Submitted via IRC for TheMightyBuzzard
AMD has fixed, but not yet released BIOS/UEFI/firmware updates for the general public for a security flaw affecting the AMD Secure Processor.
[...] Cfir Cohen, a security researcher with the Google Cloud Security Team, says he discovered a vulnerability in the Trusted Platform Module (TPM) of the AMD Secure Processor. The TPM is a component to store critical system data such as passwords, certificates, and encryption keys, in a secure environment and outside of the more easily accessible AMD cores.
"Through manual static analysis, we've found a stack-based overflow in the function EkCheckCurrentCert," Cohen says. The researcher claims that an attacker could use specially-crafted EK certificates to get remote code execution rights on the AMD Secure Processor, allowing him to compromise its security.
Cohen said that some basic mitigation techniques such as "stack cookies, NX stack, ASLR" were not implemented in AMD's Secure Processor, making exploitation trivial.
takyon: This bug is unrelated to Meltdown and Spectre. And you might be interested in this:
Source: Security Flaw in AMD's Secure Chip-On-Chip Processor Disclosed Online
(Score: 2) by Runaway1956 on Sunday January 07 2018, @09:57PM
Are you sure about that? When I first discovered the script kiddies, I was contemptuous of them, like almost everyone else. But, SOMEONE developed the exploits that the script kiddies used. In this case, it will take a pretty smart individual to set the script up, but once the script is built, the script kiddy needs understand diddly. He gains access to a machine, boots, flashes, reboots, and watches shit happen automagically. The brighter kiddies may customize the script, to some extent.