Denial of service in Cisco IoT Field Network Director

1) Resource exhaustion

EUVDB-ID: #VU17197

Risk: Low

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-1644

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The vulnerability exists in in the UDP protocol implementation for Cisco IoT Field Network Director (IoT-FND) due to improper resource management for UDP ingress packets. A remote attacker can send a high rate of UDP packets to an affected system within a short period of time, exhaust available system resources and cause the service to crash.

Mitigation

The vulnerability has been addressed in the versions 4.1.2-19, 4.3.0-133.

Vulnerable software versions

Cisco IoT Field Network Director: 4.1.2 - 4.3.0

CPE2.3

• cpe:2.3:a:cisco_systems:cisco_iot_field_network_director:4.1.2:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_iot_field_network_director:4.2.0:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_iot_field_network_director:4.3.0:*:*:*:*:*:*:*

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190123-iot-fnd-dos

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.