update for libXfont RHSA-2011:1154-01 File : nvt/gb_RHSA-2011_1154-01_libXfont.nasl
2011-08-12	Name : RedHat Update for xorg-x11 RHSA-2011:1155-01 File : nvt/gb_RHSA-2011_1155-01_xorg-x11.nasl

Open Source Vulnerability Database (OSVDB)

Id	Description
74927	X.Org libXfont src/fontfile/decompress.c BufCompressedFill() Function LZW Dec...

Nessus® Vulnerability Scanner

Date	Description
2016-10-13	Name : The remote device is affected by multiple vulnerabilities. File : appletv_9_1.nasl - Type : ACT_GATHER_INFO
2015-12-11	Name : The remote host is missing a Mac OS X update that fixes multiple security vul... File : macosx_SecUpd2015-008.nasl - Type : ACT_GATHER_INFO
2015-12-10	Name : The remote host is missing a Mac OS X update that fixes multiple security vul... File : macosx_10_11_2.nasl - Type : ACT_GATHER_INFO
2015-03-27	Name : The remote Fedora host is missing a security update. File : fedora_2015-3948.nasl - Type : ACT_GATHER_INFO
2015-03-27	Name : The remote Fedora host is missing a security update. File : fedora_2015-3964.nasl - Type : ACT_GATHER_INFO
2015-03-23	Name : The remote Fedora host is missing a security update. File : fedora_2015-3953.nasl - Type : ACT_GATHER_INFO
2014-06-13	Name : The remote openSUSE host is missing a security update. File : suse_11_4_libpciaccess0-110905.nasl - Type : ACT_GATHER_INFO
2014-06-13	Name : The remote openSUSE host is missing a security update. File : suse_11_3_libpciaccess0-110905.nasl - Type : ACT_GATHER_INFO
2014-02-23	Name : The remote Gentoo host is missing one or more security-related patches. File : gentoo_GLSA-201402-23.nasl - Type : ACT_GATHER_INFO
2013-07-12	Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2011-1154.nasl - Type : ACT_GATHER_INFO
2013-07-12	Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2011-1155.nasl - Type : ACT_GATHER_INFO
2013-07-12	Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2011-1161.nasl - Type : ACT_GATHER_INFO
2013-01-24	Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2011-1834.nasl - Type : ACT_GATHER_INFO
2012-08-01	Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20110815_freetype_on_SL4_x.nasl - Type : ACT_GATHER_INFO
2012-08-01	Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20110811_xorg_x11_on_SL4_x.nasl - Type : ACT_GATHER_INFO
2012-08-01	Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20110811_libXfont_on_SL5_x.nasl - Type : ACT_GATHER_INFO
2012-05-10	Name : The remote host is missing a Mac OS X update that fixes several security issues. File : macosx_10_7_4.nasl - Type : ACT_GATHER_INFO
2012-02-02	Name : The remote host is missing a Mac OS X update that fixes multiple security vul... File : macosx_SecUpd2012-001.nasl - Type : ACT_GATHER_INFO
2012-02-02	Name : The remote host is missing a Mac OS X update that fixes several security vuln... File : macosx_10_7_3.nasl - Type : ACT_GATHER_INFO
2012-01-31	Name : The remote FreeBSD host is missing one or more security-related updates. File : freebsd_pkg_fee94342463811e19f4700e0815b8da8.nasl - Type : ACT_GATHER_INFO
2011-12-13	Name : The remote SuSE 11 host is missing one or more security updates. File : suse_11_libpciaccess0-110905.nasl - Type : ACT_GATHER_INFO
2011-12-13	Name : The remote SuSE 10 host is missing a security-related patch. File : suse_freetype2-7872.nasl - Type : ACT_GATHER_INFO
2011-12-13	Name : The remote SuSE 10 host is missing a security-related patch. File : suse_xorg-x11-7759.nasl - Type : ACT_GATHER_INFO
2011-11-07	Name : The remote Mandriva Linux host is missing one or more security updates. File : mandriva_MDVSA-2011-167.nasl - Type : ACT_GATHER_INFO
2011-10-18	Name : The remote Mandriva Linux host is missing one or more security updates. File : mandriva_MDVSA-2011-153.nasl - Type : ACT_GATHER_INFO
2011-10-11	Name : The remote Mandriva Linux host is missing one or more security updates. File : mandriva_MDVSA-2011-146.nasl - Type : ACT_GATHER_INFO
2011-09-23	Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2011-1154.nasl - Type : ACT_GATHER_INFO
2011-08-17	Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2011-1161.nasl - Type : ACT_GATHER_INFO
2011-08-16	Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2011-1161.nasl - Type : ACT_GATHER_INFO
2011-08-16	Name : The remote Ubuntu host is missing a security-related patch. File : ubuntu_USN-1191-1.nasl - Type : ACT_GATHER_INFO
2011-08-15	Name : The remote Debian host is missing a security-related update. File : debian_DSA-2293.nasl - Type : ACT_GATHER_INFO
2011-08-15	Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2011-1155.nasl - Type : ACT_GATHER_INFO
2011-08-12	Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2011-1155.nasl - Type : ACT_GATHER_INFO
2011-08-12	Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2011-1154.nasl - Type : ACT_GATHER_INFO
2011-08-12	Name : The remote FreeBSD host is missing a security-related update. File : freebsd_pkg_304409c3c3ef11e08aa5485d60cb5385.nasl - Type : ACT_GATHER_INFO

Alert History

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Date	Informations
2014-02-17 11:54:58	Multiple Updates

Global Informations

Type	Count
CWE ID(s)	1
Oval ID(s)	6
CPE ID(s)	45
osvdb(s)	1
Openvas Exploit(s)	19
Nessus® Exploit(s)	35

	Related
9.3	CVE-2011-2895
Info : listing not affected by your CVSS Env Score

Same Subject	Severity
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9.3 - RHSA-2011:1154

Executive Summary

Security-Database Scoring CVSS v3

Security-Database Scoring CVSS v2

Detail

Original Source

CWE : Common Weakness Enumeration

OVAL Definitions

CPE : Common Platform Enumeration

OpenVAS Exploits

Open Source Vulnerability Database (OSVDB)

Nessus® Vulnerability Scanner

Alert History

Global Informations

Open Standards

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