CVE-2022-48455 in SC7731E
Summary
by MITRE • 11/01/2023
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 • 11/29/2023
The vulnerability identified as CVE-2022-48455 resides within the wifi service component of a system, representing a critical out-of-bounds write flaw that stems from inadequate input validation mechanisms. This type of vulnerability falls under the common weakness enumeration CWE-129 which specifically addresses insufficient bound checking, making it a direct descendant of poorly implemented input sanitization procedures. The flaw manifests when the wifi service processes incoming data without proper bounds verification, creating an exploitable condition where memory corruption can occur. Such vulnerabilities are particularly dangerous in network services as they can be triggered through legitimate communication channels, making them ideal candidates for exploitation by malicious actors seeking to disrupt system operations.
The technical implementation of this vulnerability demonstrates a classic buffer over-read scenario where the wifi service fails to validate the size or length of incoming data packets before attempting to write to memory locations. This missing bounds check creates a pathway for attackers to manipulate service behavior through crafted inputs that exceed expected data boundaries. The vulnerability is classified as local in nature since exploitation requires only local system access or network-based interaction that can trigger the service to process malformed data. However, the absence of privilege escalation requirements makes this particularly concerning as it can be leveraged by attackers with minimal access levels to cause significant operational disruption.
From an operational impact perspective, this vulnerability directly enables local denial of service conditions that can render the wifi service unavailable to legitimate users. The out-of-bounds write can corrupt memory structures, cause service crashes, or potentially lead to system instability that affects broader network functionality. Network administrators must consider the cascading effects of such service disruptions, as wifi service failures can impact enterprise connectivity, guest access, and overall network infrastructure reliability. The vulnerability's nature suggests that it may be difficult to detect through routine monitoring as the service might appear to function normally until the specific triggering conditions are met, making proactive identification challenging.
Mitigation strategies for CVE-2022-48455 should focus on implementing robust input validation and bounds checking mechanisms within the wifi service codebase. System administrators should prioritize applying vendor patches and updates as soon as they become available, while also implementing network segmentation to limit potential exploitation vectors. The remediation approach should align with defensive programming practices that emphasize the principle of least privilege and input sanitization, addressing the underlying CWE-129 weakness through comprehensive code review and testing procedures. Additionally, implementing intrusion detection systems that monitor for anomalous wifi service behavior can provide early warning capabilities, while regular security assessments should be conducted to identify similar vulnerabilities in other network service components that may share similar architectural patterns with the affected wifi service.