- ---------------------------------------------------------------------                   Red Hat Security Advisory

Synopsis:          Low: ncompress security update
Advisory ID:       RHSA-2006:0663-01
Advisory URL:      https://access.redhat.com/errata/RHSA-2006:0663.html
Issue date:        2006-09-12
Updated on:        2006-09-12
Product:           Red Hat Enterprise Linux
CVE Names:         CVE-2006-1168 
- ---------------------------------------------------------------------1. Summary:

Updated ncompress packages that address a security issue and fix bugs are
now available.

This update has been rated as having low security impact by the Red Hat
Security Response Team.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1 - i386, ia64
Red Hat Linux Advanced Workstation 2.1 - ia64
Red Hat Enterprise Linux ES version 2.1 - i386
Red Hat Enterprise Linux WS version 2.1 - i386
Red Hat Enterprise Linux AS version 3 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Desktop version 3 - i386, x86_64
Red Hat Enterprise Linux ES version 3 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 3 - i386, ia64, x86_64
Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux Desktop version 4 - i386, x86_64
Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64

3. Problem description:

The ncompress package contains file compression and decompression
utilities, which are compatible with the original UNIX compress utility (.Z
file extensions).

Tavis Ormandy of the Google Security Team discovered a lack of bounds
checking in ncompress. An attacker could create a carefully crafted file
that could execute arbitrary code if uncompressed by a victim. (CVE-2006-1168)

In addition, two bugs that affected Red Hat Enterprise Linux 4 ncompress
packages were fixed:

* The display statistics and compression results in verbose mode were not
shown when operating on zero length files.

* An attempt to compress zero length files resulted in an unexpected return
code.

Users of ncompress are advised to upgrade to these updated packages, which
contain backported patches to correct these issues.

4. Solution:

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

This update is available via Red Hat Network.  To use Red Hat Network,
launch the Red Hat Update Agent with the following command:

up2date

This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.

5. Bug IDs fixed (http://bugzilla.redhat.com/):

189215 - ncompress does not display statistics when compressing 0 length files
189216 - Bad return code when compressing 0 length files
201335 - CVE-2006-1168 Possibility to underflow a .bss buffer with attacker controlled data

6. RPMs required:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1:

SRPMS:
eb6007ec73c99cfae684316e03a60b06  ncompress-4.2.4-38.rhel2.src.rpm

i386:
0c44556d4004264fc56dfc4d7881990e  ncompress-4.2.4-38.rhel2.i386.rpm

ia64:
ad1f16ed8f253b3d952a06e97bb4cb24  ncompress-4.2.4-38.rhel2.ia64.rpm

Red Hat Linux Advanced Workstation 2.1:

SRPMS:
eb6007ec73c99cfae684316e03a60b06  ncompress-4.2.4-38.rhel2.src.rpm

ia64:
ad1f16ed8f253b3d952a06e97bb4cb24  ncompress-4.2.4-38.rhel2.ia64.rpm

Red Hat Enterprise Linux ES version 2.1:

SRPMS:
eb6007ec73c99cfae684316e03a60b06  ncompress-4.2.4-38.rhel2.src.rpm

i386:
0c44556d4004264fc56dfc4d7881990e  ncompress-4.2.4-38.rhel2.i386.rpm

Red Hat Enterprise Linux WS version 2.1:

SRPMS:
eb6007ec73c99cfae684316e03a60b06  ncompress-4.2.4-38.rhel2.src.rpm

i386:
0c44556d4004264fc56dfc4d7881990e  ncompress-4.2.4-38.rhel2.i386.rpm

Red Hat Enterprise Linux AS version 3:

SRPMS:
5470ff0372b3eb8fa6da847646f0a3dc  ncompress-4.2.4-39.rhel3.src.rpm

i386:
bfd9c50245674413a25f6acd53bef47b  ncompress-4.2.4-39.rhel3.i386.rpm
00c0c000396c42c052e0378ce219292b  ncompress-debuginfo-4.2.4-39.rhel3.i386.rpm

ia64:
6e32698aab73a2cfa37198d52dbd8279  ncompress-4.2.4-39.rhel3.ia64.rpm
19b12f415a0c3a07520b753b56bccf64  ncompress-debuginfo-4.2.4-39.rhel3.ia64.rpm

ppc:
16e51ba793dfaaa9c125ef97030c8202  ncompress-4.2.4-39.rhel3.ppc.rpm
3305aa2ccaafa6b2b839a6f14a083907  ncompress-debuginfo-4.2.4-39.rhel3.ppc.rpm

s390:
694a79848689bf49165ffa70dbd48bfa  ncompress-4.2.4-39.rhel3.s390.rpm
a304fa968d23454da477ee87aac33b70  ncompress-debuginfo-4.2.4-39.rhel3.s390.rpm

s390x:
7882f3e72361f310507d991cb19a2b25  ncompress-4.2.4-39.rhel3.s390x.rpm
f38fff0242d9316bb9f5b0ad091aedb4  ncompress-debuginfo-4.2.4-39.rhel3.s390x.rpm

x86_64:
767f6aea14635db8913d2778e57627c1  ncompress-4.2.4-39.rhel3.x86_64.rpm
da1af0e9c76e10c3d82544ff6d71069f  ncompress-debuginfo-4.2.4-39.rhel3.x86_64.rpm

Red Hat Desktop version 3:

SRPMS:
5470ff0372b3eb8fa6da847646f0a3dc  ncompress-4.2.4-39.rhel3.src.rpm

i386:
bfd9c50245674413a25f6acd53bef47b  ncompress-4.2.4-39.rhel3.i386.rpm
00c0c000396c42c052e0378ce219292b  ncompress-debuginfo-4.2.4-39.rhel3.i386.rpm

x86_64:
767f6aea14635db8913d2778e57627c1  ncompress-4.2.4-39.rhel3.x86_64.rpm
da1af0e9c76e10c3d82544ff6d71069f  ncompress-debuginfo-4.2.4-39.rhel3.x86_64.rpm

Red Hat Enterprise Linux ES version 3:

SRPMS:
5470ff0372b3eb8fa6da847646f0a3dc  ncompress-4.2.4-39.rhel3.src.rpm

i386:
bfd9c50245674413a25f6acd53bef47b  ncompress-4.2.4-39.rhel3.i386.rpm
00c0c000396c42c052e0378ce219292b  ncompress-debuginfo-4.2.4-39.rhel3.i386.rpm

ia64:
6e32698aab73a2cfa37198d52dbd8279  ncompress-4.2.4-39.rhel3.ia64.rpm
19b12f415a0c3a07520b753b56bccf64  ncompress-debuginfo-4.2.4-39.rhel3.ia64.rpm

x86_64:
767f6aea14635db8913d2778e57627c1  ncompress-4.2.4-39.rhel3.x86_64.rpm
da1af0e9c76e10c3d82544ff6d71069f  ncompress-debuginfo-4.2.4-39.rhel3.x86_64.rpm

Red Hat Enterprise Linux WS version 3:

SRPMS:
5470ff0372b3eb8fa6da847646f0a3dc  ncompress-4.2.4-39.rhel3.src.rpm

i386:
bfd9c50245674413a25f6acd53bef47b  ncompress-4.2.4-39.rhel3.i386.rpm
00c0c000396c42c052e0378ce219292b  ncompress-debuginfo-4.2.4-39.rhel3.i386.rpm

ia64:
6e32698aab73a2cfa37198d52dbd8279  ncompress-4.2.4-39.rhel3.ia64.rpm
19b12f415a0c3a07520b753b56bccf64  ncompress-debuginfo-4.2.4-39.rhel3.ia64.rpm

x86_64:
767f6aea14635db8913d2778e57627c1  ncompress-4.2.4-39.rhel3.x86_64.rpm
da1af0e9c76e10c3d82544ff6d71069f  ncompress-debuginfo-4.2.4-39.rhel3.x86_64.rpm

Red Hat Enterprise Linux AS version 4:

SRPMS:
a99ca43a68463aded1fa28d0184288ae  ncompress-4.2.4-43.rhel4.src.rpm

i386:
93e2cece010a5f63060d895bfbc50349  ncompress-4.2.4-43.rhel4.i386.rpm
5d7637bf393d30cfef3b4262d19ec3aa  ncompress-debuginfo-4.2.4-43.rhel4.i386.rpm

ia64:
35239dd95950b6622ace488bcbe9e50b  ncompress-4.2.4-43.rhel4.ia64.rpm
0be7f133a43ce77859cf86635135a86e  ncompress-debuginfo-4.2.4-43.rhel4.ia64.rpm

ppc:
e41b5bacce5d1a5115d3013b32d2f25b  ncompress-4.2.4-43.rhel4.ppc.rpm
9134e58e31b06abf6bde5fadeb1c03e7  ncompress-debuginfo-4.2.4-43.rhel4.ppc.rpm

s390:
37d7fffa2e8a8e24421b2e26e4f3843c  ncompress-4.2.4-43.rhel4.s390.rpm
dfce5613e4d2d3edcae690a1cf4155e3  ncompress-debuginfo-4.2.4-43.rhel4.s390.rpm

s390x:
9f0f16b32fd0bdd5c4cea2bcfc3ad85e  ncompress-4.2.4-43.rhel4.s390x.rpm
54331af9e2989a8fa82410c3dea3e66c  ncompress-debuginfo-4.2.4-43.rhel4.s390x.rpm

x86_64:
b997549a109c544417f861c509ce2466  ncompress-4.2.4-43.rhel4.x86_64.rpm
e35693ccd5bd2b496068670ef8735702  ncompress-debuginfo-4.2.4-43.rhel4.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

SRPMS:
a99ca43a68463aded1fa28d0184288ae  ncompress-4.2.4-43.rhel4.src.rpm

i386:
93e2cece010a5f63060d895bfbc50349  ncompress-4.2.4-43.rhel4.i386.rpm
5d7637bf393d30cfef3b4262d19ec3aa  ncompress-debuginfo-4.2.4-43.rhel4.i386.rpm

x86_64:
b997549a109c544417f861c509ce2466  ncompress-4.2.4-43.rhel4.x86_64.rpm
e35693ccd5bd2b496068670ef8735702  ncompress-debuginfo-4.2.4-43.rhel4.x86_64.rpm

Red Hat Enterprise Linux ES version 4:

SRPMS:
a99ca43a68463aded1fa28d0184288ae  ncompress-4.2.4-43.rhel4.src.rpm

i386:
93e2cece010a5f63060d895bfbc50349  ncompress-4.2.4-43.rhel4.i386.rpm
5d7637bf393d30cfef3b4262d19ec3aa  ncompress-debuginfo-4.2.4-43.rhel4.i386.rpm

ia64:
35239dd95950b6622ace488bcbe9e50b  ncompress-4.2.4-43.rhel4.ia64.rpm
0be7f133a43ce77859cf86635135a86e  ncompress-debuginfo-4.2.4-43.rhel4.ia64.rpm

x86_64:
b997549a109c544417f861c509ce2466  ncompress-4.2.4-43.rhel4.x86_64.rpm
e35693ccd5bd2b496068670ef8735702  ncompress-debuginfo-4.2.4-43.rhel4.x86_64.rpm

Red Hat Enterprise Linux WS version 4:

SRPMS:
a99ca43a68463aded1fa28d0184288ae  ncompress-4.2.4-43.rhel4.src.rpm

i386:
93e2cece010a5f63060d895bfbc50349  ncompress-4.2.4-43.rhel4.i386.rpm
5d7637bf393d30cfef3b4262d19ec3aa  ncompress-debuginfo-4.2.4-43.rhel4.i386.rpm

ia64:
35239dd95950b6622ace488bcbe9e50b  ncompress-4.2.4-43.rhel4.ia64.rpm
0be7f133a43ce77859cf86635135a86e  ncompress-debuginfo-4.2.4-43.rhel4.ia64.rpm

x86_64:
b997549a109c544417f861c509ce2466  ncompress-4.2.4-43.rhel4.x86_64.rpm
e35693ccd5bd2b496068670ef8735702  ncompress-debuginfo-4.2.4-43.rhel4.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and 
details on how to verify the signature are available from
https://www.redhat.com/security/team/key/#package

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1168
http://www.redhat.com/security/updates/classification/#low

8. Contact:

The Red Hat security contact is .  More contact
details at https://www.redhat.com/security/team/contact/

Copyright 2006 Red Hat, Inc.