Cisco rolls out controller fix

Cisco has released a security update to address a flaw in its line of wireless LAN controllers.

The company on Tuesday issued security fixes to address a number of flaws with impacts ranging from denial-of-service to complete control of the device by an attacker.

Cisco said that the vulnerabilities mainly centered around the handling of HTTP and HTTPS commands, as well as a flaw concerning the handling of SSH requests. Attackers can target the flaws by sending malformed code or specially crafted commands, causing a denial of service and possibly giving the attacker network access.

Among the products said to be vulnerable to one or more of the attacks are Cisco's 1500, 2000, 2100, 4100, 4200 and 4400 Wireless Service Modules as well as the company's Integrated Service Routers and 3750G wireless LAN controllers.

The company is advising administrators to upgrade the vulnerable devices to the latest software versions or implement company-recommended workarounds.

Cisco's fix is the latest in what could be a very busy week for some administrators. Earlier this week Microsoft issued a pair of out of cycle patches to address a pair of vulnerabilities which have been actively targeted in malware attacks.