RHSA-2005:080 - Security Advisory

Topic

An updated cpio package that fixes a umask bug and supports large files
(>2GB) 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.

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 can read
and write) regardless of the user's umask setting. The Common
Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name
CAN-1999-1572 to this issue.

All users of cpio should upgrade to this updated package, which resolves
this issue, and adds support for large files (> 2GB).

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/

Affected Products

• Red Hat Enterprise Linux Server 3 x86_64
• Red Hat Enterprise Linux Server 3 ia64
• Red Hat Enterprise Linux Server 3 i386
• Red Hat Enterprise Linux Workstation 3 x86_64
• Red Hat Enterprise Linux Workstation 3 ia64
• Red Hat Enterprise Linux Workstation 3 i386
• Red Hat Enterprise Linux Desktop 3 x86_64
• Red Hat Enterprise Linux Desktop 3 i386
• Red Hat Enterprise Linux for IBM z Systems 3 s390x
• Red Hat Enterprise Linux for IBM z Systems 3 s390
• Red Hat Enterprise Linux for Power, big endian 3 ppc

Fixes

• BZ - 105617 - cpio does not support large files > 2GB
• BZ - 144688 - cpio fails to unpack initrd on ppc
• BZ - 145720 - CAN-1999-1572 cpio insecure file creation

CVEs

• CVE-1999-1572

References

(none)