RHSA-2005:806 - Security Advisory

Topic

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.

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.

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.

Affected Products

• Red Hat Enterprise Linux Server 2 ia64
• Red Hat Enterprise Linux Server 2 i386
• Red Hat Enterprise Linux Workstation 2 ia64
• Red Hat Enterprise Linux Workstation 2 i386

Fixes

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

CVEs

• CVE-1999-1572
• CVE-2005-1111

References

(none)