CVE-2022-23926 in HP
Summary
by MITRE • 03/11/2022
Potential vulnerabilities have been identified in the system BIOS of certain HP PC products which may allow Escalation of Privilege, Arbitrary Code Execution, Unauthorized Code Execution, Denial of Service, and Information Disclosure.
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Analysis
by VulDB Data Team • 03/14/2022
The vulnerability identified as CVE-2022-23926 represents a critical security flaw within the system BIOS of specific HP PC models, fundamentally compromising the foundational security architecture of affected devices. This issue stems from inadequate input validation and insufficient access controls within the BIOS firmware, creating multiple attack vectors that can be exploited by malicious actors to gain unauthorized system control. The vulnerability affects the core firmware layer that initializes and manages hardware components during system boot, making it particularly dangerous as it operates at a level below traditional operating system security mechanisms. According to CWE-284, this weakness manifests as improper access control within the firmware environment, while ATT&CK framework references point to T1068 for privilege escalation techniques and T1059 for code execution capabilities.
The technical implementation of this vulnerability allows attackers to manipulate BIOS parameters and execute arbitrary code through specially crafted input sequences that bypass normal firmware security checks. The flaw enables unauthorized modification of critical system settings, potentially allowing threat actors to install persistent backdoors or disable security features such as secure boot mechanisms. This privilege escalation capability can be leveraged to gain root-level access to the system, effectively undermining all higher-level security controls. The vulnerability's impact extends beyond simple code execution to include information disclosure, where sensitive system data and configuration parameters can be extracted from the firmware memory. Additionally, the flaw can be exploited to cause denial of service conditions by corrupting critical BIOS components or triggering system instability through malformed input sequences.
The operational implications of CVE-2022-23926 are severe for organizations relying on affected HP hardware, as it provides attackers with a persistent foothold that survives operating system reboots and even complete system reinstalls. This characteristic makes the vulnerability particularly dangerous in enterprise environments where maintaining system integrity is paramount. The attack surface is broad due to the firmware-level nature of the flaw, meaning that exploitation can occur through multiple vectors including USB devices, network-based attacks, or physical access scenarios. Security professionals must understand that traditional endpoint protection solutions may not detect or prevent exploitation of this vulnerability since it operates below the operating system layer. The affected systems are particularly vulnerable during the boot process when BIOS security controls are most limited, creating a window of opportunity for attackers to establish persistent access.
Mitigation strategies for this vulnerability require immediate action from system administrators and security teams to implement firmware updates from HP, which address the underlying access control issues and strengthen input validation mechanisms. Organizations should also conduct comprehensive vulnerability assessments to identify all affected systems within their infrastructure and implement monitoring solutions capable of detecting BIOS-level anomalies. The remediation process involves careful firmware update procedures that must be executed with proper planning to avoid potential system bricking or service disruption. Security teams should consider implementing additional protective measures such as BIOS write protection features and hardware-based security controls to prevent unauthorized modifications. Regular security audits should include firmware integrity checks to ensure that systems remain protected against similar vulnerabilities that may emerge in the future, particularly focusing on the principles of least privilege and defense in depth as outlined in industry security frameworks.