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UNIRAS Brief - 545/05 - Gentoo - Two Security Advisories



 
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   UNIRAS (UK Govt CERT) Briefing Notice - 545/05 dated 15.07.05  Time: 14:45  
  UNIRAS is part of NISCC (National Infrastructure Security Co-ordination Centre)
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  UNIRAS material is also available from its website at www.uniras.gov.uk and
         Information about NISCC is available from www.niscc.gov.uk
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Title
=====

Gentoo - Two Security Advisories:
     1.  pam_ldap and nss_ldap: Plain text authentication leak [GLSA 200507-13] 
     2.  Mozilla Firefox: Multiple vulnerabilities             [GLSA 200507-14]


Detail
====== 

Security advisory summaries:

     1.  pam_ldap and nss_ldap fail to restart TLS when following a referral,
         possibly leading to credentials being sent in plain text.

     2.  Several vulnerabilities in Mozilla Firefox allow attacks ranging from
         execution of script code with elevated privileges to information leak.


Security advisory content follows:


1.


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Gentoo Linux Security Advisory                           GLSA 200507-13
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: pam_ldap and nss_ldap: Plain text authentication leak
      Date: July 14, 2005
      Bugs: #96767
        ID: 200507-13

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Synopsis
========

pam_ldap and nss_ldap fail to restart TLS when following a referral,
possibly leading to credentials being sent in plain text.

Background
==========

pam_ldap is a Pluggable Authentication Module which allows
authentication against an LDAP directory. nss_ldap is a Name Service
Switch module which allows 'passwd', 'group' and 'host' database
information to be pulled from LDAP. TLS is Transport Layer Security, a
protocol that allows encryption of network communications.

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

    -------------------------------------------------------------------
     Package            /  Vulnerable  /                    Unaffected
    -------------------------------------------------------------------
  1  sys-auth/nss_ldap      < 239-r1                         >= 239-r1
                                                            *>= 226-r1
  2  sys-auth/pam_ldap      < 178-r1                         >= 178-r1
    -------------------------------------------------------------------
     2 affected packages on all of their supported architectures.
    -------------------------------------------------------------------

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

Rob Holland of the Gentoo Security Audit Team discovered that pam_ldap
and nss_ldap fail to use TLS for referred connections if they are
referred to a master after connecting to a slave, regardless of the
"ssl start_tls" ldap.conf setting.

Impact
======

An attacker could sniff passwords or other sensitive information as the
communication is not encrypted.

Workaround
==========

pam_ldap and nss_ldap can be set to force the use of SSL instead of
TLS.

Resolution
==========

All pam_ldap users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=sys-auth/pam_ldap-178-r1"

All nss_ldap users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose sys-auth/nss_ldap

References
==========

  [ 1 ] CAN-2005-2069
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2069

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

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

  http://security.gentoo.org/glsa/glsa-200507-13.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@xxxxxxxxxx or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2005 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/2.0





2.


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Gentoo Linux Security Advisory                           GLSA 200507-14
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Mozilla Firefox: Multiple vulnerabilities
      Date: July 15, 2005
      Bugs: #95199
        ID: 200507-14

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Synopsis
========

Several vulnerabilities in Mozilla Firefox allow attacks ranging from
execution of script code with elevated privileges to information leak.

Background
==========

Mozilla Firefox is the next-generation web browser from the Mozilla
project.

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

    -------------------------------------------------------------------
     Package                         /  Vulnerable  /       Unaffected
    -------------------------------------------------------------------
  1  www-client/mozilla-firefox           < 1.0.5             >= 1.0.5
  2  www-client/mozilla-firefox-bin       < 1.0.5             >= 1.0.5
    -------------------------------------------------------------------
     2 affected packages on all of their supported architectures.
    -------------------------------------------------------------------

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

The following vulnerabilities were found and fixed in Mozilla Firefox:

* "moz_bug_r_a4" and "shutdown" discovered that Firefox was
  improperly cloning base objects (MFSA 2005-56).

* Michael Krax reported that Firefox was not correctly handling
  JavaScript URLs from external applications (MFSA 2005-53), and that
  the "Set as wallpaper" function in versions 1.0.3 and 1.0.4 could be
  abused to load JavaScript (MFSA 2005-47).

* Several researchers reported ways to trick Firefox into accepting
  events generated by web content (MFSA 2005-45).

* Kohei Yoshino discovered a new way to inject script from the
  sidebar panel using data: (MFSA 2005-49).

* "moz_bug_r_a4" reported that Firefox failed to validate XHTML DOM
  nodes properly (MFSA 2005-55), and that XBL scripts ran even when
  Javascript is disabled (MFSA 2005-46).

* "shutdown" discovered a possibly exploitable crash in
  InstallVersion.compareTo (MFSA 2005-50).

* Finally, Secunia discovered that a child frame can call top.focus()
  even if the framing page comes from a different origin and has
  overridden the focus() routine (MFSA 2005-52), and that the frame
  injection spoofing bug fixed in 1.0.2 was mistakenly reintroduced in
  1.0.3 and 1.0.4 (MFSA 2005-51).

Impact
======

A remote attacker could craft malicious web pages that would leverage
these issues to inject and execute arbitrary script code with elevated
privileges, steal cookies or other information from web pages, or spoof
content.

Workaround
==========

There are no known workarounds for all the issues at this time.

Resolution
==========

All Mozilla Firefox users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=www-client/mozilla-firefox-1.0.5"

All Mozilla Firefox binary users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose
">=www-client/mozilla-firefox-bin-1.0.5"

References
==========

  [ 1 ] Mozilla Foundation Security Advisories

http://www.mozilla.org/projects/security/known-vulnerabilities.html#Firefox

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

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

  http://security.gentoo.org/glsa/glsa-200507-14.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@xxxxxxxxxx or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2005 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/2.0



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For additional information or assistance, please contact the HELP Desk by 
telephone or Not Protectively Marked information may be sent via 
EMail to: uniras@xxxxxxxxxxxx

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On Call Duty Officer:
Tel: +44 (0) 870 487 0748 and follow the prompts

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UNIRAS wishes to acknowledge the contributions of Gentoo for the information 
contained in this Briefing. 
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This Briefing contains the information released by the original author. Some 
of the information may have changed since it was released. If the vulnerability 
affects you, it may be prudent to retrieve the advisory from the canonical site 
to ensure that you receive the most current information concerning that problem.

Reference to any specific commercial product, process, or service by trade 
name, trademark manufacturer, or otherwise, does not constitute or imply 
its endorsement, recommendation, or favouring by UNIRAS or NISCC.  The views 
and opinions of authors expressed within this notice shall not be used for 
advertising or product endorsement purposes.

Neither UNIRAS or NISCC shall also accept responsibility for any errors 
or omissions contained within this briefing notice. In particular, they shall 
not be liable for any loss or damage whatsoever, arising from or in connection 
with the usage of information contained within this notice.

UNIRAS is a member of the Forum of Incident Response and Security Teams (FIRST) 
and has contacts with other international Incident Response Teams (IRTs) in 
order to foster cooperation and coordination in incident prevention, to prompt 
rapid reaction to incidents, and to promote information sharing amongst its 
members and the community at large. 
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<End of UNIRAS Briefing>

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