CVE-2022-47451 in SC9863A
Summary
by MITRE • 02/12/2023
In wlan driver, there is a possible missing params check. This could lead to local denial of service in wlan services.
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Analysis
by VulDB Data Team • 03/10/2023
The vulnerability identified as CVE-2022-47451 resides within wireless local area network driver components, specifically affecting the wireless local area network services on affected systems. This issue represents a potential missing parameter validation flaw that could be exploited to disrupt wireless connectivity and service availability. The vulnerability manifests in the wireless driver subsystem where insufficient input validation occurs during parameter processing, creating a pathway for malicious actors to potentially disrupt wireless operations. According to the Common Weakness Enumeration framework, this vulnerability maps to CWE-252, which describes an "Missing Check for a Zero Value" or more broadly "Missing Parameter Check" conditions that can lead to unexpected behavior in software components.
The technical implementation of this vulnerability occurs when the wireless driver fails to properly validate incoming parameters during service operations, particularly in contexts where wireless network configurations or connection parameters are processed. This missing validation allows for malformed or unexpected parameter values to be processed without proper sanitization or verification, potentially leading to service instability or complete service termination. The flaw exists at the interface between user-space applications and kernel-space wireless driver components, where parameter validation should occur before processing occurs. Attackers could exploit this by crafting specific parameter inputs that bypass validation checks, potentially causing the wireless service to crash or become unresponsive.
The operational impact of CVE-2022-47451 extends beyond simple service disruption to potentially compromise wireless network availability and integrity. When exploited, this vulnerability could result in local denial of service conditions where wireless services become unavailable to legitimate users, effectively cutting off network connectivity for devices relying on wireless communications. The attack surface is particularly concerning in environments where wireless services are critical for operations, such as enterprise networks, industrial control systems, or mobile device management infrastructures. From an adversary perspective, this represents a low-effort attack vector that can be executed locally, making it particularly dangerous in scenarios where physical access or local privilege escalation is possible. The vulnerability aligns with ATT&CK technique T1499.003, which covers "Network Denial of Service" attacks that target wireless network services.
Mitigation strategies for CVE-2022-47451 should focus on implementing robust parameter validation mechanisms within the wireless driver components. System administrators should ensure that all wireless driver updates are applied promptly to address the identified validation gaps, particularly in environments where wireless services are critical. The implementation of input sanitization routines and comprehensive parameter validation checks can help prevent malformed parameters from reaching critical processing functions. Additionally, monitoring and logging mechanisms should be enhanced to detect unusual parameter patterns that might indicate exploitation attempts. Network segmentation and access controls can provide additional defense-in-depth measures to limit the potential impact of such local denial of service attacks. Organizations should also consider implementing automated patch management processes to ensure timely deployment of security updates and maintain visibility into wireless service health and potential exploitation indicators.