CVE-2022-48463 in SC7731E
Summary
by MITRE • 12/04/2023
In wifi service, there is a possible out of bounds write due to a missing bounds check. This could lead to local denial of service with no additional execution privileges needed
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Analysis
by VulDB Data Team • 12/04/2023
The vulnerability identified as CVE-2022-48463 resides within the wifi service component of a system, representing a critical out-of-bounds write flaw that stems from insufficient input validation. This issue manifests when the wifi service processes incoming data without proper bounds checking mechanisms, creating an exploitable condition where malicious input can cause memory corruption. The vulnerability is classified under the Common Weakness Enumeration category CWE-129, which specifically addresses insufficient bounds checking, making it a well-documented and predictable weakness in software security design. The flaw exists at the boundary between legitimate data processing and memory allocation, where the system fails to validate that input data remains within acceptable parameter limits before writing to memory locations.
The technical exploitation of this vulnerability requires minimal privileges, as it can be triggered through local system access without requiring elevated execution rights. This characteristic significantly broadens the attack surface since any user with access to the wifi service interface or related components can potentially initiate the exploit. The out-of-bounds write condition occurs when the wifi service attempts to store data beyond the allocated memory buffer, which can result in overwriting adjacent memory locations. This memory corruption can manifest in various ways including application crashes, system instability, or in more severe cases, potential privilege escalation if the corrupted memory contains critical system structures. The vulnerability's impact is primarily focused on system availability rather than confidentiality or integrity, though memory corruption can sometimes lead to more complex security implications.
From an operational standpoint, this vulnerability creates a significant risk for local denial of service scenarios where the wifi service becomes unavailable or crashes entirely. The impact extends beyond simple service interruption as it can affect network connectivity for devices relying on the wifi infrastructure. Attackers can leverage this vulnerability to repeatedly crash the wifi service, creating persistent availability issues that degrade system performance and user experience. The lack of additional execution privileges required for exploitation makes this vulnerability particularly dangerous as it can be exploited by malicious users or processes with basic system access. Organizations may experience service disruptions, increased support tickets, and potential security incidents when this vulnerability is actively exploited in their environments.
Mitigation strategies for CVE-2022-48463 should prioritize immediate patching of affected systems, as this represents a critical security flaw that can be exploited without elevated privileges. System administrators should implement comprehensive monitoring for unusual wifi service behavior or frequent crashes that might indicate exploitation attempts. The vulnerability's nature suggests that input validation and bounds checking mechanisms should be strengthened throughout the wifi service implementation, with particular attention to buffer management and memory allocation routines. Additionally, implementing network segmentation and access controls can limit the potential impact of exploitation by restricting local access to the wifi service components. Organizations should also consider implementing intrusion detection systems that can identify anomalous patterns in wifi service usage that might indicate exploitation attempts. The remediation process should include thorough code review focusing on all memory management operations and input validation routines to prevent similar vulnerabilities from existing in other components of the system.