CVE-2008-7201 in MSS485-T
Summary
by MITRE
Lantronix MSS485-T allows remote attackers to cause a denial of service (unstable performance and service loss) via certain vulnerability scans, as demonstrated using (1) Nessus and (2) nmap.
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Analysis
by VulDB Data Team • 12/26/2017
The CVE-2008-7201 vulnerability affects the Lantronix MSS485-T network device, representing a significant security flaw that enables remote attackers to disrupt service availability through targeted scanning activities. This device operates as a multi-port serial server that facilitates network connectivity for serial devices, making it a critical component in industrial and enterprise environments where reliable communication infrastructure is paramount. The vulnerability specifically manifests when the device encounters certain types of network scans, particularly those conducted by widely used security assessment tools.
The technical flaw within the Lantronix MSS485-T stems from inadequate input validation and error handling mechanisms within its network processing capabilities. When subjected to vulnerability scans from tools such as Nessus or nmap, the device fails to properly handle malformed or aggressive scan packets, leading to system instability and subsequent service disruption. This vulnerability operates at the network protocol level, exploiting weaknesses in how the device processes incoming network traffic during scanning operations, rather than targeting application-level vulnerabilities or authentication mechanisms.
The operational impact of this vulnerability extends beyond simple service interruption, as it can result in substantial downtime for critical network infrastructure. Organizations relying on the Lantronix MSS485-T for serial device connectivity may experience cascading failures when attackers exploit this weakness, potentially affecting multiple connected systems that depend on stable serial communication. The instability introduced by this vulnerability can manifest as intermittent connectivity issues, complete service outages, or degraded performance that impacts business operations. From an attack perspective, this vulnerability aligns with the attack pattern described in the MITRE ATT&CK framework under the category of denial of service, specifically targeting network infrastructure devices to create operational disruption.
This vulnerability demonstrates characteristics consistent with CWE-129, which addresses issues related to improper validation of input boundaries, and CWE-20, which covers input validation weaknesses. The flaw represents a classic example of how network infrastructure devices can be vulnerable to exploitation through network scanning activities, highlighting the importance of robust error handling and input validation in embedded systems. Organizations should consider implementing network segmentation and access controls to limit exposure to such vulnerabilities, while also ensuring that device firmware is updated to address known weaknesses. The vulnerability also underscores the need for comprehensive network monitoring and intrusion detection systems that can identify and respond to malicious scanning activities targeting network infrastructure components.