National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2011-2895 Detail

Current 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.

Source:  MITRE
View Analysis Description

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 9.3 HIGH
Vector: (AV:N/AC:M/Au:N/C:C/I:C/A:C) (V2 legend)
Impact Subscore: 10.0
Exploitability Subscore: 8.6


Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete
Additional Information:
Victim must voluntarily interact with attack mechanism
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://cgit.freedesktop.org/xorg/lib/libXfont/commit/?id=d11ee5886e9d9ec610051a206b135a4cdc1e09a0 Patch
http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2011-007.txt.asc
http://lists.apple.com/archives/security-announce/2012/Feb/msg00000.html
http://lists.apple.com/archives/security-announce/2012/May/msg00001.html
http://lists.apple.com/archives/security-announce/2015/Dec/msg00000.html
http://lists.apple.com/archives/security-announce/2015/Dec/msg00001.html
http://lists.apple.com/archives/security-announce/2015/Dec/msg00002.html
http://lists.apple.com/archives/security-announce/2015/Dec/msg00005.html
http://lists.freedesktop.org/archives/xorg-announce/2011-August/001721.html Patch
http://lists.freedesktop.org/archives/xorg-announce/2011-August/001722.html Patch
http://lists.opensuse.org/opensuse-security-announce/2011-09/msg00019.html
http://lists.opensuse.org/opensuse-security-announce/2011-12/msg00004.html
http://securitytracker.com/id?1025920
http://support.apple.com/kb/HT5130
http://support.apple.com/kb/HT5281
http://www.debian.org/security/2011/dsa-2293
http://www.mandriva.com/security/advisories?name=MDVSA-2011:153
http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/compress/zopen.c#rev1.17
http://www.openwall.com/lists/oss-security/2011/08/10/10
http://www.redhat.com/support/errata/RHSA-2011-1154.html Vendor Advisory
http://www.redhat.com/support/errata/RHSA-2011-1155.html Vendor Advisory
http://www.redhat.com/support/errata/RHSA-2011-1161.html Vendor Advisory
http://www.redhat.com/support/errata/RHSA-2011-1834.html
http://www.securityfocus.com/bid/49124
http://www.ubuntu.com/usn/USN-1191-1
https://bugzilla.redhat.com/show_bug.cgi?id=725760 Patch
https://bugzilla.redhat.com/show_bug.cgi?id=727624
https://exchange.xforce.ibmcloud.com/vulnerabilities/69141
https://support.apple.com/HT205635
https://support.apple.com/HT205637
https://support.apple.com/HT205640
https://support.apple.com/HT205641

Technical Details

Vulnerability Type (View All)

  • Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:freetype:freetype:2.1.9:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:x:libxfont:1.2.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:x:libxfont:1.2.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:x:libxfont:1.2.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:x:libxfont:1.2.3:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:x:libxfont:1.2.4:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:x:libxfont:1.2.5:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:x:libxfont:1.2.6:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:x:libxfont:1.2.7:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:x:libxfont:1.2.8:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:x:libxfont:1.2.9:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:x:libxfont:1.3.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:x:libxfont:1.3.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:x:libxfont:1.3.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:x:libxfont:1.3.3:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:x:libxfont:1.3.4:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:x:libxfont:1.4.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:x:libxfont:1.4.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:x:libxfont:1.4.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:x:libxfont:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
1.4.3
 cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:netbsd:netbsd:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:openbsd:openbsd:2.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:openbsd:openbsd:2.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:openbsd:openbsd:2.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:openbsd:openbsd:2.3:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:openbsd:openbsd:2.4:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:openbsd:openbsd:2.5:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:openbsd:openbsd:2.6:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:openbsd:openbsd:2.7:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:openbsd:openbsd:2.8:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:openbsd:openbsd:2.9:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:openbsd:openbsd:3.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:openbsd:openbsd:3.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:openbsd:openbsd:3.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:openbsd:openbsd:3.3:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:openbsd:openbsd:3.4:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:openbsd:openbsd:3.5:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:openbsd:openbsd:3.6:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
3.7


Change History

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2011-2895
NVD Published Date:
08/19/2011
NVD Last Modified:
08/28/2017