CVE-2022-21233 in Intel
Summary
by MITRE • 08/19/2022
Improper isolation of shared resources in some Intel(R) Processors may allow a privileged user to potentially enable information disclosure via local access.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 04/24/2026
The vulnerability identified as CVE-2022-21233 represents a critical flaw in Intel processor architecture that compromises the isolation of shared system resources. This issue affects Intel processors that implement hardware-based memory management and resource sharing mechanisms, creating potential pathways for unauthorized information disclosure. The vulnerability stems from inadequate protection measures that fail to properly separate critical system components, allowing malicious actors with privileged access to exploit these gaps in resource management. The flaw specifically impacts processors that utilize shared execution units, cache hierarchies, and memory management units where proper isolation boundaries have been compromised.
Technical exploitation of CVE-2022-21233 occurs through the manipulation of processor resource sharing mechanisms that are designed to optimize performance while maintaining security boundaries. Attackers with local privileged access can leverage this vulnerability to access sensitive data that should remain isolated within different execution contexts. The underlying issue manifests in how the processor handles shared resources such as instruction caches, data caches, and memory translation tables, where insufficient isolation allows for information leakage between different privilege levels or security domains. This vulnerability is particularly concerning because it operates at the hardware level, making traditional software-based mitigations less effective and requiring architectural modifications to address properly.
The operational impact of this vulnerability extends beyond simple information disclosure, potentially enabling more sophisticated attacks that exploit the compromised isolation boundaries. Systems utilizing affected Intel processors may experience unauthorized access to confidential data, including cryptographic keys, user credentials, and sensitive system information that should remain protected. The vulnerability affects various computing environments including servers, workstations, and embedded systems where Intel processors are deployed, creating widespread potential for exploitation across different threat scenarios. Organizations running critical infrastructure or handling sensitive data face increased risk of data breaches and unauthorized information access that could compromise their security posture significantly.
Mitigation strategies for CVE-2022-21233 require a multi-layered approach combining firmware updates, microcode patches, and system hardening measures. Intel has released microcode updates and firmware patches specifically designed to address the resource isolation gaps in affected processors, which must be applied promptly across all vulnerable systems. System administrators should implement strict access controls and privilege management to limit potential exploitation vectors, while also monitoring system logs for suspicious activities that may indicate attempted exploitation. The vulnerability aligns with CWE-284 which addresses improper access control in system resources, and relates to ATT&CK techniques involving privilege escalation and credential access. Organizations should conduct thorough vulnerability assessments to identify all affected systems and establish monitoring procedures to detect potential exploitation attempts. Regular security audits and patch management processes become critical for maintaining system integrity and preventing unauthorized access through this hardware-level vulnerability.