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AUSCERT External Security Bulletin Redistribution
ESB-2005.0342 -- RHSA-2005:377-01
Low: sharutils security update
27 April 2005
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: sharutils
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux AS/ES/WS 4
Red Hat Enterprise Linux Desktop 4
Red Hat Enterprise Linux AS/ES/WS 3
Red Hat Desktop 3
Red Hat Enterprise Linux AS/ES/WS 2.1
Red Hat Linux Advanced Workstation 2.1
Impact: Execute Arbitrary Code/Commands
Overwrite Arbitrary Files
Access: Remote/Unauthenticated
CVE Names: CAN-2005-0990 CAN-2004-1773 CAN-2004-1772
Original Bulletin: https://rhn.redhat.com/errata/RHSA-2005-377.html
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Red Hat Security Advisory
Synopsis: Low: sharutils security update
Advisory ID: RHSA-2005:377-01
Advisory URL: https://rhn.redhat.com/errata/RHSA-2005-377.html
Issue date: 2005-04-26
Updated on: 2005-04-26
Product: Red Hat Enterprise Linux
CVE Names: CAN-2004-1772 CAN-2004-1773 CAN-2005-0990
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1. Summary:
An updated sharutils package is now available.
This update has been rated as having low security impact by the Red Hat
Security Response Team.
2. Problem description:
The sharutils package contains a set of tools for encoding and decoding
packages of files in binary or text format.
A stack based overflow bug was found in the way shar handles the -o option.
If a user can be tricked into running a specially crafted command, it could
lead to arbitrary code execution. The Common Vulnerabilities and Exposures
project (cve.mitre.org) has assigned the name CAN-2004-1772 to this issue.
Please note that this issue does not affect Red Hat Enterprise Linux 4.
Two buffer overflow bugs were found in sharutils. If an attacker can place
a malicious 'wc' command on a victim's machine, or trick a victim into
running a specially crafted command, it could lead to arbitrary code
execution. The Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the name CAN-2004-1773 to this issue.
A bug was found in the way unshar creates temporary files. A local user
could use symlinks to overwrite arbitrary files the victim running unshar
has write access to. The Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the name CAN-2005-0990 to this issue.
All users of sharutils should upgrade to this updated package, which
includes backported fixes to correct these issues.
3. Solution:
Before applying this update, make sure that all previously-released
errata relevant to your system have been applied. Use Red Hat
Network to download and update your packages. To launch the Red Hat
Update Agent, use the following command:
up2date
For information on how to install packages manually, refer to the
following Web page for the System Administration or Customization
guide specific to your system:
http://www.redhat.com/docs/manuals/enterprise/
4. Bug IDs fixed (http://bugzilla.redhat.com/):
152571 - CAN-2004-1772 buffer overflow with -o option
152573 - CAN-2004-1773 Buffer overflows in unshar
154049 - CAN-2005-0990 insecure temp file usage
5. RPMs required:
Red Hat Enterprise Linux AS (Advanced Server) version 2.1:
SRPMS:
ftp://updates.redhat.com/enterprise/2.1AS/en/os/SRPMS/sharutils-4.2.1-8.9.x.src.rpm
4ff9ccec228d473e8983f60cec4f7bba sharutils-4.2.1-8.9.x.src.rpm
i386:
a11c9f7ce6ec7e339554f88dd586ca53 sharutils-4.2.1-8.9.x.i386.rpm
ia64:
c80d5a08b52b452b2c11cb7b0dffc59b sharutils-4.2.1-8.9.x.ia64.rpm
Red Hat Linux Advanced Workstation 2.1:
SRPMS:
ftp://updates.redhat.com/enterprise/2.1AW/en/os/SRPMS/sharutils-4.2.1-8.9.x.src.rpm
4ff9ccec228d473e8983f60cec4f7bba sharutils-4.2.1-8.9.x.src.rpm
ia64:
c80d5a08b52b452b2c11cb7b0dffc59b sharutils-4.2.1-8.9.x.ia64.rpm
Red Hat Enterprise Linux ES version 2.1:
SRPMS:
ftp://updates.redhat.com/enterprise/2.1ES/en/os/SRPMS/sharutils-4.2.1-8.9.x.src.rpm
4ff9ccec228d473e8983f60cec4f7bba sharutils-4.2.1-8.9.x.src.rpm
i386:
a11c9f7ce6ec7e339554f88dd586ca53 sharutils-4.2.1-8.9.x.i386.rpm
Red Hat Enterprise Linux WS version 2.1:
SRPMS:
ftp://updates.redhat.com/enterprise/2.1WS/en/os/SRPMS/sharutils-4.2.1-8.9.x.src.rpm
4ff9ccec228d473e8983f60cec4f7bba sharutils-4.2.1-8.9.x.src.rpm
i386:
a11c9f7ce6ec7e339554f88dd586ca53 sharutils-4.2.1-8.9.x.i386.rpm
Red Hat Enterprise Linux AS version 3:
SRPMS:
ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/sharutils-4.2.1-16.2.src.rpm
06a6b26786f3674b33280441417316c8 sharutils-4.2.1-16.2.src.rpm
i386:
3228571c5d375ff8ae96e6f7bf00a046 sharutils-4.2.1-16.2.i386.rpm
ia64:
caa4872797cbb61cbb3d86c9bc6b9c17 sharutils-4.2.1-16.2.ia64.rpm
ppc:
cf2564b18459cea9958c373396894ecc sharutils-4.2.1-16.2.ppc.rpm
s390:
ee6bb67d0ea5d5d79539437f78f1128f sharutils-4.2.1-16.2.s390.rpm
s390x:
89114c0f739d46695fa787f3227a960c sharutils-4.2.1-16.2.s390x.rpm
x86_64:
337510c9c7925ed4e916b2733059d35d sharutils-4.2.1-16.2.x86_64.rpm
Red Hat Desktop version 3:
SRPMS:
ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/sharutils-4.2.1-16.2.src.rpm
06a6b26786f3674b33280441417316c8 sharutils-4.2.1-16.2.src.rpm
i386:
3228571c5d375ff8ae96e6f7bf00a046 sharutils-4.2.1-16.2.i386.rpm
x86_64:
337510c9c7925ed4e916b2733059d35d sharutils-4.2.1-16.2.x86_64.rpm
Red Hat Enterprise Linux ES version 3:
SRPMS:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/sharutils-4.2.1-16.2.src.rpm
06a6b26786f3674b33280441417316c8 sharutils-4.2.1-16.2.src.rpm
i386:
3228571c5d375ff8ae96e6f7bf00a046 sharutils-4.2.1-16.2.i386.rpm
ia64:
caa4872797cbb61cbb3d86c9bc6b9c17 sharutils-4.2.1-16.2.ia64.rpm
x86_64:
337510c9c7925ed4e916b2733059d35d sharutils-4.2.1-16.2.x86_64.rpm
Red Hat Enterprise Linux WS version 3:
SRPMS:
ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/sharutils-4.2.1-16.2.src.rpm
06a6b26786f3674b33280441417316c8 sharutils-4.2.1-16.2.src.rpm
i386:
3228571c5d375ff8ae96e6f7bf00a046 sharutils-4.2.1-16.2.i386.rpm
ia64:
caa4872797cbb61cbb3d86c9bc6b9c17 sharutils-4.2.1-16.2.ia64.rpm
x86_64:
337510c9c7925ed4e916b2733059d35d sharutils-4.2.1-16.2.x86_64.rpm
Red Hat Enterprise Linux AS version 4:
SRPMS:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/sharutils-4.2.1-22.2.src.rpm
fb0f041f40c952667fa9e2415bb95481 sharutils-4.2.1-22.2.src.rpm
i386:
5528e7145b01b940474eed14da1a4bf5 sharutils-4.2.1-22.2.i386.rpm
ia64:
14609e1cd1f1d403ad562a27ff7090d0 sharutils-4.2.1-22.2.ia64.rpm
ppc:
83ae1ab7519ccd7905256da2319e006e sharutils-4.2.1-22.2.ppc.rpm
s390:
f81531770bdd340cf5bd39ebed7c211b sharutils-4.2.1-22.2.s390.rpm
s390x:
c68d22a3a01ad42d71b7d34b35a49896 sharutils-4.2.1-22.2.s390x.rpm
x86_64:
96fa0ac9f458ea3bed71aca056478e91 sharutils-4.2.1-22.2.x86_64.rpm
Red Hat Enterprise Linux Desktop version 4:
SRPMS:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/sharutils-4.2.1-22.2.src.rpm
fb0f041f40c952667fa9e2415bb95481 sharutils-4.2.1-22.2.src.rpm
i386:
5528e7145b01b940474eed14da1a4bf5 sharutils-4.2.1-22.2.i386.rpm
x86_64:
96fa0ac9f458ea3bed71aca056478e91 sharutils-4.2.1-22.2.x86_64.rpm
Red Hat Enterprise Linux ES version 4:
SRPMS:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/sharutils-4.2.1-22.2.src.rpm
fb0f041f40c952667fa9e2415bb95481 sharutils-4.2.1-22.2.src.rpm
i386:
5528e7145b01b940474eed14da1a4bf5 sharutils-4.2.1-22.2.i386.rpm
ia64:
14609e1cd1f1d403ad562a27ff7090d0 sharutils-4.2.1-22.2.ia64.rpm
x86_64:
96fa0ac9f458ea3bed71aca056478e91 sharutils-4.2.1-22.2.x86_64.rpm
Red Hat Enterprise Linux WS version 4:
SRPMS:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/sharutils-4.2.1-22.2.src.rpm
fb0f041f40c952667fa9e2415bb95481 sharutils-4.2.1-22.2.src.rpm
i386:
5528e7145b01b940474eed14da1a4bf5 sharutils-4.2.1-22.2.i386.rpm
ia64:
14609e1cd1f1d403ad562a27ff7090d0 sharutils-4.2.1-22.2.ia64.rpm
x86_64:
96fa0ac9f458ea3bed71aca056478e91 sharutils-4.2.1-22.2.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
6. References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1772
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1773
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0990
7. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://www.redhat.com/security/team/contact/
Copyright 2005 Red Hat, Inc.
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