Epyc 7763 Firmware
CVE-2024-21980
HIGH
Severity by source
AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
1DescriptionNVD
Improper restriction of write operations in SNP firmware could allow a malicious hypervisor to potentially overwrite a guest's memory or UMC seed resulting in loss of confidentiality and integrity.
AnalysisAI
Improper restriction of write operations in SNP firmware could allow a malicious hypervisor to potentially overwrite a guest's memory or UMC seed resulting in loss of confidentiality and integrity. Rated high severity (CVSS 7.9), this vulnerability is low attack complexity. No vendor patch available.
Technical ContextAI
This vulnerability is classified as Buffer Overflow (CWE-119), which allows attackers to corrupt memory to execute arbitrary code or crash the application. Improper restriction of write operations in SNP firmware could allow a malicious hypervisor to potentially overwrite a guest's memory or UMC seed resulting in loss of confidentiality and integrity. Affected products include: Amd Epyc 7203 Firmware, Amd Epyc 7203P Firmware, Amd Epyc 72F3 Firmware, Amd Epyc 7303 Firmware, Amd Epyc 7303P Firmware.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use memory-safe languages or bounds-checking. Enable ASLR, DEP/NX, stack canaries. Use safe string functions.
More in Epyc 7763 Firmware
View allImproper access control settings in ASP Bootloader may allow an attacker to corrupt the return address causing a stack-b
A side channel vulnerability on some of the AMD CPUs may allow an attacker to influence the return address prediction. R
A malicious hypervisor in conjunction with an unprivileged attacker process inside an SEV/SEV-ES guest VM may fail to fl
Improper input validation in SEV-SNP could allow a malicious hypervisor to read or overwrite guest memory potentially le
Improper input and range checking in the AMD Secure Processor (ASP) boot loader image header may allow an attacker to us
AMD System Management Unit (SMU) contains a potential issue where a malicious user may be able to manipulate mailbox ent
Failure to validate SEV Commands while SNP is active may result in a potential impact to memory integrity. Rated high se
When the AMD Platform Security Processor (PSP) boot rom loads, authenticates, and subsequently decrypts an encrypted FW,
Failure to validate VM_HSAVE_PA during SNP_INIT may result in a loss of memory integrity. Rated high severity (CVSS 7.8)
Improper address validation in ASP with SNP enabled may potentially allow an attacker to compromise guest memory integri
Insufficient DRAM address validation in System Management Unit (SMU) may allow an attacker to read/write from/to an inva
An attacker with a compromised ASP could possibly send malformed commands to an ASP on another CPU, resulting in an out
Same weakness CWE-119 – Buffer Overflow
View allSame technique Buffer Overflow
View allShare
External POC / Exploit Code
Leaving vuln.today