Code Injection in AMD products - CVE-2021-26311
Published: May 17, 2021 / Updated: March 22, 2022
Vulnerability identifier: #VU53293
CSH Severity: Low
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-26311
CWE-ID: CWE-94
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary code on the target system.
The vulnerability exists due to the memory can be rearranged in the guest address space that is not detected by the attestation mechanism in the AMD SEV/SEV-ES feature. A remote administrator can execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
AMD EPYC Embedded Processors
3rd Gen AMD EPYC Processors
2nd Gen AMD EPYC Processors
1st Gen AMD EPYC Processors
ThinkSystem SR665
ThinkSystem SR635
ThinkSystem SR645
ThinkSystem SR655
ThinkAgile HX3376 Certified Node
ThinkAgile HX3375 Appliance
3rd Gen AMD EPYC Processors
2nd Gen AMD EPYC Processors
1st Gen AMD EPYC Processors
ThinkSystem SR665
ThinkSystem SR635
ThinkSystem SR645
ThinkSystem SR655
ThinkAgile HX3376 Certified Node
ThinkAgile HX3375 Appliance
How to mitigate CVE-2021-26311
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.