Amd: >> Epyc 7301 Firmware Security Vulnerabilities
A potential vulnerability in some AMD processors using frequency scaling may allow an authenticated attacker to execute a timing attack to potentially enable information disclosure.
CVSS Score
6.5
EPSS Score
0.007
Published
2022-06-15
An attacker with access to a malicious hypervisor may be able to infer data values used in a SEV guest on AMD CPUs by monitoring ciphertext values over time.
CVSS Score
6.5
EPSS Score
0.001
Published
2022-05-11
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 for disclosure of SEV guest memory contents. Users of SEV-ES/SEV-SNP guest VMs are not impacted by this vulnerability.
CVSS Score
3.3
EPSS Score
0.001
Published
2022-05-11
Insufficient validation of elliptic curve points in SEV-legacy firmware may compromise SEV-legacy guest migration potentially resulting in loss of guest's integrity or confidentiality.
CVSS Score
7.1
EPSS Score
0.001
Published
2022-05-10
LFENCE/JMP (mitigation V2-2) may not sufficiently mitigate CVE-2017-5715 on some AMD CPUs.
CVSS Score
5.6
EPSS Score
0.001
Published
2022-03-11
Some AMD CPUs may transiently execute beyond unconditional direct branches, which may potentially result in data leakage.
CVSS Score
6.5
EPSS Score
0.001
Published
2022-03-11
AMD EPYC™ Processors contain an information disclosure vulnerability in the Secure Encrypted Virtualization with Encrypted State (SEV-ES) and Secure Encrypted Virtualization with Secure Nested Paging (SEV-SNP). A local authenticated attacker could potentially exploit this vulnerability leading to leaking guest data by the malicious hypervisor.
CVSS Score
5.5
EPSS Score
0.001
Published
2022-02-04
A malicious hypervisor in conjunction with an unprivileged attacker process inside an SEV/SEV-ES guest VM may fail to flush the Translation Lookaside Buffer (TLB) resulting in unexpected behavior inside the virtual machine (VM).
CVSS Score
8.4
EPSS Score
0.001
Published
2021-12-10
AMD System Management Unit (SMU) may experience a heap-based overflow which may result in a loss of resources.
CVSS Score
5.5
EPSS Score
0.001
Published
2021-11-16
AMD System Management Unit (SMU) contains a potential issue where a malicious user may be able to manipulate mailbox entries leading to arbitrary code execution.
CVSS Score
7.8
EPSS Score
0.001
Published
2021-11-16