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Secunia Research: activePDF DocConverter Folio Flat File Parsing Buffer Overflows

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                     Secunia Research 08/04/2008

 - activePDF DocConverter 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 

* activePDF DocConverter 3.8.4.0

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 

"activePDF DocConverter enables you to convert to PDF from over 280
different file types, without requiring manual intervention."

Product Link:
http://www.activepdf.com/products/serverproducts/docconverter/

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4) Description of Vulnerability

Secunia Research has discovered 21 vulnerabilities in activePDF 
DocConverter, 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 

The vulnerabilities will be addressed in an upcoming version 3.8.4.5 
by removing the affected file viewers.

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6) Time Table 

28/12/2007 - Autonomy notified.
28/12/2007 - Autonomy responds.
03/01/2008 - activePDF and other vendors notified.
11/03/2008 - Symantec release p189 of SMSSMTP 5.0.1 containing fix.
14/03/2008 - activePDF notified 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.

http://secunia.com/

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

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

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Secunia offers a FREE mailing list called Secunia Security Advisories:

http://secunia.com/secunia_security_advisories/ 

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10) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2007-106/

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

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