Secunia Research: Symantec Products wkssr.dll Floating Point Conversion Buffer Overflow

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

                     Secunia Research 28/07/2010

                        - Symantec Products -
      - wkssr.dll Floating Point Conversion Buffer Overflow -

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

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

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

* Symantec Mail Security for Microsoft Exchange
* Symantec Mail Security for Domino

NOTE: Other versions may also be affected.

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

Rating: Highly critical
Impact: System compromise
Where:  Remote

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

Secunia Research has discovered a vulnerability in various Symantec
products, which can be exploited by malicious people to compromise a 
vulnerable system.

The vulnerability is caused by a boundary error in the Spreadsheet
Lotus 123 reader (wkssr.dll) when converting floating point values in
certain record types. This can be exploited to cause a stack-based
buffer overflow via a specially crafted file.

Successful exploitation allows execution of arbitrary code.

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

Update to a fixed version.

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

12/03/2010 - Vendor notified.
12/03/2010 - Vendor response.
16/04/2010 - Status update requested.
16/04/2010 - Vendor provides status update.
24/05/2010 - Status update requested.
24/05/2010 - Vendor provides status update.
16/06/2010 - Status update requested.
23/06/2010 - Vendor provides status update.
08/07/2010 - Status update requested.
08/07/2010 - Vendor provides status update.
28/07/2010 - Public disclosure.

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

Discovered by Carsten Eiram, Secunia Research.

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

The Common Vulnerabilities and Exposures (CVE) project has assigned 
CVE-2010-0131 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/2010-25/

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

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