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Secunia Research: IPSwitch IMail Server IMail Client Buffer Overflow

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                     Secunia Research 30/10/2007

        - IPSwitch IMail Server IMail Client Buffer Overflow -

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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 

* IMail Client 9.22 included with IPSwitch IMail Server 2006.22.

NOTE: Other versions may also be affected.

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2) Severity 

Rating: Moderately critical
Impact: Denial of Service
        System compromise
Where:  Remote

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3) Vendor's Description of Software 

The IMail Client "is provided for those who are administering IMail
Server on the NT workstation on which IMail Server is installed. It is
useful for reading the 'root' mailbox, working with seldom-used
accounts, and testing.".

Product Link:
http://www.ipswitch.com/purchase/products/imail_server.asp

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4) Description of Vulnerability

Secunia Research has discovered a vulnerability in the IMail Client,
which potentially can be exploited by malicious people to compromise a
user's system.

The vulnerability is caused due to a boundary error within the IMail
Client when processing emails containing multipart MIME data. This can
be exploited to cause a data segment-based buffer overflow via an
overly long "boundary" parameter (more than 212 bytes).

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

The vendor recommends users to delete the IMail Client application,
which will be removed from the next major release of the IPSwitch 
IMail Server.

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6) Time Table 

24/09/2007 - Vendor notified.
25/09/2007 - Vendor response.
30/10/2007 - Public disclosure.

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7) Credits 

Discovered by Secunia Research.

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8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned 
CVE-2007-4345 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/2007-81/

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

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