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Gentoo Linux Security Advisory                           GLSA 200410-02
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Netpbm: Multiple temporary file issues
      Date: October 04, 2004
      Bugs: #65647
        ID: 200410-02

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Synopsis
========

Utilities included in old Netpbm versions are vulnerable to multiple
temporary files issues, potentially allowing a local attacker to
overwrite files with the rights of the user running the utility.

Background
==========

Netpbm is a toolkit containing more than 200 separate utilities for
manipulation and conversion of graphic images.

Affected packages
=================

    -------------------------------------------------------------------
     Package            /  Vulnerable  /                    Unaffected
    -------------------------------------------------------------------
  1  media-libs/netpbm     <= 9.12-r4                          >= 10.0

Description
===========

Utilities contained in the Netpbm package prior to the 9.25 version
contain defects in temporary file handling. They create temporary files
with predictable names without checking first that the target file
doesn't already exist.

Impact
======

A local attacker could create symbolic links in the temporary files
directory, pointing to a valid file somewhere on the filesystem. When a
user or a tool calls one of the affected utilities, this would result
in file overwriting with the rights of the user running the utility.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Netpbm users should upgrade to an unaffected version:

    # emerge sync

    # emerge -pv ">=media-libs/netpbm-10.0"
    # emerge ">=media-libs/netpbm-10.0"

References
==========

  [ 1 ] CVE-2003-0924
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2003-0924
  [ 2 ] US-CERT VU#487102
        http://www.kb.cert.org/vuls/id/487102

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

  http://security.gentoo.org/glsa/glsa-200410-02.xml

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2004 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/1.0