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                   Red Hat Security Advisory

Synopsis:          Low: cpio security update
Advisory ID:       RHSA-2005:806-01
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2005-806.html
Issue date:        2005-11-10
Updated on:        2005-11-10
Product:           Red Hat Enterprise Linux
CVE Names:         CVE-1999-1572 CVE-2005-1111
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1. Summary:

An updated cpio package that fixes multiple issues is 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

3. Problem description:

GNU cpio copies files into or out of a cpio or tar archive. 

A race condition bug was found in cpio. It is possible for a local
malicious user to modify the permissions of a local file if they have write
access to a directory in which a cpio archive is being extracted. The
Common Vulnerabilities and Exposures project has assigned the name
CVE-2005-1111 to this issue.

It was discovered that cpio uses a 0 umask when creating files using the -O
(archive) option. This creates output files with mode 0666 (all users can
read and write) regardless of the user's umask setting. The Common
Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name
CVE-1999-1572 to this issue.

All users of cpio are advised to upgrade to this updated package, which
contains backported fixes for 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/):

169760 - CVE-2005-1111 Race condition in cpio
172191 - CVE-1999-1572 cpio insecure file creation


6. RPMs required:

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

SRPMS:
ftp://updates.redhat.com/enterprise/2.1AS/en/os/SRPMS/cpio-2.4.2-25.src.rpm
fb1356ef5473ad0fc59ef0e3b1763e25  cpio-2.4.2-25.src.rpm

i386:
661957107d50447b2bd13a83713b7d92  cpio-2.4.2-25.i386.rpm

ia64:
c49084cb373e105cdba632f58c7f2d3f  cpio-2.4.2-25.ia64.rpm

Red Hat Linux Advanced Workstation 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1AW/en/os/SRPMS/cpio-2.4.2-25.src.rpm
fb1356ef5473ad0fc59ef0e3b1763e25  cpio-2.4.2-25.src.rpm

ia64:
c49084cb373e105cdba632f58c7f2d3f  cpio-2.4.2-25.ia64.rpm

Red Hat Enterprise Linux ES version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1ES/en/os/SRPMS/cpio-2.4.2-25.src.rpm
fb1356ef5473ad0fc59ef0e3b1763e25  cpio-2.4.2-25.src.rpm

i386:
661957107d50447b2bd13a83713b7d92  cpio-2.4.2-25.i386.rpm

Red Hat Enterprise Linux WS version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1WS/en/os/SRPMS/cpio-2.4.2-25.src.rpm
fb1356ef5473ad0fc59ef0e3b1763e25  cpio-2.4.2-25.src.rpm

i386:
661957107d50447b2bd13a83713b7d92  cpio-2.4.2-25.i386.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-1999-1572
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-1111

8. 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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