SonicWall firewalls hit by active mass exploitation of suspected zero-day

SonicWall warned customers to disable encryption services on Gen 7 firewalls in the wake of an active attack spree targeting a yet-to-be identified vulnerability affecting a critical firewall service. Attacks have increased notably since Friday, the company said in a blog post.

Threat hunters and incident responders from Arctic Wolf, Google and Huntress have observed a wave of ransomware attacks beginning as early as July 15. Mounting evidence points to a zero-day vulnerability affecting the secure sockets layer (SSL) VPN protocol as the initial attack vector.

“A financially motivated threat actor is actively compromising victim environments and deploying Akira ransomware,” Charles Carmakal, CTO at Mandiant Consulting, said in a LinkedIn post Tuesday. “The speed and scale of the compromises suggests a potential zero-day vulnerability in SonicWall Gen 7 firewalls.”

Read more at CyberScoop