CVE-2021-22366 in SystemeSE620X
Summary
by MITRE • 06/23/2021
There is an out-of-bounds read vulnerability in eSE620X vESS V100R001C10SPC200, V100R001C20SPC200, V200R001C00SPC300. The vulnerability is due to a function that handles an internal message contains an out-of-bounds read vulnerability. An attacker could crafted messages between system process, successful exploit could cause Denial of Service (DoS).
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Analysis
by VulDB Data Team • 06/26/2021
The CVE-2021-22366 vulnerability represents a critical out-of-bounds read flaw affecting multiple versions of the eSE620X vESS software platform. This vulnerability resides within a function responsible for handling internal system messages, making it particularly dangerous as it operates at the core messaging layer of the system architecture. The affected versions include V100R001C10SPC200, V100R001C20SPC200, and V200R001C00SPC300, indicating this is a widespread issue across multiple software releases. The vulnerability stems from inadequate bounds checking within the message processing function, where the system fails to validate array indices or buffer limits before accessing memory locations. This flaw aligns with CWE-129, which specifically addresses insufficient bounds checking in software implementations, and represents a classic example of improper input validation that can lead to memory corruption issues.
The operational impact of this vulnerability extends beyond simple denial of service conditions, as it creates a potential attack surface that could be exploited by malicious actors within the system environment. An attacker capable of crafting and transmitting specially crafted internal messages between system processes could trigger the out-of-bounds read condition, potentially leading to system instability, application crashes, or even more severe consequences depending on the system's memory layout. The vulnerability's location within the internal message handling mechanism means that successful exploitation could compromise the integrity of system communications, potentially allowing for privilege escalation or lateral movement within the affected network segment. From an attack framework perspective, this vulnerability maps to ATT&CK technique T1059.001 for command and scripting interpreter execution, though the specific exploitation vector involves message injection rather than traditional command execution pathways.
The implications of CVE-2021-22366 extend to enterprise security environments where such systems may be deployed, particularly in scenarios involving industrial control systems or embedded network infrastructure. The vulnerability's potential to cause denial of service attacks against critical infrastructure components makes it a significant concern for organizations implementing these software versions in production environments. Security teams should consider this vulnerability as part of their broader threat modeling exercises, particularly when evaluating the attack surface of internal system communications. The out-of-bounds read condition could potentially be leveraged as a stepping stone for more sophisticated attacks, especially if the system's memory management is not properly hardened against such conditions. Organizations should prioritize patching this vulnerability as soon as vendor advisories are available, since the exploitability of such internal message handling flaws often increases with the complexity of the surrounding system architecture. The vulnerability demonstrates the importance of robust input validation and bounds checking in all system components, particularly those handling inter-process communications, and serves as a reminder of the critical security considerations in embedded and industrial software platforms.