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Insecure Library Loading
Highly critical

Sami FTP Server USER Command Buffer Overflow

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Release Date:  2006-01-25    Last Update:  2006-05-05    Views:  8,284

Secunia Advisory SA18574

Where:

From remote

Impact:

System access

Solution Status:

Unpatched

CVE Reference(s):

Description


Critical Security has discovered a vulnerability in Sami FTP Server, which can be exploited by malicious people to compromise a vulnerable system.

The vulnerability is caused due to a boundary error in the handling of the USER command. This can be exploited to cause a stack-based buffer overflow and allows arbitrary code execution via an overly long username.

Successful exploitation requires that the user clicks on the "Log" tab to view the on-screen server log. However, this is not necessary if the application is already running with the on-screen server log displayed.

The vulnerability has been confirmed in version 2.0.1 and 2.0.2. Other versions may also be affected.


Solution:
Filter malicious requests in a proxy or firewall with FTP filtering capabilities.

Provided and/or discovered by:
Originally discovered by Critical Security.

Reported in version 2.0.2 by:
Muhammad Ahmed Siddiqui

Original Advisory:
http://www.critical.lt/?vulnerabilities/208

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: Sami FTP Server USER Command Buffer Overflow

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