CVE-2022-23934 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-2022-23934 represents a critical security flaw within the system BIOS of specific HP PC products, fundamentally compromising the foundational security architecture of affected devices. This vulnerability stems from insufficient input validation and inadequate privilege separation mechanisms within the BIOS firmware implementation, creating multiple attack vectors that can be exploited by malicious actors to gain unauthorized access to system resources. The flaw exists in the firmware layer where system-level operations are executed, making it particularly dangerous as it operates below the operating system level and can bypass traditional security controls. The affected HP PC models typically include various consumer and enterprise laptops and desktop systems that utilize specific BIOS versions containing this vulnerability.
The technical implementation of this vulnerability manifests through improper handling of system initialization parameters and insufficient access controls within the BIOS environment. Attackers can exploit this weakness to manipulate system boot processes, modify firmware components, or inject malicious code during the system startup sequence. The vulnerability enables privilege escalation by allowing low-privilege attackers to execute code with system-level privileges, effectively breaking the security model that separates user applications from critical system functions. This flaw can be leveraged to execute arbitrary code directly within the BIOS context, which provides attackers with unprecedented control over the affected systems. The implementation of insufficient validation mechanisms means that external inputs or parameters passed to BIOS functions are not properly sanitized, creating opportunities for code injection attacks.
The operational impact of CVE-2022-23934 extends beyond simple unauthorized access, encompassing multiple serious consequences including persistent system compromise, data exfiltration, and complete system control. Once exploited, the vulnerability can enable attackers to establish persistent backdoors within the BIOS itself, making detection and remediation extremely difficult. The arbitrary code execution capability allows threat actors to install rootkits or other malicious software that operates below the operating system level, effectively rendering traditional antivirus and endpoint protection solutions ineffective. The information disclosure aspect of this vulnerability can expose sensitive system configuration data, cryptographic keys, or other confidential information stored within the BIOS memory. Additionally, the denial of service component can render affected systems completely inoperable, potentially requiring complete hardware replacement to restore functionality.
Mitigation strategies for this vulnerability require immediate action from system administrators and security teams to address the firmware-level weakness. The primary recommended approach involves applying the latest BIOS updates provided by HP, which contain patches specifically designed to address the input validation and privilege escalation issues within the firmware. Organizations should implement comprehensive firmware inventory management to identify all affected systems and establish regular update schedules to maintain protection against similar vulnerabilities. Security teams should also consider implementing BIOS integrity monitoring solutions that can detect unauthorized modifications to the firmware. The vulnerability aligns with CWE-122 which addresses buffer overflow conditions in firmware implementations, and maps to ATT&CK techniques including T1068 for escalation of privileges and T1542 for boot or logon initialization scripts. Organizations must also consider the broader implications for their security posture, as this vulnerability demonstrates the critical importance of securing firmware components and implementing proper supply chain security measures to prevent such low-level attacks from compromising entire enterprise environments.