CVE-2018-0456

Cisco NX-OS Software Authenticated Simple Network Management Protocol Denial of Service Vulnerability

Description

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.

Category

7.7
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.86% Top 30%
Vendor Advisory cisco.com
Affected: Cisco Cisco NX-OS Software for Nexus 3000 Series 7.0(3)I7(3)
Published at:
Updated at:

References

Link Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-nxos-snmp vendor advisory
http://www.securitytracker.com/id/1041921 third party advisory vdb entry
http://www.securityfocus.com/bid/105668 third party advisory vdb entry

Frequently Asked Questions

What is the severity of CVE-2018-0456?
CVE-2018-0456 has been scored as a high severity vulnerability.
How to fix CVE-2018-0456?
To fix CVE-2018-0456, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-0456 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-0456 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-0456?
CVE-2018-0456 affects Cisco Cisco NX-OS Software for Nexus 3000 Series 7.0(3)I7(3).
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