VMware and Cisco Systems released security fixes this week for serious vulnerabilities in networking virtualization and server software typically used in data centers.

Cisco patched a persistent denial-of-service vulnerability that could prevent the out-of-band management of Cisco Unified Computing System (UCS) E-Series Blade servers that are deployed in Cisco Integrated Services Routers Generation 2 (ISR G2).

The vulnerability is located in the SSH (Secure Shell) service of the Cisco Integrated Management Controller (Cisco IMC), a specialized micro-controller embedded in server motherboards that allows systems administrators to monitor and manage servers from outside their OS.

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