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  • F-Secure : The Counterfeit Cisco network devices

    Posted on Alex5723 Comment on the AskWoody Lounge

    Home Forums Networking – routers, firewalls, network configuration F-Secure : The Counterfeit Cisco network devices

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      • #2280746
        AskWoody Plus

        In fall 2019, an IT company found some network switches failing after a software upgrade. The company would find out later that they had inadvertently procured suspected counterfeit Cisco equipment. The hardware failure initiated a wider investigation to which the F-Secure Hardware Security team was called and asked to analyse the suspected counterfeit Cisco Catalyst 2960-X series switches and, primarily, provide evidence as to whether any kind of a “backdoor” functionality existed in those devices….we identified the full exploit chain that allowed one of the forged products to function: a previously undocumented vulnerability in a security component allowing for the devices Secure Boot restrictions to be bypassed.

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