Secunia Research: Symantec Mail Security Folio Flat File Parsing Buffer Overflows

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                     Secunia Research 08/04/2008

 - Symantec Mail Security Folio Flat File Parsing Buffer Overflows -

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Table of Contents

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

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1) Affected Software 

* Symantec Mail Security for SMTP 5.0.1 p187
* Symantec Mail Security for Exchange 5.0.7.373
* Symantec Mail Security for Domino 7.5.0.19

NOTE: Other versions may also be affected.

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2) Severity 

Rating: Highly critical
Impact: From remote
Where:  System access

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3) Vendor's Description of Software 

"Symantec Mail Security 5.0 for SMTP provides high-performance,
integrated mail protection against virus threats, spam, and other
unwanted content at the earliest point of network entry.".

Product Link:
http://www.symantec.com/business/products/overview.jsp?pcid=2250&pvid=845_1

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4) Description of Vulnerability

Secunia Research has discovered 21 vulnerabilities in Symantec Mail 
Security, which can be exploited by malicious people to compromise a
vulnerable system.

Boundary errors within the "Folio Flat File" speed reader
(foliosr.dll) when handling attribute values of a number of tags (eg.
DI, FD, FT, JD, JL, LE, OB, OD, OL, PN, PS, PW, RD, QL, or TS) can be
exploited to cause stack-based buffer overflows.

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5) Solution 

For Symantec Mail Security for SMTP update to version 5.0.1 patch
189, which resolves the vulnerabilities.

The vulnerabilities will be fixed by upcoming patches for Symantec 
Mail Security for Exchange and Symantec Mail Security for Domino.

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6) Time Table 

28/12/2007 - Autonomy notified.
28/12/2007 - Autonomy responds.
03/01/2008 - Symantec and other vendors notified.
07/01/2008 - Symantec responds.
11/03/2008 - Symantec release p189 of SMSSMTP 5.0.1 containing fix.
14/03/2008 - Secunia notifies other vendors of published fix.
08/04/2008 - Public disclosure.

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7) Credits 

Discovered by Dyon Balding, Secunia Research.

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8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned 
CVE-2007-6020 for the vulnerability.

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9) About Secunia

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

http://corporate.secunia.com/

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.

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Secunia believes that it is important to support the community and to
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security and reliability of software in general:

http://corporate.secunia.com/secunia_research/33/

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10) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2007-105/

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

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