CVE-2024-6352 in SiSDK
Summary
by MITRE • 01/13/2025
A malformed packet can cause a buffer overflow in the APS layer of the Ember ZNet stack and lead to an assert
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Analysis
by VulDB Data Team • 08/28/2025
The vulnerability identified as CVE-2024-6352 represents a critical buffer overflow condition within the Application Support Protocol (APS) layer of the Ember ZNet stack implementation. This flaw manifests when the system processes malformed network packets that exceed the allocated buffer boundaries during APS layer operations. The Ember ZNet stack serves as a foundational component for Zigbee-based IoT device communications, making this vulnerability particularly concerning for wireless sensor networks and smart home ecosystems. The buffer overflow occurs specifically within the APS layer's packet processing mechanisms where incoming data is not properly validated against expected buffer limits before being copied or processed.
The technical exploitation of this vulnerability leverages malformed packet structures that trigger an assertion failure within the APS layer implementation. This assertion failure represents a defensive mechanism that typically occurs when the system detects an unexpected condition during operation, but in this case, the malformed packet data causes the assertion to fail in a manner that could potentially lead to system instability or unauthorized code execution. The vulnerability resides in the lack of proper input validation and boundary checking mechanisms within the APS layer packet handling code, creating an opportunity for attackers to craft malicious packets that exceed buffer capacity and cause the system to assert or crash.
From an operational impact perspective, this vulnerability affects embedded systems and IoT devices that rely on the Ember ZNet stack for wireless communication protocols. The assertion failure could result in denial of service conditions where legitimate devices within the network lose connectivity or the entire network infrastructure becomes unstable. Network administrators and device manufacturers must consider that this vulnerability could be exploited to disrupt critical communications in industrial control systems, smart grid infrastructure, or home automation networks. The impact extends beyond simple service interruption as the buffer overflow condition could potentially be leveraged to execute arbitrary code or escalate privileges within the affected system, though the exact exploitation vector requires further analysis of the specific implementation details.
Mitigation strategies for CVE-2024-6352 should prioritize immediate firmware updates from device manufacturers that address the buffer overflow condition in the APS layer implementation. Network segmentation and monitoring should be implemented to detect anomalous packet patterns that might indicate exploitation attempts. The vulnerability aligns with CWE-121, which describes stack-based buffer overflow conditions, and could potentially map to ATT&CK technique T1059 for command and control through malformed packet injection. Organizations should also implement network intrusion detection systems capable of identifying malformed packet traffic patterns and establish incident response procedures specifically addressing Zigbee network disruptions. Additionally, device vendors should conduct thorough code reviews of their APS layer implementations to identify similar buffer handling issues and ensure proper input validation mechanisms are in place to prevent similar vulnerabilities from emerging in future releases.