Tag Archives: Cisco

Cisco Jabber Client Vulnerable to Man-in-the-Middle Attack

Researchers at Synacktiv have disclosed a vulnerability in the Cisco Jabber Client for various platforms that exposes devices to man-in-the-middle attacks.

Scan of IPv4 Space for ‘Implanted’ Cisco Routers Finds Fewer Than 100

A day after researchers detailed a technique that attackers are using to upload malicious firmware images to Cisco routers, academic researchers say they have scanned the entire IPv4 address space and discovered a total of 79 likely compromised routers. The researchers at the University of Michigan used their Zmap tool, which can scan the Internet in about […]

Attackers Replacing Firmware on Cisco Routers

Cisco routers are built into the fabric of the Internet and enterprise networks, a fact that makes them highly attractive targets for attackers. Researchers at FireEye have come across attacks recently in which hackers have been modifying the firmware of Cisco routers and using that foothold to maintain persistence on the victim’s network. Such a technique […]

Cisco Patches File Overwrite Bug in IMC Supervisor and UCS Director

Cisco has patched a remote file-overwrite vulnerability in a couple of its products that could allow an attacker to replace arbitrary files and cause target systems to become unstable. The vulnerability affects the Cisco Integrated Management Controlled Supervisor and UCS Director software. The company has fixed the bug in new versions of the software, 1.0.0.1 […]

Cisco Warns Customers About Attacks Installing Malicious IOS Bootstrap Images

Cisco is warning enterprise customers about a spike in attacks in which hackers use valid credentials on IOS devices to log in as administrators and then upload malicious ROMMON images to take control of the devices. The ROM Monitor is the program that initializes the hardware and software on IOS devices, and an attacker who […]