Epyc 7543 Firmware Security Vulnerabilities
Insufficient input validation in the SMU mayenable a privileged attacker to write beyond the intended bounds of a sharedmemory buffer potentially leading to a loss of integrity.
7.5CVSS
7.9AI Score
0.001EPSS
Improper validation of DRAM addresses in SMU mayallow an attacker to overwrite sensitive memory locations within the ASPpotentially resulting in a denial of service.
7.5CVSS
7.8AI Score
0.001EPSS
Insufficient syscall input validation in the ASPBootloader may allow a privileged attacker to execute arbitrary DMA copies,which can lead to code execution.
8.8CVSS
9.1AI Score
0.001EPSS
Insufficient validation of addresses in AMD Secure Processor (ASP) firmware system call may potentially lead to arbitrary code execution by a compromised user application.
7.8CVSS
7.8AI Score
0.0004EPSS
Insufficient DRAM address validation in SystemManagement Unit (SMU) may allow an attacker to read/write from/to an invalidDRAM address, potentially resulting in denial-of-service.
7.5CVSS
7.8AI Score
0.001EPSS
Improper input validation in ABL may enable anattacker with physical access, to perform arbitrary memory overwrites,potentially leading to a loss of integrity and code execution.
6.8CVSS
7.2AI Score
0.001EPSS
Execution unit scheduler contention may lead to a side channel vulnerability found on AMD CPU microarchitectures codenamed “Zen 1”, “Zen 2” and “Zen 3” that use simultaneous multithreading (SMT). By measuring the contention level on scheduler queues an attacker may potentially leak sensitive inform...
5.6CVSS
5.7AI Score
0.0004EPSS
Insufficient input validation on the modelspecific register: VM_HSAVE_PA may potentially lead to loss of SEV-SNP guestmemory integrity.
7.5CVSS
7.9AI Score
0.001EPSS
IBPB may not prevent return branch predictions from being specified by pre-IBPB branch targets leading to a potential information disclosure.
5.5CVSS
5.6AI Score
0.001EPSS
SMM configuration may not be immutable, as intended, when SNP is enabled resulting in a potential limited loss of guest memory integrity.
5.3CVSS
6.3AI Score
0.0005EPSS
Improper access control settings in ASPBootloader may allow an attacker to corrupt the return address causing astack-based buffer overrun potentially leading to arbitrary code execution.
9.8CVSS
9.6AI Score
0.003EPSS
TOCTOU in the ASP Bootloader may allow an attacker with physical access to tamper with SPI ROM records after memory content verification, potentially leading to loss of confidentiality or a denial of service.
5.7CVSS
6.1AI Score
0.0005EPSS
TOCTOU in the ASP may allow a physical attacker to write beyond the buffer bounds, potentially leading to a loss of integrity or denial of service.
5.7CVSS
6.1AI Score
0.001EPSS
An attacker with a compromised ASP couldpossibly send malformed commands to an ASP on another CPU, resulting in an outof bounds write, potentially leading to a loss a loss of integrity.
7.5CVSS
8AI Score
0.001EPSS
Insufficient syscall input validation in the ASP Bootloader may allow a privileged attacker to read memory outside the bounds of a mapped register potentially leading to a denial of service.
6.5CVSS
6.6AI Score
0.001EPSS
Insufficient input validation in the ASP Bootloader may enable a privileged attacker with physical access to expose the contents of ASP memory potentially leading to a loss of confidentiality.
4.6CVSS
5.9AI Score
0.001EPSS
Improper syscall input validation in the ASP Bootloader may allow a privileged attacker to read memory out-of-bounds, potentially leading to a denial-of-service.
6.5CVSS
6.7AI Score
0.001EPSS
Insufficient input validation in the SMU may allow a physical attacker to exfiltrate SMU memory contents over the I2C bus potentially leading to a loss of confidentiality.
2.4CVSS
4.6AI Score
0.0005EPSS
Insufficient bound checks in the SMU may allow an attacker to update the from/to address space to an invalid value potentially resulting in a denial of service.
7.5CVSS
7.5AI Score
0.001EPSS
Insufficient input validation of BIOS mailbox messages in SMU may result in out-of-bounds memory reads potentially resulting in a denial of service.
7.5CVSS
7.6AI Score
0.001EPSS
Insufficient bound checks in the SMU may allow an attacker to update the SRAM from/to address space to an invalid value potentially resulting in a denial of service.
7.5CVSS
7.5AI Score
0.001EPSS
Insufficient input validation in the SMU may allow an attacker to improperly lock resources, potentially resulting in a denial of service.
5.3CVSS
5.9AI Score
0.001EPSS
Insufficient DRAM address validation in SystemManagement Unit (SMU) may allow an attacker to read/write from/to an invalidDRAM address, potentially resulting in denial-of-service.
7.5CVSS
7.5AI Score
0.001EPSS
Improper address validation in ASP with SNP enabled may potentially allow an attacker to compromise guest memory integrity.
7.5CVSS
7.1AI Score
0.0005EPSS
A side channel vulnerability on some of the AMD CPUs may allow an attacker to influence the return address prediction. This may result in speculative execution at an attacker-controlled address, potentially leading to information disclosure.
4.7CVSS
6.6AI Score
0.0004EPSS
A privileged attackercan prevent delivery of debug exceptions to SEV-SNP guests potentiallyresulting in guests not receiving expected debug information.
3.2CVSS
4AI Score
0.0004EPSS
A potential power side-channel vulnerability in some AMD processors may allow an authenticated attacker to use the power reporting functionality to monitor a program’s execution inside an AMD SEV VM potentially resulting in a leak of sensitive information.
6.5CVSS
6.3AI Score
0.001EPSS
Improper or unexpected behavior of the INVD instruction in some AMD CPUs may allow an attacker with a malicious hypervisor to affect cache line write-back behavior of the CPU leading to a potential loss of guest virtual machine (VM) memory integrity.
6.5CVSS
6.5AI Score
0.0005EPSS
Improper initialization of variables in the DXE driver may allow a privileged user to leak sensitive information via local access.
4.4CVSS
4.5AI Score
0.0004EPSS