Epyc 7473x Firmware Security Vulnerabilities
A privileged attacker can prevent delivery of debug exceptions to SEV-SNP guests potentially resulting in guests not receiving expected debug...
3.2CVSS
4AI Score
0.0004EPSS
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...
6.5CVSS
6.5AI Score
0.0005EPSS
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...
5.7CVSS
6.1AI Score
0.0005EPSS
Insufficient DRAM address validation in System Management Unit (SMU) may allow an attacker to read/write from/to an invalid DRAM address, potentially resulting in...
7.5CVSS
7.5AI Score
0.001EPSS
Improper address validation in ASP with SNP enabled may potentially allow an attacker to compromise guest memory...
7.5CVSS
7.1AI Score
0.0005EPSS
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...
4.6CVSS
5.9AI Score
0.001EPSS
SMM configuration may not be immutable, as intended, when SNP is enabled resulting in a potential limited loss of guest memory...
5.3CVSS
6.3AI Score
0.0005EPSS
Insufficient DRAM address validation in System Management Unit (SMU) may allow an attacker to read/write from/to an invalid DRAM address, potentially resulting in...
7.5CVSS
7.8AI Score
0.001EPSS
Failure to validate the value in APCB may allow a privileged attacker to tamper with the APCB token to force an out-of-bounds memory read potentially resulting in a denial of...
4.9CVSS
6.1AI Score
0.0004EPSS
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...
4.7CVSS
6.6AI 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...
6.5CVSS
6.3AI Score
0.001EPSS
Insufficient validation of inputs in SVC_MAP_USER_STACK in the ASP (AMD Secure Processor) bootloader may allow an attacker with a malicious Uapp or ABL to send malformed or invalid syscall to the bootloader resulting in a potential denial of service and loss of...
9.1CVSS
9.1AI Score
0.001EPSS
Improper access control settings in ASP Bootloader may allow an attacker to corrupt the return address causing a stack-based buffer overrun potentially leading to arbitrary code...
9.8CVSS
9.6AI Score
0.003EPSS
Insufficient input validation on the model specific register: VM_HSAVE_PA may potentially lead to loss of SEV-SNP guest memory...
7.5CVSS
7.9AI Score
0.001EPSS
Insufficient input validation in the SMU may enable a privileged attacker to write beyond the intended bounds of a shared memory buffer potentially leading to a loss of...
7.5CVSS
7.9AI Score
0.001EPSS
Insufficient syscall input validation in the ASP Bootloader may allow a privileged attacker to execute arbitrary DMA copies, which can lead to code...
8.8CVSS
9.1AI Score
0.001EPSS
Improper input validation in ABL may enable an attacker with physical access, to perform arbitrary memory overwrites, potentially leading to a loss of integrity and code...
6.8CVSS
7.2AI Score
0.001EPSS
Improper validation of DRAM addresses in SMU may allow an attacker to overwrite sensitive memory locations within the ASP potentially resulting in a denial of...
7.5CVSS
7.8AI Score
0.001EPSS
An attacker with a compromised ASP could possibly send malformed commands to an ASP on another CPU, resulting in an out of bounds write, potentially leading to a loss a loss of...
7.5CVSS
8AI Score
0.001EPSS
Insufficient input validation in the SMU may allow an attacker to corrupt SMU SRAM potentially leading to a loss of integrity or denial of...
9.1CVSS
6.4AI Score
0.001EPSS
Insufficient bounds checking in ASP may allow an attacker to issue a system call from a compromised ABL which may cause arbitrary memory values to be initialized to zero, potentially leading to a loss of...
5.5CVSS
7.2AI Score
0.0004EPSS
Insufficient input validation of mailbox data in the SMU may allow an attacker to coerce the SMU to corrupt SMRAM, potentially leading to a loss of integrity and privilege...
9.8CVSS
9.3AI Score
0.002EPSS
Insufficient address validation, may allow an attacker with a compromised ABL and UApp to corrupt sensitive memory locations potentially resulting in a loss of integrity or...
7.1CVSS
7.3AI Score
0.0004EPSS
A TOCTOU in ASP bootloader may allow an attacker to tamper with the SPI ROM following data read to memory potentially resulting in S3 data corruption and information...
7.4CVSS
8.4AI Score
0.002EPSS
A compromised or malicious ABL or UApp could send a SHA256 system call to the bootloader, which may result in exposure of ASP memory to userspace, potentially leading to information...
5.5CVSS
7.1AI Score
0.0004EPSS
Improper input validation and bounds checking in SEV firmware may leak scratch buffer bytes leading to potential information...
5.5CVSS
6.2AI Score
0.0004EPSS
IBPB may not prevent return branch predictions from being specified by pre-IBPB branch targets leading to a potential information...
5.5CVSS
5.6AI 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...
5.6CVSS
5.7AI Score
0.0004EPSS
A TOCTOU race condition in SMU may allow for the caller to obtain and manipulate the address of a message port register which may result in a potential denial of...
4.7CVSS
5.3AI Score
0.0004EPSS
Improper validation of the BIOS directory may allow for searches to read beyond the directory table copy in RAM, exposing out of bounds memory contents, resulting in a potential denial of...
5.5CVSS
5.8AI Score
0.0004EPSS
Insufficient checks in System Management Unit (SMU) FeatureConfig may result in reenabling features potentially resulting in denial of resources and/or denial of...
5.5CVSS
5.9AI Score
0.0004EPSS
Insufficient General Purpose IO (GPIO) bounds check in System Management Unit (SMU) may result in access/updates from/to invalid address space that could result in denial of...
5.5CVSS
5.8AI Score
0.0004EPSS
Insufficient bounds checking in an SMU mailbox register could allow an attacker to potentially read outside of the SRAM address range which could result in an exception handling leading to a potential denial of...
5.5CVSS
5.7AI Score
0.0004EPSS
Insufficient bound checks related to PCIE in the System Management Unit (SMU) may result in access to an invalid address space that could result in denial of...
5.5CVSS
5.8AI Score
0.0004EPSS
Insufficient bound checks in the System Management Unit (SMU) may result in a system voltage malfunction that could result in denial of resources and/or possibly denial of...
5.5CVSS
5.9AI Score
0.0004EPSS
Failure to flush the Translation Lookaside Buffer (TLB) of the I/O memory management unit (IOMMU) may lead an IO device to write to memory it should not be able to access, resulting in a potential loss of...
5.5CVSS
5.8AI Score
0.0004EPSS
A bug in AMD CPU’s core logic may allow for an attacker, using specific code from an unprivileged VM, to trigger a CPU core hang resulting in a potential denial of service. AMD believes the specific code includes a specific x86 instruction sequence that would not be generated by...
5.5CVSS
5.9AI Score
0.0004EPSS
In SEV guest VMs, the CPU may fail to flush the Translation Lookaside Buffer (TLB) following a particular sequence of operations that includes creation of a new virtual machine control block (VMCB). The failure to flush the TLB may cause the microcode to use stale TLB translations which may allow.....
3.3CVSS
5AI Score
0.0004EPSS
Failure to validate the integer operand in ASP (AMD Secure Processor) bootloader may allow an attacker to introduce an integer overflow in the L2 directory table in SPI flash resulting in a potential denial of...
4.7CVSS
5.5AI Score
0.0004EPSS
Insufficient bound checks in the System Management Unit (SMU) may result in access to an invalid address space that could result in denial of...
5.5CVSS
5.8AI Score
0.0004EPSS
Failure to assign a new report ID to an imported guest may potentially result in an SEV-SNP guest VM being tricked into trusting a dishonest Migration Agent...
5.5CVSS
5.8AI Score
0.0004EPSS
Insufficient validation of addresses in AMD Secure Processor (ASP) firmware system call may potentially lead to arbitrary code execution by a compromised user...
7.8CVSS
7.8AI Score
0.0004EPSS
Failure to validate inputs in SMM may allow an attacker to create a mishandled error leaving the DRTM UApp in a partially initialized state potentially resulting in loss of memory...
7.8CVSS
7.7AI Score
0.0004EPSS
Failure to verify SEV-ES TMR is not in MMIO space, SEV-ES FW could result in a potential loss of integrity or...
7.1CVSS
7AI Score
0.0004EPSS
Improper validation of destination address in SVC_LOAD_FW_IMAGE_BY_INSTANCE and SVC_LOAD_BINARY_BY_ATTRIB in a malicious UApp or ABL may allow an attacker to overwrite arbitrary bootloader memory with SPI ROM contents resulting in a loss of integrity and...
7.1CVSS
7.1AI Score
0.0004EPSS
A bug with the SEV-ES TMR may lead to a potential loss of memory integrity for SNP-active...
7.8CVSS
7.5AI Score
0.0004EPSS