Title: Viralator CGI Input Validation Remote Shell Command Vulnerability
Severity: HIGH
Description:
Viralator is a Perl CGI script designed to work with the Squid proxy server. It works in conjunction with a virus scanning engine to scan all files downloaded through the proxy server.
Viralator passes a filename taken from the URL to two shell commands used to receive the file and to scan it. It does not validate or check this input, allowing a maliciously constructed URL to contain escaped shell commands. These commands will then be executed by the Viralator script.
This could potentially lead to a remote shell, and further system access by an attacker.
Affected Products:
- Duncan Hall Viralator 0.7.0
- Duncan Hall Viralator 0.8.0
- Duncan Hall Viralator 0.9.0 pre1
References:
- Duncan Hall: Viralator Homepage
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