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Secunia Research: Autonomy Keyview EML Reader Buffer Overflows

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                     Secunia Research 08/04/2008

         - Autonomy Keyview EML Reader 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 

* Autonomy Keyview 10.3.0.0

NOTE: Other versions may also be affected.

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2) Severity 

Rating: Highly critical
Impact: System compromise
Where:  Remote

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3) Vendor's Description of Software 

"Whether you require export of documents to Web-ready HTML or valid
XML, high-speed filtering, or high-fidelity viewing capabilities,
KeyView has a software developer kit that you can use.".

Product Link:
http://www.autonomy.com/content/Products/KeyView/index.en.html

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4) Description of Vulnerability

Secunia Research has discovered multiple vulnerabilities in Autonomy
Keyview, which can be exploited by malicious people to compromise a
user's system.

1) A boundary error in the EML reader (emlsr.dll) when parsing certain
headers ("To:", "Cc:", "Bcc:", "From:", "Date:", "Subject:",
"Priority:", "Importance:", and "X-MSMail-Priority:") in EML files can
be exploited to cause a heap-based buffer overflow via an overly long
string.

2) A boundary error in the EML reader (emlsr.dll) when encountering the
beginning of RFC2047 encoded-words in headers can be exploited to cause
a heap-based buffer overflow via an overly long string.

3) A boundary error in the EML reader (emlsr.dll) when parsing the text
string in RFC2047 encoded-words in headers can be exploited to cause a
heap-based buffer overflow via an overly long string.

4) A boundary error in the EML reader (emlsr.dll) when creating a
filename based on the subject in an EML file can be exploited to cause 
a heap-based buffer overflow via an overly long string.

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5) Solution 

Update to version 10.4.0.0 or later.

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6) Time Table 

08/11/2007 - IBM notified.
08/11/2007 - IBM response.
08/04/2008 - Public disclosure.

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7) Credits 

Discovered by Carsten Eiram, Secunia Research.

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8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned 
CVE-2007-5399 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:

http://secunia.com/secunia_vacancies/

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/2007-91/

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

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