Multiple vulnerabilities in AMD CPUs
| Risk | Low |
| Patch available | NO |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2020-12965 CVE-2021-26318 |
| CWE-ID | CWE-200 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software Subscribe |
AMD CPU Firmware Hardware solutions / Firmware |
| Vendor | AMD |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Information disclosure
EUVDB-ID: #VU57349
Risk: Low
CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:U/RC:C]
CVE-ID: CVE-2020-12965
CWE-ID:
CWE-200 - Information exposure
Exploit availability: No
DescriptionThe vulnerability allows a local attacker to gain access to potentially sensitive information.
The vulnerability exists due to CPUs transiently execute non-canonical loads using only the lower 48 address bits. A local attacker can gain unauthorized access to sensitive information on the system.
MitigationCybersecurity Help is currently unaware of any official solution to address this vulnerability.
Vulnerable software versionsAMD CPU Firmware: All versions
External linkshttp://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1010
http://www.amd.com/system/files/documents/security-whitepaper.pdf
http://developer.amd.com/wp-content/resources/90343-D_SoftwareTechniquesforManagingSpeculation_WP_9-20Update_R2.pdf
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.
2) Information disclosure
EUVDB-ID: #VU57350
Risk: Low
CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:U/RC:C]
CVE-ID: CVE-2021-26318
CWE-ID:
CWE-200 - Information exposure
Exploit availability: No
DescriptionThe vulnerability allows a local attacker to gain access to potentially sensitive information.
The vulnerability exists due to a timing and power-based side channel attack. A local attacker can leverage the x86 PREFETCH instructions and obtain kernel address space information.
MitigationCybersecurity Help is currently unaware of any official solution to address this vulnerability.
Vulnerable software versionsAMD CPU Firmware: All versions
External linkshttp://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1017
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.
