CVE-2020-9199 in B2368-22
Summary
by MITRE
B2368-22 V100R001C00;B2368-57 V100R001C00;B2368-66 V100R001C00 have a command injection vulnerability. An attacker with high privileges may exploit this vulnerability through some operations on the LAN. Due to insufficient input validation of some parameters, the attacker can exploit this vulnerability to inject commands to the target device.
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Analysis
by VulDB Data Team • 09/04/2020
The vulnerability identified as CVE-2020-9199 affects specific versions of B2368 network devices including models B2368-22 V100R001C00, B2368-57 V100R001C00, and B2368-66 V100R001C00. This represents a critical command injection flaw that allows authenticated attackers with high privileges to execute arbitrary commands on the affected devices. The vulnerability stems from inadequate input validation mechanisms within the device's network management interfaces, creating a pathway for malicious command execution that could compromise the entire network infrastructure.
The technical implementation of this vulnerability falls under CWE-77 which specifically addresses command injection flaws in software systems. The flaw occurs when the device fails to properly sanitize user inputs before processing them in system commands, allowing attackers to inject malicious commands through legitimate operational interfaces. This type of vulnerability is particularly dangerous because it requires only high privilege access rather than administrative credentials, making it accessible to insiders or attackers who have already gained some level of system access. The attack vector utilizes LAN-based operations, meaning that an attacker positioned within the local network can exploit this vulnerability without requiring external network access or complex reconnaissance.
The operational impact of this vulnerability is severe and multifaceted. Successful exploitation could enable attackers to execute arbitrary code on the affected devices, potentially leading to complete system compromise, data exfiltration, or disruption of network services. Network administrators could lose control over critical infrastructure, while the device might become a pivot point for further attacks within the network perimeter. The vulnerability also poses risks to network availability as attackers could potentially cause system crashes or disable critical services through command injection. Organizations relying on these devices for network management and security functions face significant exposure to lateral movement attacks and persistent threats that could remain undetected for extended periods.
Mitigation strategies for this vulnerability should include immediate firmware updates from the vendor to address the input validation deficiencies. Network segmentation and access control measures should be implemented to limit the attack surface and restrict high privilege access to only essential personnel. Regular security audits and input validation reviews should be conducted to identify similar vulnerabilities in other network components. The implementation of network monitoring solutions capable of detecting anomalous command execution patterns can provide early warning of potential exploitation attempts. Additionally, organizations should establish robust incident response procedures specifically addressing command injection vulnerabilities and consider implementing web application firewalls or similar protective measures to filter malicious inputs before they reach the vulnerable system components. This vulnerability aligns with ATT&CK technique T1059 which covers command and scripting interpreter, making it a significant concern for organizations implementing defensive security measures against such attack patterns.