CVE-2023-20836 in MT6762
Summary
by MITRE • 09/04/2023
In camsys, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07505629; Issue ID: ALPS07505629.
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Analysis
by VulDB Data Team • 09/29/2023
The vulnerability identified as CVE-2023-20836 resides within the camsys component of a system, representing a critical out-of-bounds read flaw that stems from inadequate input validation mechanisms. This particular issue manifests when the system fails to properly verify array or buffer boundaries during data processing operations, creating a scenario where memory access occurs beyond allocated limits. The vulnerability is classified under CWE-129 as an insufficient bounds checking condition, which directly impacts the system's memory safety mechanisms and creates potential attack vectors for malicious actors.
The technical exploitation of this vulnerability requires system execution privileges, indicating that an attacker must already possess elevated access levels within the target environment to leverage this flaw effectively. This requirement suggests that the vulnerability may be part of a broader attack chain where initial access has been established through other means, with this particular flaw serving as a mechanism for information extraction or further privilege escalation. The absence of user interaction requirements for exploitation means that the vulnerability can be triggered automatically without any human intervention, making it particularly concerning for automated attack scenarios.
The operational impact of CVE-2023-20836 extends beyond simple information disclosure, as it represents a potential pathway for more sophisticated attacks within the system's architecture. When an out-of-bounds read occurs, it can expose sensitive data structures, memory contents, or system information that could be leveraged by attackers to understand system behavior, identify additional vulnerabilities, or craft more targeted attacks. The local nature of the information disclosure suggests that an attacker with system-level privileges could potentially access confidential information that might include system configurations, user data, or other sensitive operational details.
The patch identified as ALPS07505629 specifically addresses this vulnerability through enhanced bounds checking mechanisms within the camsys component. This patch implementation aligns with standard security practices for mitigating memory safety issues and represents a defensive measure that restores proper input validation procedures. The issue ID ALPS07505629 indicates that this vulnerability was tracked within a specific vendor's vulnerability management system, suggesting proper classification and prioritization of the security concern. From an ATT&CK framework perspective, this vulnerability could be categorized under techniques involving privilege escalation or information gathering, potentially supporting later stages of an attack where adversaries seek to extract valuable data or establish persistence within the compromised system.
Organizations should prioritize the deployment of this patch across affected systems to prevent potential exploitation of this vulnerability. The patch implementation should be accompanied by thorough testing to ensure compatibility with existing system configurations and functionality. Security teams should monitor for any signs of exploitation attempts or unusual system behavior that might indicate successful exploitation of this vulnerability. Additionally, implementing additional monitoring controls around system execution privileges and access patterns can help detect potential abuse of this vulnerability before it leads to more serious security incidents. The vulnerability highlights the importance of maintaining robust input validation mechanisms and proper bounds checking in system components that handle user or system data processing operations.