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Directory Traversal Vulnerability in SmartFTP

Advisory ID:HTB22525
Product:SmartFTP
Vendor:SmartSoft Ltd
Vulnerable Versions:4.0.1124.0 (32 and 64 bit) and probably prior
Tested Version:4.0.1124.0 (32 and 64 bit)
Advisory Publication:July 22, 2010 [without technical details]
Vendor Notification:July 22, 2010
Public Disclosure:August 5, 2010
Latest Update:July 24, 2010
Vulnerability Type:Path Traversal [CWE-22]
CVE Reference:CVE-2010-3099
Risk Level:High
CVSSv2 Base Score:7.6 (AV:N/AC:H/Au:N/C:C/I:C/A:C)
Solution Status:Fixed by Vendor
Discovered and Provided:High-Tech Bridge Security Research Lab
 

Advisory Details:

High-Tech Bridge SA Security Research Lab has discovered vulnerability in SmartFTP which could be exploited to execute arbitrary code on vulnerable system.

1) Directory Traversal Vulnerability in SmartFTP: CVE-2010-3099
The vulnerability exists due to insufficient sanitation of the downloaded filename. A remote attacker controlling an FTP server can trick user into downloading file with specially crafted filename, containing directory traversal sequences (e.g. "..\..\..\..\..\..\..\somefile.exe") and write it into arbitrary locations on the target system. Successful exploitation might allow remote code execution but requires that victim uses SmartFTP to connect to the FTP server and download a malicious file.


ImmuniWeb® On-Demand Web Application Penetration Test


Solution:
Upgrade to the most recent version


References:
[1] High-Tech Bridge Advisory HTB22525 - https://www.htbridge.com/advisory/HTB22525 - Directory Traversal Vulnerability in SmartFTP
[2] SmartFTP - smartftp.com - SmartFTP is the most popular FTP client for Windows
[3] Common Vulnerabilities and Exposures (CVE) - http://cve.mitre.org/ - international in scope and free for public use, CVE® is a dictionary of publicly known information security vulnerabilities and exposures.
[4] Common Weakness Enumeration (CWE) - http://cwe.mitre.org - targeted to developers and security practitioners, CWE is a formal list of software weakness types.
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