AMD ‘Zenbleed’ exploit can leak passwords and encryption keys from Ryzen CPUs
The entire Zen 2 product stack is impacted by the vulnerability, including all processors within the AMD Ryzen 3000 / 4000 / 5000 / 7020 series, the Ryzen Pro 3000 / 4000 series, and AMD’s EPYC “Rome” data center processors. AMD has sinceits anticipated release timeline for patching out the exploit, with most firmware updates not expected to arrive until later this year.
Zenbleed can allow attackers to steal data from any software running on an impacted system, including cloud-hosted services, the Zenbleed exploit doesn’t require physical access to a user’s computer to attack their system, and can even be executed remotely through Javascript on a webpage. If successfully executed, the exploit allows data to be transferred at a rate of 30 kb per core, per second.
Worse still — Zenbleed can fly under the radar because it doesn’t require any special system calls or privileges to exploit. “I am not aware of any reliable techniques to detect exploitation,” said Ormandy. The bug shares some similarities with the
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