Vulnerability identifier: #VU15423

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-2018-0395

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 an adjacent unauthenticated attacker to cause DoS condition on the target system.

The vulnerability exists in the Link Layer Discovery Protocol (LLDP) implementation due to improper input validation of certain type, length, value (TLV) fields of the LLDP frame header. An adjacent attacker can send a specially crafted LLDP packet to an interface and cause the switch to reload unexpectedly.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Cisco NX-OS: 5.0 - 6.3

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-fxnx-os-dos

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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.