CVE-2022-23817 in Ryzen 3000 Desktop Processors
Summary
by MITRE • 08/13/2024
Insufficient checking of memory buffer in AMD Secure Processor (ASP) Secure OS may allow an attacker with a malicious trusted application to read/write to the ASP Secure OS kernel virtual address space, potentially resulting in privilege escalation.
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Analysis
by VulDB Data Team • 05/17/2026
The vulnerability identified as CVE-2022-23817 represents a critical memory safety issue within the ASP Secure OS operating system environment. This flaw resides in the insufficient validation mechanisms for memory buffer operations, creating a pathway for malicious actors to exploit the system's security boundaries. The ASP Secure OS serves as a specialized operating environment designed to provide enhanced security for sensitive operations, particularly within embedded systems and telecommunications infrastructure where kernel-level access can have severe consequences.
The technical implementation of this vulnerability stems from inadequate memory buffer validation within the secure OS kernel components. When malicious trusted applications attempt to interact with kernel virtual address spaces, the system fails to properly validate memory access boundaries and buffer limits. This insufficient checking allows for potential memory corruption and unauthorized data manipulation within the protected kernel environment. The vulnerability specifically affects the interaction between user-space applications and kernel-space memory management, creating opportunities for attackers to craft malicious trusted applications that can bypass normal security restrictions.
From an operational perspective, this vulnerability presents a significant risk to systems utilizing ASP Secure OS, particularly those deployed in mission-critical environments where security is paramount. An attacker who successfully compromises a trusted application can leverage this flaw to achieve privilege escalation, potentially gaining full control over the underlying system. The implications extend beyond simple data access, as the ability to read and write to kernel virtual address spaces enables attackers to manipulate system internals, modify security policies, and potentially establish persistent backdoors. This vulnerability directly impacts the fundamental security model of the ASP Secure OS by undermining the isolation between trusted applications and the kernel.
The attack surface for this vulnerability aligns with several ATT&CK techniques including privilege escalation through kernel exploits and persistence mechanisms. The weakness maps to CWE-121, which describes stack-based buffer overflow conditions, and CWE-787, which addresses out-of-bounds write operations. Organizations utilizing affected systems should implement immediate mitigations including firmware updates from vendors, deployment of runtime monitoring solutions, and comprehensive security assessments of all trusted applications. The recommended approach involves strengthening memory validation routines, implementing additional access control checks, and establishing robust application whitelisting policies to prevent exploitation of the buffer checking deficiencies. Security teams should also consider network segmentation and continuous monitoring of kernel-level activities to detect potential exploitation attempts.