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UNIRAS Brief - 776/06 - NISCC Vulnerability Advisory: 564575/NISCC/CRYSTALRPRTS



______________________________________________________________________________

 UNIRAS (UK Government CERT) Briefing - 776/06 dated 28.11.06 time 13:30
 UNIRAS is part of NISCC (the UK National Infrastructure Security
 Co-ordination Centre)
______________________________________________________________________________

 UNIRAS material is available from the NISCC website at www.niscc.gov.uk
______________________________________________________________________________

Title
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NISCC Vulnerability Advisory: 564575/NISCC/CRYSTALRPRTS

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Detail
======

NISCC Vulnerability Advisory 564575/NISCC/CRYSTALRPRTS

Predictable session identifiers in Crystal Reports

Version Information
-------------------
Advisory Reference      564575/NISCC/CRYSTALRPRTS
Release Date            28/11/06
Last Revision           28 November 2006
Version Number          0.2

Acknowledgement
---------------
We would like to thank the following people at MWR InfoSecurity who passed us 
information of their research and this vulnerability.

* L B Jennings
* M Ruks
* H M G Grobbelaar

What is affected?
-----------------
The following products are confirmed to be affected:

- Crystal Enterprise 9
- Crystal Enterprise 10

The following products are NOT affected:

- Business Objects XI 
- Business Objects XIr2

Severity 
--------
High.

Summary
-------
This vulnerability concerns Crystal Enterprise 9 and 10.  The vulnerability is 
located in the web front-end portion of the application.

Business Objects is aware of this vulnerability and has produced patches to 
address the problem. Please see 'Solution' for details on patches required to 
address this flaw.

Please note that the information contained within this advisory is subject to changes. All 
subscribers are therefore advised to regularly check the NISCC website 
(http://www.niscc.gov.uk/niscc/vulnAdv-en.html) for updates to this notice.

Details
-------
CVE Name                CVE-2006-4099
CVE Description         "Predictable session identifiers in Crystal Enterprise web front-end"

Crystal Reports uses a cookie to store a session identifier.  This identifier is 
not random and does not contain enough entropy, so is therefore predictable.

This could allow an attacker to hijack an authenticated session from anywhere 
that has access to the Crystal Reports server.

Mitigation
----------
Best practice guidelines should be followed so that only internal, trusted machines 
have access to the web front-end.  However, patches are available and should be installed.

Solution
--------
A Cumulative Hot Fix was issued on 9th June 2006 which fixes the vulnerability in 
Crystal Enterprise 10.

Crystal Reports 9 is an end-of-life product and Business Objects recommend that users 
upgrade to version 10.  The mitigation section above still applies.
 
Individual Cumulative Hot Fixes do not have numbers, but all hot fixes released after 
the above contain the fix for this vulnerability.

References
----------

MWR InfoSecurity have released their own advisory in addition to this, which is available at:

https://www.mwrinfosecurity.com/news/1632.html

Vendor Information
------------------
Business Objects is a global business intelligence (BI) software company, with more 
than 39,000 customers - including over 80 percent of the Fortune 500 - and a network of 
more than 3,000 partners and resellers.

For further information about Business Objects, please visit their website 
at http://www.businessobjects.com.

Credits
-------

The NISCC Vulnerability Management Team would like to thank MWR InfoSecurity for 
reporting this vulnerability.

The NISCC Vulnerability Management Team would also like to thank Business Objects 
for their co-operation and assistance in the handling of this vulnerability.

Contact Information
-------------------
The NISCC Vulnerability Management Team can be contacted as follows:

Email	   vulteam@xxxxxxxxxxxx 
           Please quote the advisory reference in the subject line

Telephone  +44 (0)870 487 0748 Ext 4511
           Monday - Friday 08:30 - 17:00

Fax	   +44 (0)870 487 0749

Post	   Vulnerability Management Team
           NISCC
           PO Box 832
           London
           SW1P 1BG

We encourage those who wish to communicate via email to make use of our PGP key. This is 
available from http://www.niscc.gov.uk/niscc/publicKey2-en.pop.

Please note that UK government protectively marked material should not be sent to the email 
address above. 

If you wish to be added to our email distribution list please email your request to 
uniras@xxxxxxxxxxxxx
 
What is NISCC?
--------------
For further information regarding the UK National Infrastructure Security Co-ordination 
Centre, please visit http://www.niscc.gov.uk.
 
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 NISCC. The views and opinions of authors expressed within this notice shall not 
be used for advertising or product endorsement purposes.

Neither shall NISCC accept responsibility for any errors or omissions contained within 
this advisory. 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.

C 2006 Crown Copyright 
<End of NISCC Vulnerability Advisory>



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Thank you for your contribution.
______________________________________________________________________________

For additional information or assistance, please contact our help desk
by telephone.  You may send Not Protectively Marked information via
e-mail to uniras@xxxxxxxxxxxxx

Office hours:

Mon - Fri: 08:30 - 17:00 hours
Tel: +44 (0) 870 487 0748 and follow the voice prompts
Fax: +44 (0) 870 487 0749

On-call duty officer outside office hours:
Tel: +44 (0) 870 487 0748 and follow the voice prompts

______________________________________________________________________________

UNIRAS wishes to acknowledge the contributions of MWR for the
information contained in this briefing.
______________________________________________________________________________

This notice contains 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 site of the original source 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.
______________________________________________________________________________

<End of UNIRAS Briefing>


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