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OVAL Definitions
>
OVAL Definition Details
Id
oval:ru.altx-soft.nix:def:8441
[Eng]
Version
8
Class
patch
ALTXid
74930
Language
Russian
Severity
High
Title
Обновление RHSA-2011:1834 : устранение уязвимостей в libXfont
Description
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)
Family
unix
Platform
Red Hat Enterprise Linux 5
Product
libXfont
Reference
VENDOR: RHSA-2011:1834
VENDOR: RHSA-2011:1834
Id:
RHSA-2011:1834
Reference:
https://rhn.redhat.com/errata/RHSA-2011-1834.html
CVE: CVE-2011-2895
CVE: CVE-2011-2895
Id:
CVE-2011-2895
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2895
Comment
: 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.
CVSSv2 Score:
9.3
Access vector:
NETWORK
Access complexity:
MEDIUM
Authentication:
NONE
Confidentiality impact:
COMPLETE
Integrity impact:
COMPLETE
Availability impact:
COMPLETE
CVSSv2 Vector:
AV:N/AC:M/Au:N/C:C/I:C/A:C
CWE:
119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)
References:
USN-1191-1 (UBUNTU)
[xorg-announce] 20110810 X.Org security advisory: libXfont LZW decompression heap corruption (MLIST)
http://cgit.freedesktop.org/xorg/lib/libXfont/commit/?id=d11ee5886e9d9ec610051a206b135a4cdc1e09a0 (CONFIRM)
https://bugzilla.redhat.com/show_bug.cgi?id=725760 (CONFIRM)
RHSA-2011:1155 (REDHAT)
45568 (SECUNIA)
[oss-security] 20110810 LZW decompression issues (MLIST)
1025920 (SECTRACK)
DSA-2293 (DEBIAN)
45544 (SECUNIA)
RHSA-2011:1154 (REDHAT)
49124 (BID)
45599 (SECUNIA)
https://bugzilla.redhat.com/show_bug.cgi?id=727624 (CONFIRM)
[xorg-announce] 20110810 [ANNOUNCE] libXfont 1.4.4 (MLIST)
http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/compress/zopen.c#rev1.17 (CONFIRM)
RHSA-2011:1161 (REDHAT)
45986 (SECUNIA)
SUSE-SU-2011:1035 (SUSE)
46127 (SECUNIA)
NetBSD-SA2011-007 (NETBSD)
MDVSA-2011:153 (MANDRIVA)
openSUSE-SU-2011:1299 (SUSE)
RHSA-2011:1834 (REDHAT)
APPLE-SA-2012-02-01-1 (APPLE)
http://support.apple.com/kb/HT5130 (CONFIRM)
http://support.apple.com/kb/HT5281 (CONFIRM)
APPLE-SA-2012-05-09-1 (APPLE)
48951 (SECUNIA)
https://support.apple.com/HT205635 (CONFIRM)
APPLE-SA-2015-12-08-3 (APPLE)
https://support.apple.com/HT205637 (CONFIRM)
APPLE-SA-2015-12-08-4 (APPLE)
APPLE-SA-2015-12-08-1 (APPLE)
https://support.apple.com/HT205641 (CONFIRM)
APPLE-SA-2015-12-08-2 (APPLE)
https://support.apple.com/HT205640 (CONFIRM)
xorg-lzw-bo(69141) (XF)
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