Amd Epyc 7473X Firmware vulnerabilities

CVE-2023-20520 [CRITICAL] CWE-787 CVE-2023-20520: Improper access control settings in ASP Bootloader may allow an attacker to corrupt the return addre 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 execution.

CVE-2021-46762 [LOW] CWE-20 CVE-2021-46762: Insufficient input validation in the SMU may allow an attacker to corrupt SMU SRAM potentially leadi Insufficient input validation in the SMU may allow an attacker to corrupt SMU SRAM potentially leading to a loss of integrity or denial of service.

CVE-2021-46769 [HIGH] CWE-20 CVE-2021-46769: Insufficient syscall input validation in the ASP Bootloader may allow a privileged attacker to execu Insufficient syscall input validation in the ASP Bootloader may allow a privileged attacker to execute arbitrary DMA copies, which can lead to code execution.

CVE-2021-46764 [HIGH] CWE-787 CVE-2021-46764: Improper validation of DRAM addresses in SMU may allow an attacker to overwrite sensitive memory loc 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 service.

CVE-2021-26397 [HIGH] CVE-2021-26397: Insufficient address validation, may allow an attacker with a compromised ABL and UApp to corrupt se 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 availability.

CVE-2023-20524 [HIGH] CWE-787 CVE-2023-20524: An attacker with a compromised ASP could possibly send malformed commands to an ASP on another CPU, 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 integrity.

CVE-2021-26356 [HIGH] CWE-367 CVE-2021-26356: A TOCTOU in ASP bootloader may allow an attacker to tamper with the SPI ROM following data read to m 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 disclosure.

CVE-2022-23818 [HIGH] CWE-20 CVE-2022-23818: Insufficient input validation on the model specific register: VM_HSAVE_PA may potentially lead to lo Insufficient input validation on the model specific register: VM_HSAVE_PA may potentially lead to loss of SEV-SNP guest memory integrity.

CVE-2021-46763 [HIGH] CWE-787 CVE-2021-46763: Insufficient input validation in the SMU may enable a privileged attacker to write beyond the intend 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 integrity.

CVE-2021-46775 [MEDIUM] CWE-20 CVE-2021-46775: Improper input validation in ABL may enable an attacker with physical access, to perform arbitrary m 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 execution.

CVE-2021-26354 [MEDIUM] CWE-120 CVE-2021-26354: Insufficient bounds checking in ASP may allow an attacker to issue a system call from a compromised 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 integrity.

CVE-2021-26371 [MEDIUM] CVE-2021-26371: A compromised or malicious ABL or UApp could send a SHA256 system call to the bootloader, which may 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 disclosure.

CVE-2021-26404 [MEDIUM] CWE-20 CVE-2021-26404: Improper input validation and bounds checking in SEV firmware may leak scratch buffer bytes leading Improper input validation and bounds checking in SEV firmware may leak scratch buffer bytes leading to potential information disclosure.

CVE-2021-26339 [MEDIUM] CVE-2021-26339: A bug in AMD CPU’s core logic may allow for an attacker, using specific code from an unprivileged VM 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 compilers.

CVE-2021-26347 [MEDIUM] CWE-1284 CVE-2021-26347: Failure to validate the integer operand in ASP (AMD Secure Processor) bootloader may allow an attack 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 service.

CVE-2021-26373 [MEDIUM] CWE-20 CVE-2021-26373: Insufficient bound checks in the System Management Unit (SMU) may result in a system voltage malfunc 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 service.

CVE-2021-26348 [MEDIUM] CVE-2021-26348: Failure to flush the Translation Lookaside Buffer (TLB) of the I/O memory management unit (IOMMU) ma 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 integrity.

CVE-2021-26349 [MEDIUM] CVE-2021-26349: Failure to assign a new report ID to an imported guest may potentially result in an SEV-SNP guest VM 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 (MA).

CVE-2021-26350 [MEDIUM] CWE-367 CVE-2021-26350: A TOCTOU race condition in SMU may allow for the caller to obtain and manipulate the address of a me 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 service.

CVE-2021-26372 [MEDIUM] CWE-119 CVE-2021-26372: Insufficient bound checks related to PCIE in the System Management Unit (SMU) may result in access t 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 service.