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Rewterz Threat Advisory – CVE-2021-26354 – Multiple AMD Chipsets Vulnerability

Severity

Medium

Analysis Summary

CVE-2021-26354

Multiple AMD chipsets could allow a local attacker to bypass security restrictions, caused by improper bounds checking in ASP. By sending a specially-crafted request using a system call from a compromised ABL, an attacker could exploit this vulnerability to cause arbitrary memory values to be initialized to zero.

Impact

  • Security Bypass

Indicators Of Compromise

CVE

  • CVE-2021-26354

Affected Vendors

Amd

Affected Products

  • AMD Ryzen 1000 series Processor
  • AMD 1st Generation EPYC
  • AMD Athlon 3000 Series
  • AMD Ryzen 2000 Series processors
  • AMD Ryzen Threadripper 2nd gen processors
  • AMD Ryzen 5000 Series Mobile Processors with Radeon Graphics
  • AMD Ryzen 3000 Series Mobile Processors with Radeon Graphics

Remediation

Refer to AMD Security Advisory for patch, upgrade or suggested workaround information.

AMD Security Advisory 3001

AMD Security Advisory 4001

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