Cisco patches critical flaw in Prime Home device management server


Cisco Systems has fixed a critical vulnerability that could allow hackers to take over servers used by telecommunications providers to remotely manage customer equipment such as routers.

The vulnerability affects Cisco Prime Home, an automated configuration server (ACS) that communicates with subscriber devices using the TR-069 protocol. In addition to remotely managing customer equipment, it can also “automatically activate and configure subscribers and deliver advanced services via service packages” over mobile, fiber, cable, and other ISP networks.

“A vulnerability in the web-based GUI of Cisco Prime Home could allow an unauthenticated, remote attacker to bypass authentication and execute actions with administrator privileges,” Cisco said in its advisory.

Attackers could exploit the vulnerability by sending API commands over HTTP to a particular URL without requiring authentication. The flaw is caused by a processing error in the role-based access control of URLs, Cisco explained.

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