CVE-2022-48454 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-2022-48454 resides within the wifi service component of a system, representing a critical out-of-bounds write flaw that stems from insufficient input validation mechanisms. This type of vulnerability typically occurs when software fails to properly verify the boundaries of data structures before writing to memory locations, creating opportunities for malicious actors to exploit the system's memory management. The issue specifically manifests in the wifi service where a missing bounds check allows for potentially uncontrolled memory access patterns that could result in arbitrary memory corruption. According to CWE-129, this vulnerability aligns with improper input validation patterns that enable attackers to manipulate memory boundaries through crafted inputs. The flaw exists at the intersection of network service management and memory safety, where the wifi service processes incoming data without adequate boundary verification.
The technical implementation of this vulnerability enables local attackers to trigger a denial of service condition by exploiting the absence of proper bounds checking mechanisms. When the wifi service receives malformed or specially crafted input data, it attempts to write beyond the allocated memory boundaries of its data structures, potentially corrupting adjacent memory regions. This memory corruption can manifest as system instability, application crashes, or complete service unavailability, depending on the specific memory locations affected. The exploitability of this vulnerability requires no additional privileges beyond normal user access, making it particularly concerning as it can be leveraged by attackers with minimal system access. The attack vector typically involves sending specially constructed network packets or configuration data to the wifi service, which then processes this input without proper validation, leading to the out-of-bounds memory write operation.
The operational impact of CVE-2022-48454 extends beyond simple service disruption, potentially creating broader system instability that affects network connectivity and device functionality. Local denial of service conditions can prevent legitimate network access, disrupt communication services, and potentially create opportunities for more sophisticated attacks if the memory corruption affects critical system components. From an attacker perspective, this vulnerability provides a reliable method for causing service interruption without requiring elevated privileges, which aligns with attack techniques documented in the MITRE ATT&CK framework under the T1499 category for network denial of service. The vulnerability's presence in a wifi service component suggests potential impacts on mobile devices, IoT systems, and any platform where wireless connectivity is managed through centralized service processes, making it particularly relevant in environments where network availability is critical for system operations.
Mitigation strategies for CVE-2022-48454 should focus on implementing proper input validation and bounds checking mechanisms within the wifi service implementation. System administrators should prioritize applying vendor patches and updates that address the specific memory management flaws in the wifi service component. The remediation process should include code review practices that enforce defensive programming techniques such as array bounds checking, memory allocation verification, and input sanitization routines. Additionally, implementing runtime protections such as address space layout randomization and stack canaries can provide additional defense-in-depth measures. Organizations should also consider network segmentation and monitoring solutions that can detect anomalous wifi service behavior, as these systems may generate detectable patterns when exploited. The vulnerability's classification as a local denial of service suggests that endpoint protection measures and regular security assessments of network services should be implemented to prevent exploitation. Security teams should also establish incident response procedures specifically addressing wifi service disruptions and monitor for potential exploitation attempts targeting this specific memory corruption vulnerability.