7.5 - RHSA-2005:332

Problem Description:

A new xloadimage package that fixes bugs in handling malformed tiff and pbm/pnm/ppm images, and in handling metacharacters in filenames 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 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 xloadimage utility displays images in an X Window System window, loads images into the root window, or writes images into a file. Xloadimage supports many image types (including GIF, TIFF, JPEG, XPM, and XBM).

A flaw was discovered in xloadimage where filenames were not properly quoted when calling the gunzip command. An attacker could create a file with a carefully crafted filename so that it would execute arbitrary commands if opened by a victim. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2005-0638 to this issue.

Another bug in xloadimage would cause it to crash if called with certain invalid TIFF, PNM, PBM, or PPM file names.

All users of xloadimage should upgrade to this erratum package which contains backported patches to correct these issues.

4. 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/

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

70867 - xloadimage crashes with some TIFF images 78481 - bad source code 150700 - CAN-2005-0638 xloadimage multiple issues.