National Cyber Awareness System

Vulnerability Summary for CVE-2011-2895

Overview

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.

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

References to Advisories, Solutions, and Tools

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External Source: CONFIRM

Name: https://bugzilla.redhat.com/show_bug.cgi?id=725760

Type: Patch Information

Hyperlink:https://bugzilla.redhat.com/show_bug.cgi?id=725760

External Source: MLIST

Name: [xorg-announce] 20110810 [ANNOUNCE] libXfont 1.4.4

Type: Patch Information

Hyperlink:http://lists.freedesktop.org/archives/xorg-announce/2011-August/001722.html

External Source: MLIST

Name: [xorg-announce] 20110810 X.Org security advisory: libXfont LZW decompression heap corruption

Type: Patch Information

Hyperlink:http://lists.freedesktop.org/archives/xorg-announce/2011-August/001721.html

External Source: CONFIRM

Name: http://cgit.freedesktop.org/xorg/lib/libXfont/commit/?id=d11ee5886e9d9ec610051a206b135a4cdc1e09a0

Type: Patch Information

Hyperlink:http://cgit.freedesktop.org/xorg/lib/libXfont/commit/?id=d11ee5886e9d9ec610051a206b135a4cdc1e09a0

External Source: CONFIRM

Name: https://bugzilla.redhat.com/show_bug.cgi?id=727624

Hyperlink:https://bugzilla.redhat.com/show_bug.cgi?id=727624

External Source: XF

Name: xorg-lzw-bo(69141)

Hyperlink:http://xforce.iss.net/xforce/xfdb/69141

External Source: UBUNTU

Name: USN-1191-1

Hyperlink:http://www.ubuntu.com/usn/USN-1191-1

External Source: BID

Name: 49124

Hyperlink:http://www.securityfocus.com/bid/49124

External Source: REDHAT

Name: RHSA-2011:1834

Hyperlink:http://www.redhat.com/support/errata/RHSA-2011-1834.html

External Source: REDHAT

Name: RHSA-2011:1161

Type: Advisory

Hyperlink:http://www.redhat.com/support/errata/RHSA-2011-1161.html

External Source: REDHAT

Name: RHSA-2011:1155

Type: Advisory

Hyperlink:http://www.redhat.com/support/errata/RHSA-2011-1155.html

External Source: REDHAT

Name: RHSA-2011:1154

Type: Advisory

Hyperlink:http://www.redhat.com/support/errata/RHSA-2011-1154.html

External Source: MLIST

Name: [oss-security] 20110810 LZW decompression issues

Hyperlink:http://www.openwall.com/lists/oss-security/2011/08/10/10

External Source: CONFIRM

Name: http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/compress/zopen.c#rev1.17

Hyperlink:http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/compress/zopen.c#rev1.17

External Source: MANDRIVA

Name: MDVSA-2011:153

Hyperlink:http://www.mandriva.com/security/advisories?name=MDVSA-2011:153

External Source: DEBIAN

Name: DSA-2293

Hyperlink:http://www.debian.org/security/2011/dsa-2293

External Source: CONFIRM

Name: http://support.apple.com/kb/HT5281

Hyperlink:http://support.apple.com/kb/HT5281

External Source: CONFIRM

Name: http://support.apple.com/kb/HT5130

Hyperlink:http://support.apple.com/kb/HT5130

External Source: SECTRACK

Name: 1025920

Hyperlink:http://securitytracker.com/id?1025920

External Source: SECUNIA

Name: 48951

Hyperlink:http://secunia.com/advisories/48951

External Source: SECUNIA

Name: 46127

Hyperlink:http://secunia.com/advisories/46127

External Source: SECUNIA

Name: 45986

Hyperlink:http://secunia.com/advisories/45986

External Source: SECUNIA

Name: 45599

Type: Advisory

Hyperlink:http://secunia.com/advisories/45599

External Source: SECUNIA

Name: 45568

Type: Advisory

Hyperlink:http://secunia.com/advisories/45568

External Source: SECUNIA

Name: 45544

Type: Advisory

Hyperlink:http://secunia.com/advisories/45544

External Source: SUSE

Name: openSUSE-SU-2011:1299

Hyperlink:http://lists.opensuse.org/opensuse-security-announce/2011-12/msg00004.html

External Source: SUSE

Name: SUSE-SU-2011:1035

Hyperlink:http://lists.opensuse.org/opensuse-security-announce/2011-09/msg00019.html

External Source: APPLE

Name: APPLE-SA-2012-05-09-1

Hyperlink:http://lists.apple.com/archives/security-announce/2012/May/msg00001.html

External Source: APPLE

Name: APPLE-SA-2012-02-01-1

Hyperlink:http://lists.apple.com/archives/security-announce/2012/Feb/msg00000.html

External Source: NETBSD

Name: NetBSD-SA2011-007

Hyperlink:http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2011-007.txt.asc