[ GLSA 200701-17 ] libgtop: Privilege escalation

[Matthias Geerdsen <vorlon () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200701-17
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: libgtop: Privilege escalation
      Date: January 23, 2007
      Bugs: #162169
        ID: 200701-17

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Synopsis
========

libgtop improperly handles filenames, possibly allowing for the
execution of arbitrary code.

Background
==========

libgtop facilitates the libgtop_daemon, which is used by GNOME to
obtain information about remote systems.

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

    -------------------------------------------------------------------
     Package             /  Vulnerable  /                   Unaffected
    -------------------------------------------------------------------
  1  gnome-base/libgtop      < 2.14.6                        >= 2.14.6

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

Liu Qishuai discovered that glibtop_get_proc_map_s() in
sysdeps/linux/procmap.c does not properly allocate memory for storing a
filename, allowing certain filenames to cause the buffer to overflow on
the stack.

Impact
======

By tricking a victim into executing an application that uses the
libgtop library (e.g. libgtop_daemon or gnome-system-monitor), a local
attacker could specify a specially crafted filename to be used by
libgtop causing a buffer overflow and possibly execute arbitrary code
with the rights of the user running the application.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All libgtop users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=gnome-base/libgtop-2.14.6"

References
==========

  [ 1 ] CVE-2007-0235
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0235

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

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

  http://security.gentoo.org/glsa/glsa-200701-17.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 2007 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/2.5

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