Vulnerability identifier: #VU103603
Vulnerability risk: Low
CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID:
CWE-ID:
CWE-347
Exploitation vector: Local
Exploit availability: No
Vulnerable software:
1st Gen AMD EPYC Processors
Hardware solutions /
Firmware
2nd Gen AMD EPYC Processors
Hardware solutions /
Firmware
3rd Gen AMD EPYC Processors
Hardware solutions /
Firmware
4th Gen AMD EPYC Processors
Hardware solutions /
Firmware
AMD EPYC Embedded 7002
Hardware solutions /
Firmware
AMD EPYC Embedded 7003
Hardware solutions /
Firmware
AMD EPYC Embedded 9004
Hardware solutions /
Firmware
Vendor:
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to improper verification of cryptographic signature in AMD CPU ROM microcode patch loader. A local privileged user can load a malicious CPU microcode and escalate privileges on the system.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
External links
http://www.amd.com/en/resources/product-security/bulletin/amd-sb-3019.html
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.