#VU63732 Permissions, Privileges, and Access Controls in AMD products - CVE-2021-26363
Vulnerability identifier: #VU63732
Vulnerability risk: Low
CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2021-26363
CWE-ID:
CWE-264
Exploitation vector: Local
Exploit availability: No
Vulnerable software:
AMD Ryzen 5000 Series Desktop processor with Radeon graphics
Hardware solutions /
Firmware
AMD Ryzen 3000 Series Mobile processor with Radeon graphics
Hardware solutions /
Firmware
AMD Ryzen 5000 Series Mobile processor with Radeon graphics
Hardware solutions /
Firmware
Vendor: AMD
Description
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to improper access restrictions. A malicious or compromised UApp or ABL can modify value used by ASP for its reserved DRAM to one outside of the
fenced area and gain access to sensitive information.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
AMD Ryzen 5000 Series Desktop processor with Radeon graphics: All versions
AMD Ryzen 3000 Series Mobile processor with Radeon graphics: All versions
AMD Ryzen 5000 Series Mobile processor with Radeon graphics: All versions
External links
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1027
Q & A
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.
