Platform
cisco
Component
cisco-iot-field-network-director
CVE-2019-1644 is a denial-of-service (DoS) vulnerability affecting Cisco IoT Field Network Director (IoT-FND). An unauthenticated, remote attacker can exploit this flaw to exhaust system resources, leading to a DoS condition. This occurs due to improper resource management of UDP ingress packets. The vulnerability impacts all versions of IoT-FND prior to a patch release.
The primary impact of CVE-2019-1644 is a denial of service. A successful attacker can flood the IoT-FND device with UDP packets, overwhelming its processing capabilities and network bandwidth. This can render the device unresponsive, disrupting critical IoT network management functions. The blast radius extends to any devices or services reliant on the IoT-FND for management and control. While not directly leading to data exfiltration, the DoS can indirectly impact data availability and operational continuity. The ease of exploitation, requiring only UDP packet transmission, makes it a significant concern.
CVE-2019-1644 was published on January 23, 2019. The vulnerability is considered easily exploitable due to its reliance on simple UDP flooding. No public exploits are widely known, but the simplicity of the attack vector suggests potential for automated exploitation. Severity is considered high due to the potential for widespread disruption. No KEV or EPSS score is available.
Exploit Status
EPSS
1.28% (80% percentile)
CVSS Vector
Cisco recommends applying the vendor-supplied patch as the primary mitigation. If patching is not immediately feasible, consider implementing rate limiting on the UDP port used by IoT-FND. This can be achieved through network firewalls or intrusion prevention systems (IPS) configured to drop or throttle excessive UDP traffic. Additionally, monitor network traffic for unusual UDP activity. Implement network segmentation to limit the potential impact of a DoS attack. After applying the patch, verify functionality by sending a test UDP packet and confirming normal operation.
Actualice Cisco IoT Field Network Director a una versión que no sea vulnerable. Consulte el advisory de Cisco para obtener más detalles e instrucciones específicas de actualización.
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It's a denial-of-service vulnerability in Cisco IoT Field Network Director that allows attackers to crash the system with UDP floods.
If you're using Cisco IoT Field Network Director and haven't applied the vendor patch, you are potentially vulnerable.
Apply the vendor-supplied patch from Cisco. If patching isn't possible immediately, implement UDP rate limiting.
While no widespread exploitation is publicly known, the simple attack vector makes it a potential target.
Refer to the Cisco Security Advisory and the NVD entry for CVE-2019-1644 for detailed information.
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