PT-2023-7412 · Amd+7 · Amd Cpus+7
Andreas Kogler
+7
·
Published
2023-11-14
·
Updated
2025-02-12
·
CVE-2023-20592
CVSS v2.0
6.8
Medium
| Vector | AV:N/AC:L/Au:S/C:N/I:C/A:N |
Name of the Vulnerable Software and Affected Versions
AMD CPUs (affected versions not specified)
Description
The issue concerns improper or unexpected behavior of the INVD instruction in some AMD CPUs, potentially allowing an attacker with a malicious hypervisor to affect cache line write-back behavior of the CPU. This could lead to a loss of guest virtual machine (VM) memory integrity. The vulnerability, known as CacheWarp, affects AMD's Secure Encrypted Virtualization (SEV) technology, which is designed to protect against malicious hypervisors and reduce the attack surface of virtual machines by encrypting data. CacheWarp can be exploited to escalate privileges, execute remote code, and bypass authentication in virtual machines. The attack involves manipulating cache lines and exploiting the INVD instruction to alter the behavior of the CPU, potentially allowing attackers to gain control over virtual machines and access sensitive data.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
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Weakness Enumeration
Related Identifiers
Affected Products
Amd Cpus
Almalinux
Astra Linux
Centos
Red Hat
Red Os
Rocky Linux
Suse