Vulnerability identifier: #VU15422

Vulnerability risk: Low

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-0456

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco NX-OS
Operating systems & Components / Operating system

Vendor: Cisco Systems, Inc

Description

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

The vulnerability exists in the Simple Network Management Protocol (SNMP) input packet processor of Cisco NX-OS Software due to improper validation of SNMP protocol data units (PDUs) in SNMP packets. A remote attacker can send SNMP packet and cause the SNMP application to restart multiple times, leading to a system-level restart and a denial of service (DoS) condition.

Mitigation
Update to version 7.0(3)I7(4).

Vulnerable software versions

Cisco NX-OS: 7.0.3 I7

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-nxos-snmp

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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