San Francisco: +1 (415) 635 3784  |  Geneva: +41 (022) 723 2424   |  
ImmuniWeb® Login | Register
ImmuniWeb® by High-Tech Bridge


High-Tech Bridge Newsletter

Subscribe to our newsletter and receive some or all of our corporate news, invitations to security events or HTB Security Advisories – you choose what you want to receive.

Directory Traversal Vulnerability in 32bit FTP Client

Advisory ID:HTB22512
Product:32bit FTP Client
Vendor:ElectraSoft
Vulnerable Versions:10.07.09 and probably prior
Tested Version:10.07.09
Advisory Publication:July 19, 2010 [without technical details]
Vendor Notification:July 19, 2010
Public Disclosure:August 2, 2010
Vulnerability Type:Path Traversal [CWE-22]
Risk Level:High
CVSSv2 Base Score:7.6 (AV:N/AC:H/Au:N/C:C/I:C/A:C)
Discovered and Provided:High-Tech Bridge Security Research Lab
 

Advisory Details:

High-Tech Bridge SA Security Research Lab has discovered vulnerability in 32bit FTP Client which could be exploited to execute arbitrary code on vulnerable system.

1) Directory Traversal Vulnerability in 32bit FTP Client
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 32bit FTP Client to connect to the FTP server and download a malicious file.


ImmuniWeb® On-Demand Web Application Penetration Test


Solution:
Currently we are not aware of any vendor-supplied patches or other solutions. The vendor was contacted in accordance to our Vendor Notification Policy but we didn't get any answer or feedback.


References:
[1] High-Tech Bridge Advisory HTB22512 - https://www.htbridge.com/advisory/HTB22512 - Directory Traversal Vulnerability in 32bit FTP Client
[2] 32bit FTP Client - electrasoft.com - 32bit FTP is a FTP client that comes with plenty of configuration options and a comprehensive help section.
[3] Common Weakness Enumeration (CWE) - http://cwe.mitre.org - targeted to developers and security practitioners, CWE is a formal list of software weakness types.
User Comments and Opinions


Have additional information to submit?
Please feel free to send us any additional information related to this Advisory, such as vulnerable versions, additional exploitation details and conditions, patches and other relevant details.