Medium severity · published May 9, 2023
CVE-2021-46759
Improper syscall input validation in AMD TEE (Trusted Execution Environment) may allow an attacker with physical access and control of a Uapp that runs under the bootloader to…
6.1
CVSS
0.3%
EPSS
No
On KEV
Description
Improper syscall input validation in AMD TEE
(Trusted Execution Environment) may allow an attacker with physical access and
control of a Uapp that runs under the bootloader to reveal the contents of the
ASP (AMD Secure Processor) bootloader accessible memory to a serial port,
resulting in a potential loss of integrity.
CVSS vector
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack vector
Physical
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 21% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AG
Athlon Gold 3150g Firmware · Amd
picassopi-fp5_1.0.0.e; pollockpi-ft5_1.0.0.4 · source: NVD
AG
Athlon Gold 3150ge Firmware · Amd
picassopi-fp5_1.0.0.e; pollockpi-ft5_1.0.0.4 · source: NVD
AS
Athlon Silver 3050ge Firmware · Amd
picassopi-fp5_1.0.0.e; pollockpi-ft5_1.0.0.4 · source: NVD
R1
Ryzen 1200 (af) Firmware · Amd
comboam4pi_1.0.0.9; comboam4v2_pi_1.2.0.8; pinnaclepi-am4_1.0.0.d; raven-fp5-am4_1.1.0.f · source: NVD
R1
Ryzen 1600 (af) Firmware · Amd
comboam4pi_1.0.0.9; comboam4v2_pi_1.2.0.8; pinnaclepi-am4_1.0.0.d; raven-fp5-am4_1.1.0.f · source: NVD
R2
Ryzen 2200g Firmware · Amd
comboam4pi_1.0.0.9; comboam4v2_pi_1.2.0.8; pinnaclepi-am4_1.0.0.d; raven-fp5-am4_1.1.0.f · source: NVD
R2
Ryzen 2200ge Firmware · Amd
comboam4pi_1.0.0.9; comboam4v2_pi_1.2.0.8; pinnaclepi-am4_1.0.0.d; raven-fp5-am4_1.1.0.f · source: NVD
R2
Ryzen 2300x Firmware · Amd
comboam4pi_1.0.0.9; comboam4v2_pi_1.2.0.8; pinnaclepi-am4_1.0.0.d; raven-fp5-am4_1.1.0.f · source: NVD
R2
Ryzen 2400g Firmware · Amd
comboam4pi_1.0.0.9; comboam4v2_pi_1.2.0.8; pinnaclepi-am4_1.0.0.d; raven-fp5-am4_1.1.0.f · source: NVD
R2
Ryzen 2400ge Firmware · Amd
comboam4pi_1.0.0.9; comboam4v2_pi_1.2.0.8; pinnaclepi-am4_1.0.0.d; raven-fp5-am4_1.1.0.f · source: NVD
R2
Ryzen 2500x Firmware · Amd
comboam4pi_1.0.0.9; comboam4v2_pi_1.2.0.8; pinnaclepi-am4_1.0.0.d; raven-fp5-am4_1.1.0.f · source: NVD
R2
Ryzen 2600 Firmware · Amd
comboam4pi_1.0.0.9; comboam4v2_pi_1.2.0.8; pinnaclepi-am4_1.0.0.d; raven-fp5-am4_1.1.0.f · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-46759
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-46759
Vendor Advisory
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001
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