CVE-2022-48239 in SC9863A
Summary
by MITRE • 05/09/2023
In camera driver, there is a possible out of bounds write due to a missing bounds check. This could lead to local denial of service with System execution privileges needed.
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Analysis
by VulDB Data Team • 05/31/2023
The vulnerability identified as CVE-2022-48239 resides within the camera driver component of a system, representing a critical out-of-bounds write flaw that stems from insufficient input validation. This type of vulnerability falls under the broader category of memory safety issues and aligns with CWE-787, which specifically addresses out-of-bounds write conditions where an application writes data past the end of a buffer. The absence of proper bounds checking in the camera driver's code structure creates an exploitable condition that allows malicious actors to manipulate memory locations beyond their intended boundaries.
The technical execution of this vulnerability requires an attacker to have system execution privileges, indicating that the attack vector likely involves a local user or process with elevated access rights. This prerequisite suggests that the vulnerability may be exploited through privilege escalation techniques or by leveraging existing system access to manipulate the camera driver functionality. The out-of-bounds write condition manifests when the driver processes camera data or configuration parameters without validating the size or range of input values, potentially leading to memory corruption that can cause system instability or complete system crashes.
From an operational perspective, the impact of this vulnerability extends beyond simple system disruption to potentially enable more sophisticated attack vectors. While the immediate effect is classified as local denial of service, the underlying memory corruption could provide attackers with opportunities to execute arbitrary code or escalate privileges further. The camera driver context is particularly concerning as it often operates with high system privileges and may handle sensitive data streams from camera hardware. This makes the vulnerability a potential entry point for attackers seeking to compromise system integrity and access to camera feeds or related system resources.
The exploitation of CVE-2022-48239 aligns with several tactics outlined in the MITRE ATT&CK framework, particularly those related to privilege escalation and defense evasion. Attackers may utilize this vulnerability as part of a broader attack chain to establish persistent access or to gain deeper system control. The requirement for system execution privileges indicates that this vulnerability is more likely to be encountered in environments where users already possess elevated access rights, potentially through legitimate administrative accounts or compromised credentials. Security professionals should consider this vulnerability when assessing system hardening measures and privilege management policies.
Mitigation strategies for CVE-2022-48239 should focus on implementing robust input validation mechanisms within the camera driver code to prevent unauthorized memory access. System administrators should prioritize applying vendor patches and updates as soon as they become available, while also implementing monitoring solutions to detect anomalous behavior in camera driver processes. Access control measures should be strengthened to limit the scope of system execution privileges, and regular security assessments should include verification of driver integrity and memory safety practices. Additionally, implementing runtime protections such as address space layout randomization and stack canaries can help reduce the exploitability of such memory corruption vulnerabilities.