Title: Gene6 FTP Server Remote Default Install Code Execution Vulnerability
Severity: CRITICAL
Description:
Gene6 FTP Server is a commercially available FTP server application for Microsoft Windows.
A remote code-execution vulnerability reportedly affects Gene6 FTP Server because of a configuration error that fails to secure critical functionality from default users.
The problem presents itself because a user account with the default configuration can execute arbitrary code on an affected computer. Apparently, the default user configuration allows users to create other user accounts and define 'SITE' commands for the FTP server.
Using a SITE command, an attacker can map a SITE command to an arbitrary executable on the affected system. The attacker can then invoke the mapped executable using the 'quote site' command. Note that the affected server runs with SYSTEM privileges.
NOTE: Default configurations are affected by this issue. Servers with reconfigured settings may not be vulnerable.
An attacker that can authenticate to the affected FTP server can execute arbitrary code with SYSTEM privileges; this will facilitate privilege escalation.
Affected Products:
- Gene6 G6 FTP Server 2.0.0
- Gene6 G6 FTP Server 3.0.0
- Gene6 G6 FTP Server 3.0.1
- Gene6 G6 FTP Server 3.0.2
- Gene6 G6 FTP Server 3.1.0
- Gene6 G6 FTP Server 3.2.0
- Gene6 G6 FTP Server 3.3.0
- Gene6 G6 FTP Server 3.3.1
- Gene6 G6 FTP Server 3.4.0
References:
- Gene6: gene6 G6 FTP Server homepage
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