The OpenNET Project
 
Search (keywords):  SOFT ARTICLES TIPS & TRICKS SECURITY
LINKS NEWS MAN DOCUMENTATION


[ GLSA 200903-39 ] pam_krb5: Privilege escalation


<< Previous INDEX Search src / Print Next >>
Date: Wed, 25 Mar 2009 23:45:17 +0100
From: Pierre-Yves Rofes <py@gentoo.org.>
To: [email protected]
Subject: [ GLSA 200903-39 ] pam_krb5: Privilege escalation
X-Enigmail-Version: 0.95.7
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
X-Virus-Scanned: antivirus-gw at tyumen.ru

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory                           GLSA 200903-39
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                                            http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


  Severity: High
     Title: pam_krb5: Privilege escalation
      Date: March 25, 2009
      Bugs: #257075
        ID: 200903-39

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


Synopsis
========

Two vulnerabilities in pam_krb5 might allow local users to elevate
their privileges or overwrite arbitrary files.

Background
==========

pam_krb5 is a a Kerberos v5 PAM module.

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

    -------------------------------------------------------------------
     Package            /  Vulnerable  /                    Unaffected
    -------------------------------------------------------------------
  1  sys-auth/pam_krb5       < 3.12                            >= 3.12


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

The following vulnerabilities were discovered:

* pam_krb5 does not properly initialize the Kerberos libraries for
  setuid use (CVE-2009-0360).


* Derek Chan reported that calls to pam_setcred() are not properly
  handled when running setuid (CVE-2009-0361).


Impact
======

A local attacker could set an environment variable to point to a
specially crafted Kerberos configuration file and launch a PAM-based
setuid application to elevate privileges, or change ownership and
overwrite arbitrary files.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All pam_krb5 users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=sys-auth/pam_krb5-3.12"


References
==========

  [ 1 ] CVE-2009-0360
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0360
  [ 2 ] CVE-2009-0361
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0361

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

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

  http://security.gentoo.org/glsa/glsa-200903-39.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
[email protected] or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2009 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


-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.9 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

iEYEARECAAYFAknKs/0ACgkQuhJ+ozIKI5jOHwCaAwO8UYwZpuUSFbW06x0CHksa
S9MAnjcv5ikl2dRFVyuG0/TXQZF0y3ER
=ACuG
-----END PGP SIGNATURE-----


<< Previous INDEX Search src / Print Next >>



Партнёры:
PostgresPro
Inferno Solutions
Hosting by Hoster.ru
Хостинг:

Закладки на сайте
Проследить за страницей
Created 1996-2024 by Maxim Chirkov
Добавить, Поддержать, Вебмастеру