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Secunia Research 18/11/2009
- RhinoSoft Serv-U TEA Decoding 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
* RhinoSoft Serv-U 9.0.0.5
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
"Serv-U FTP Server is now offers an all-in-one file server solution
featuring a built in web transfer client, web based adminstration,
improved interface and more while still offering unparalleled security
and ease-of-use at the best price on the market.".
Product Link:
http://www.serv-u.com/
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4) Description of Vulnerability
Secunia Research has discovered a vulnerability in Serv-U, which can
be exploited by malicious people to potentially compromise a
vulnerable system.
The vulnerability is caused by a boundary error in a function when
processing a hexadecimal representation of a string using a TEA
decoding algorithm. This can be exploited to cause a stack-based
buffer overflow by passing an overly long string.
Successful exploitation may allow execution of arbitrary code.
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5) Solution
Update to version 9.1.0.0.
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6) Time Table
05/11/2009 - Vendor notified.
05/11/2009 - Vendor response.
17/11/2009 - Fixed version released by the vendor.
18/11/2009 - 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 currently
not assigned a CVE identifier 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://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/
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10) Verification
Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2009-46/
Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/
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