Secunia Research: Novell eDirectory iMonitor "Accept-Language" Buffer Overflow

====================================================================== 

                     Secunia Research 14/07/2009

   - Novell eDirectory iMonitor "Accept-Language" Buffer Overflow -

====================================================================== 
Table of Contents

Affected Software....................................................1
Severity.............................................................2
Vendors Description of Software.....................................3
Description of Vulnerability.........................................4
Solution.............................................................5
Time Table...........................................................6
Credits..............................................................7
References...........................................................8
About Secunia........................................................9
Verification........................................................10

====================================================================== 
1) Affected Software 

* Novell eDirectory 8.8 SP3 and 8.8 SP3 FTF3

NOTE: Other versions may also be affected.

====================================================================== 
2) Severity 

Rating: Less critical 
Impact: Denial of Service
Where:  Local network

====================================================================== 
3) Vendors Description of Software 

"... Novell eDirectory is an LDAP directory service, and forms the 
basis for many of the worlds largest identity-management deployments.
Since its debut more than ten years ago, eDirectory has been trusted 
for its scalability, compatibility, reliability, manageability and 
security".

Product Link:
http://www.novell.com/products/edirectory/

====================================================================== 
4) Description of Vulnerability

Secunia Research has discovered a vulnerability in Novell eDirectory,
which can be exploited by malicious people to cause a DoS (Denial of 
Service).

The vulnerability is caused due to an off-by-one error in the iMonitor
component when processing HTTP requests. This can be exploited to 
cause a stack-based buffer overflow via an HTTP request having a
specially crafted "Accept-Language" header.

====================================================================== 
5) Solution 

Update to version 8.8 SP5.

====================================================================== 
6) Time Table 

05/03/2009 - Vendor notified.
11/03/2009 - Vendor response.
14/07/2009 - Public disclosure due to the release of 8.8 SP5.

====================================================================== 
7) Credits 

Discovered by Alin Rad Pop, Secunia Research.

====================================================================== 
8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned
CVE-2009-0192 for the vulnerability.

====================================================================== 
9) About Secunia

Secunia offers vulnerability management solutions to corporate
customers with verified and reliable vulnerability intelligence
relevant to their specific system configuration:

http://secunia.com/advisories/business_solutions/

Secunia also provides a publicly accessible and comprehensive advisory
database as a service to the security community and private 
individuals, who are interested in or concerned about IT-security.

http://secunia.com/advisories/

Secunia believes that it is important to support the community and to
do active vulnerability research in order to aid improving the 
security and reliability of software in general:

http://secunia.com/secunia_research/

Secunia regularly hires new skilled team members. Check the URL below
to see currently vacant positions:

http://secunia.com/corporate/jobs/

Secunia offers a FREE mailing list called Secunia Security Advisories:

http://secunia.com/advisories/mailing_lists/

====================================================================== 
10) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2009-13/

Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/

======================================================================