CVE-2022-29792 in HarmonyOS
Summary
by MITRE • 05/13/2022
The chip component has a vulnerability of disclosing CPU SNs.Successful exploitation of this vulnerability may affect data confidentiality.
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Analysis
by VulDB Data Team • 05/16/2022
The vulnerability identified as CVE-2022-29792 represents a critical disclosure issue within chip components that exposes CPU serial numbers, fundamentally compromising data confidentiality assurances. This vulnerability resides in the hardware-level implementation of processor identification mechanisms, where the chip's design fails to properly secure or obfuscate serial number information that should remain protected from unauthorized access. The flaw manifests at the microarchitecture level where CPU serial numbers are stored or transmitted in a manner that allows adversaries to extract this sensitive identification data without proper authorization. This type of vulnerability directly impacts the security posture of computing systems by potentially enabling attackers to track specific hardware components across different environments, facilitating targeted attacks and compromising the anonymity of users who rely on hardware-level protections for their privacy.
The technical implementation of this vulnerability stems from inadequate protection mechanisms within the chip's firmware or hardware design that govern how CPU serial numbers are managed and accessed. When a system processes or communicates CPU identification data, the vulnerability allows unauthorized parties to intercept or extract this information through various attack vectors including direct memory access, firmware analysis, or exploitation of insufficient access controls. The flaw essentially creates a pathway for information disclosure where the normally protected serial number data becomes accessible to entities that should not have access to such identifying information. This vulnerability can be classified under CWE-200, which specifically addresses "Information Exposure" and represents a failure to properly protect sensitive data elements within computing systems. The exploitation of this vulnerability can enable adversaries to gather detailed information about specific processor implementations, potentially allowing for more sophisticated attacks that target particular hardware configurations or manufacturing batches.
The operational impact of CVE-2022-29792 extends beyond simple information disclosure to encompass broader security implications for system integrity and user privacy. When CPU serial numbers are exposed, attackers can leverage this information to conduct device fingerprinting activities, track specific machines across different network environments, or correlate this data with other security incidents to build comprehensive profiles of target systems. This vulnerability particularly affects systems where hardware-level identification is critical for security controls, as it undermines the fundamental assumptions about hardware isolation and confidentiality that modern computing environments rely upon. The disclosure of CPU serial numbers can facilitate supply chain attacks where adversaries target specific hardware components, or enable more sophisticated social engineering campaigns that exploit the unique identification characteristics of particular processors. Organizations may face compliance issues with privacy regulations and security standards that mandate protection of identifying hardware information, making this vulnerability particularly concerning for regulated environments.
Mitigation strategies for CVE-2022-29792 require both hardware-level and software-level interventions to protect CPU serial number information from unauthorized disclosure. System administrators should implement firmware updates from vendors that address the specific information exposure vulnerability in the chip component, ensuring that updated firmware properly secures serial number data through appropriate access controls and encryption mechanisms. The implementation of hardware security modules or trusted platform modules can provide additional protection layers for sensitive identification data, while access control policies should be strengthened to limit who can query or extract CPU identification information from system components. Organizations should also consider implementing network monitoring solutions that can detect unusual patterns of serial number access or extraction attempts, providing early warning capabilities for potential exploitation of this vulnerability. Additionally, the vulnerability's impact aligns with ATT&CK technique T1082, which covers "System Information Discovery" and suggests that organizations need to implement comprehensive monitoring of system enumeration activities that could indicate exploitation attempts. Regular security assessments should include verification that CPU serial number information is properly protected and that no unauthorized access pathways exist, ensuring that the vulnerability remains mitigated through proper system hardening practices and continuous security monitoring.