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Insecure Library Loading
Highly critical

RhinoSoft Serv-U Two Buffer Overflow Vulnerabilities

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Release Date:  2009-11-03    Last Update:  2010-05-28    Views:  6,674

Secunia Advisory SA37228

Where:

From remote

Impact:

DoS, System access

Solution Status:

Vendor Patch

Software:

CVE Reference(s):

Description


Two vulnerabilities have been discovered in Serv-U, which can be exploited by malicious people to compromise a vulnerable system.

1) A boundary error in the web administration interface when parsing session cookies can be exploited to cause a stack-based buffer overflow by sending an HTTP request containing a specially crafted cookie to the server.

Successful exploitation allows execution of arbitrary code.

2) A boundary error exists in a function when decoding a hexadecimal representation of a string using the 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.

The vulnerabilities are confirmed in version 9.0.0.5. Other versions may also be affected.


Solution:
Update to version 9.1.0.0.

Provided and/or discovered by:
1) Nikolaos Rangos, KC Security.
2) Secunia Research

Original Advisory:
Nikolaos Rangos:
http://www.rangos.de/ServU-ADV.txt

Secunia Research:
http://secunia.com/secunia_research/2009-46/

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: RhinoSoft Serv-U Two Buffer Overflow Vulnerabilities

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