CVE-2018-0456: Cisco NX-OS Software Authenticated Simple Network Management Protocol Denial of Service Vulnerability

Published Oct 17, 2018

Updated

A vulnerability in the Simple Network Management Protocol (SNMP) input packet processor of Cisco NX-OS Software could allow an authenticated, remote attacker to cause the SNMP application of an affected device to restart unexpectedly. The vulnerability is due to improper validation of SNMP protocol data units (PDUs) in SNMP packets. An attacker could exploit this vulnerability by sending a crafted SNMP packet to an affected device. A successful exploit could allow the attacker to cause the SNMP application to restart multiple times, leading to a system-level restart and a denial of service (DoS) condition.

Affected Software

1 affected component

Cisco NX-OS=9.2\(0.43\)

Event History

Oct 17, 2018

CVE Published

via MITRE·08:00 PM

Data Sourced

via MITRE·08:00 PM

DescriptionSeverityWeakness

Frequently Asked Questions

What is the severity of CVE-2018-0456?

CVE-2018-0456 has a severity rating of high, indicating significant impact on affected systems.

How do I fix CVE-2018-0456?

To fix CVE-2018-0456, upgrade to the fixed version of Cisco NX-OS that addresses this vulnerability.

Who is affected by CVE-2018-0456?

CVE-2018-0456 affects Cisco NX-OS versions 9.2(0.43) and potentially other versions that utilize SNMP.

What type of attack does CVE-2018-0456 allow?

CVE-2018-0456 allows an authenticated, remote attacker to cause the SNMP application to restart unexpectedly.

What components are vulnerable in CVE-2018-0456?

The vulnerable component in CVE-2018-0456 is the SNMP input packet processor of Cisco NX-OS software.