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UNIRAS Brief - 300/04 - Two Gentoo Linux Security Advisory -



 
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   UNIRAS (UK Govt CERT) Briefing Notice - 300/04 dated 16.06.04  Time: 14:50  
  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
=====

Two Gentoo Linux Security Advisory - 
1. Gallery: Privilege escalation vulnerability

2. Horde-Chora: Remote code execution


Detail
====== 



1. There is a vulnerability in the Gallery photo album software which may allow 
an attacker to gain administrator privileges within Gallery.


2. A vulnerability in the diff viewer of Chora allows an attacker to inject shellcode. 
An attacker can exploit PHP's file upload functionality to upload a malicious binary 
to a vulnerable server, chmod it as executable, and run the file.




1.





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Gentoo Linux Security Advisory                           GLSA 200406-10
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Gallery: Privilege escalation vulnerability
      Date: June 15, 2004
      Bugs: #52798
        ID: 200406-10

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Synopsis
========

There is a vulnerability in the Gallery photo album software which may allow an 
attacker to gain administrator privileges within Gallery.

Background
==========

Gallery is a web application written in PHP which is used to organize and publish 
photo albums. It allows multiple users to build and maintain their own albums. It 
also supports the mirroring of images on other servers.

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

    -------------------------------------------------------------------
     Package           /   Vulnerable   /                   Unaffected
    -------------------------------------------------------------------
  1  app-misc/gallery      <= 1.4.3_p1                     >= 1.4.3_p2

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

There is a vulnerability in the Gallery photo album software which may allow an 
attacker to gain administrator privileges within Gallery. A Gallery administrator 
has full access to all albums and photos on the server, thus attackers may add or 
delete photos at will.

Impact
======

Attackers may gain full access to all Gallery albums. There is no risk to the webserver 
itself, or the server on which it runs.

Workaround
==========

There is no known workaround at this time. All users are encouraged to upgrade to the latest 
available version.

Resolution
==========

All users should upgrade to the latest available version of Gallery.

    # emerge sync

    # emerge -pv ">=app-misc/gallery-1.4.3_p2"
    # emerge ">=app-misc/gallery-1.4.3_p2"

References
==========

  [ 1 ] Gallery Announcement

http://gallery.menalto.com/modules.php?op=modload&name=News&file=article&sid=123&mode=thread&order=0&thold=0

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

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

     http://security.gentoo.org/glsa/glsa-200406-10.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 2004 Gentoo Technologies, 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

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2.



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Gentoo Linux Security Advisory                           GLSA 200406-09
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                                            http://security.gentoo.org/
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  Severity: High
     Title: Horde-Chora: Remote code execution
      Date: June 15, 2004
      Bugs: #53800
        ID: 200406-09

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Synopsis
========

A vulnerability in Chora allows remote code execution and file upload.

Background
==========

Chora is a PHP-based SVN/CVS repository viewer by the HORDE project.

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

    -------------------------------------------------------------------
     Package              /   Vulnerable   /                Unaffected
    -------------------------------------------------------------------
  1  net-www/horde-chora        < 1.2.2                       >= 1.2.2

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

A vulnerability in the diff viewer of Chora allows an attacker to inject shellcode. 
An attacker can exploit PHP's file upload functionality to upload a malicious binary 
to a vulnerable server, chmod it as executable, and run the file.

Impact
======

An attacker could remotely execute arbitrary binaries with the permissions of the 
PHP script, conceivably allowing further exploitation of local vulnerabilities and 
remote root access.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All users are advised to upgrade to the latest version of Chora:

    # emerge sync

    # emerge -pv ">=net-www/horde-chora-1.2.2"
    # emerge ">=net-www/horde-chora-1.2.2"

References
==========

  [ 1 ] e-matters Advisory
        http://security.e-matters.de/advisories/102004.html

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

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

     http://security.gentoo.org/glsa/glsa-200406-09.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@xxxxxxxxxx or alternatively, you may file a bug at 
http://bugs.gentoo.org.

License
=======

Copyright 2004 Gentoo Technologies, 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

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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

Office Hours:
Mon - Fri: 08:30 - 17:00 Hrs
Tel: +44 (0) 20 7821 1330 Ext 4511
Fax: +44 (0) 20 7821 1686

Outside of Office Hours:
On Call Duty Officer:
Tel: +44 (0) 20 7821 1330 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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