Of course, for your regular use, and in particular on your PC, if you use AMD CPUs, it is recommended that you keep your BIOS up to date, as some BIOS updates will have patches for these bugs. High Severity bugs like this one are “good” news for hackers who might be able to leverage them, possibly combining them with former discovered vulnerabilities. The main benefit of SMM is that it offers a distinct and easily isolated processor environment that operates transparently to the operating system or executive and software applications. It is intended for use only by system firmware ( BIOS or UEFI), not by applications software or general-purpose systems software. SMM is a special-purpose operating mode provided for handling system-wide functions like power management, system hardware control, or proprietary OEM designed code. Insufficient control flow management in AmdCpmGpioInitSmm may allow a privileged attacker to tamper with the SMM handler potentially leading to escalation of privileges. Insufficient control flow management in AmdCpmOemSmm may allow a privileged attacker to tamper with the SMM handler potentially leading to an escalation of privileges. Two vulnerabilities were added to the list in the past few weeks, specifically: Which AMD vulnerabilities were added in 2023? As demonstrated by the Nintendo Switch hack, hardware hacks can be very powerful, and extremely hard to patch for console manufacturers. As such, vulnerabilities on AMD’s Ryzen series are likely to impact the PS5 as well.Ī Critical, and exploitable bug on such a processor could help hardware hackers to hijack the console at startup, and potentially dump critical information from the PS5, for future hacking. This is interesting for the PS5 scene because the PS5 APU is a semi-custom processor by AMD, which is known to be based on the Zen 2 architecture. What are AMD Vulnerabilities and why does the PS5 Scene care?īugs in AMD Ryzen CPUs, its Secure Processor (SP), or System Management Unit (SMU) could lead to critical, difficult to patch vulnerabilities for the systems using these CPUs. Two new vulnerabilities have been added to the page, late March. If you have further questions or concerns, feel free to open a support ticket or reach out on our public Slack community.AMD have updated their CVE page for vulnerabilities impacting Ryzen CPUs a few weeks ago, as pointed out by by Zecoxao. If your instance was patched, we advise you to engage your incident response process-at a minimum, rotate your secrets and keep an eye on your logs and other observability tooling. ⚠️ Note that it is not possible to know whether the vulnerability was exploited on a given instance. Furthermore, AMD have released an official microcode update for the affected processors and we will be applying that update over the course of the day (25 July 2023). If the model name is either of “AMD EPYC 7282" or "AMD EPYC 7402P”, you can expect a slight performance impact as a result of the mitigation. The vulnerability, as described by AMD in a security bulletin, occurs 'Under specific microarchitectural circumstances, a register in Zen 2 CPUs may not be written to 0 correctly. ![]() You can check to see if your instance was patched by verifying the output of lscpu from the command line. In brief: AMD has confirmed that a microarchitecture optimization inside Zen 3 CPUs can be exploited in a similar fashion to the Spectre vulnerabilities that plagued Intel CPUs a few generations. AMD has kicked off a busy Patch Tuesday by disclosing INCEPTION, a new speculative side channel attack affecting Zen 3 and Zen 4 processors that require new microcode while prior Zen CPUs require a kernel-based solution. Scaleway engaged our incident response process and by 17:20 UTC all affected machines were patched in order to mitigate the vulnerability. AMD 'INCEPTION' CPU Vulnerability Disclosed. Through a modern, deliberate approach, AMD Ryzen processor architecture is designed from the ground up with security features as a priority to help reduce exposure to today’s sophisticated attacks. If exploited, the vulnerability could allow data to leak between instances, potentially exposing sensitive data if timed correctly. This vulnerability affects a number of AMD processors present in some-but not all-of our DEV1, GP1, and VC Instance offers. On 24 July 2023 at 14:28 UTC, a vulnerability known as Zenbleed was made public on the Openwall security mailing list.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |