Barracuda · Barracuda Spam Firewall · CVE-2006-4081
**Name of the Vulnerable Software and Affected Versions**
Barracuda Spam Firewall (BSF) versions 3.3.01.001 through 3.3.03.053
**Description**
The issue allows remote attackers to execute commands via shell metacharacters, specifically the "|" pipe symbol, in the `file` parameter of the `preview email.cgi` script. This can potentially be extended to execute arbitrary commands.
**Recommendations**
For versions 3.3.01.001 through 3.3.03.053, consider restricting access to the `preview email.cgi` script until a fix is available, and avoid using the "|" pipe symbol in the `file` parameter to minimize the risk of exploitation.