DarkFiber Consulting – IT Managed Services

Cisco has released a security advisory to address multiple vulnerabilities in Wireless LAN Controllers. The advisory addresses the following:

• Malformed HTTP or HTTPS authentication response denial-of-service vulnerability.
• SSH connections denial-of-service vulnerability.
• Crafted HTTP or HTTPS request denial-of-service vulnerability.
• Crafted HTTP or HTTPS request unauthorized configuration modification vulnerability.

Exploitation of these vulnerabilities may allow an attacker to cause a denial-of-service condition or gain full control over the Wireless LAN Controller.

DarkFiber Consulting encourages users and administrators to review Cisco Security Advisory cisco-sa-20090727-wlc and apply any necessary updates or workarounds to help mitigate the risks.

VMware has released a Security Advisory indicating it has updated the ESXi and ESX 3.5 packages to address a vulnerability in “openwsman”. This vulnerability is due to several buffer overflow conditions in the handling of HTTP basic authentication headers. Exploitation of this vulnerability may allow a remote, unauthenticated attacker to execute arbitrary code on the host running ESXi or ESX.

DarkFiber Consulting encourages users and administrators to review VMware Security Advisory VMSA-0008-0015 and apply any necessary updates to help mitigate the risks.