Gentoo: Smb4K Multiple vulnerabilities
Posted by Benjamin D. Thomas   
Gentoo Multiple vulnerabilities have been identified in Smb4K.
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Gentoo Linux Security Advisory                           GLSA 200703-09
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                                            http://security.gentoo.org/
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  Severity: High
     Title: Smb4K: Multiple vulnerabilities
      Date: March 09, 2007
      Bugs: #156152
        ID: 200703-09

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Synopsis
========

Multiple vulnerabilities have been identified in Smb4K.

Background
==========

Smb4K is a SMB/CIFS (Windows) share browser for KDE.

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

    -------------------------------------------------------------------
     Package         /  Vulnerable  /                       Unaffected
    -------------------------------------------------------------------
  1  net-misc/smb4k      < 0.6.10a                          >= 0.6.10a

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

Kees Cook of the Ubuntu Security Team has identified multiple
vulnerabilities in Smb4K.

* The writeFile() function of smb4k/core/smb4kfileio.cpp makes
  insecure usage of temporary files.

* The writeFile() function also stores the contents of the sudoers
  file with incorrect permissions, allowing for the file's contents to
  be world-readable.

* The createLockFile() and removeLockFile() functions improperly
  handle lock files, possibly allowing for a race condition in file
  handling.

* The smb4k_kill utility distributed with Smb4K allows any user in
  the sudoers group to kill any process on the system.

* Lastly, there is the potential for multiple stack overflows when
  any Smb4K utility is used with the sudo command.

Impact
======

A local attacker could gain unauthorized access to arbitrary files via
numerous attack vectors. In some cases to obtain this unauthorized
access, an attacker would have to be a member of the sudoers list.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Smb4K users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-misc/smb4k-0.6.10a"

References
==========

  [ 1 ] CVE-2007-0472
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0472
  [ 2 ] CVE-2007-0473
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0473
  [ 3 ] CVE-2007-0474
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0474
  [ 4 ] CVE-2007-0475
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0475

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

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

  http://security.gentoo.org/glsa/glsa-200703-09.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