Argosoft FTP Server "RNTO" Command Buffer Overflow
Secunia Advisory: SA19934
Release Date: 2006-05-03
Last Update: 2006-05-08
Popularity: 5,092 views

Critical:
Moderately critical
Impact: DoS
System access
Where: From remote
Solution Status: Unpatched

Software:ArGoSoft FTP Server 1.4.x

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CVE reference:CVE-2006-2170


Description:
Infigo Information Security has discovered a vulnerability in Argosoft FTP Server, which can be exploited by malicious users to cause a DoS (Denial of Service) and potentially compromise a vulnerable system.

The vulnerability is caused due to a boundary error within the handling of the RNTO command. This can be exploited to cause a heap-based buffer overflow via overly long arguments passed to the command.

Successful exploitation crashes the FTP server and may allow arbitrary code execution.

The vulnerability has been confirmed in version 1.4.3.6. Other versions may also be affected.

Solution:
Restrict access to trusted users only.

Provided and/or discovered by:
Infigo Information Security

Changelog:
2006-05-08: Added CVE reference.


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