{"id":1638,"date":"2023-08-30T14:30:00","date_gmt":"2023-08-30T14:30:00","guid":{"rendered":"https:\/\/www.threatstop.com\/blog\/protecting-your-network-gateway"},"modified":"2023-08-30T14:30:00","modified_gmt":"2023-08-30T14:30:00","slug":"protecting-the-perimeter-the-critical-role-of-your-network-gateway","status":"publish","type":"post","link":"https:\/\/ddi.mohflo.net\/index.php\/2023\/08\/30\/protecting-the-perimeter-the-critical-role-of-your-network-gateway\/","title":{"rendered":"Protecting the Perimeter: The Critical Role of Your Network Gateway"},"content":{"rendered":"

On August 23rd, the FBI issued a flash warning about a zero-day vulnerability (CVE-2023-2868) in the Barracuda Network’s Email Security Gateway (ESG).  <\/span>The vulnerability in Barracuda Network’s ESG (Email Security Gateway) allows unauthorized execution of system commands with administrator privileges through a remote command injection exploit, triggered when maliciously formatted TAR file attachments are sent to an email address connected to a domain with an ESG appliance. The scanning process is then exploited, leading to malicious command execution within the ESG.<\/span><\/p>\n

<\/span>Your network gateway, whether it be your firewall or router, is the common network element for all internet traffic. Most security tools, including those running on the gateway, focus on protecting the assets behind the gateway, but not the gateway itself. This leaves the gateway as a very juicy target, since it sees all traffic from and to the Internet (and often between different trust zones internally). <\/span><\/p>\n

Earlier this year, Ars Technica released an article<\/a> highlighting the growing threat malware attacks on business-grade routers, another network gateway device. Advanced malware that targets these devices allows threat actors to gain unauthorized access to a network gateway, which give them visibility into all traffic in and out of the network, and can be used to compromise the devices behind it. The malware is capable of:<\/p>\n