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Cisco NX-OS Software IPv6 Denial of Service Vulnerability (cisco-sa-20190828-nxos-ipv6-dos)

high Nessus Plugin ID 132772

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, Cisco NX-OS Software is affected by a denial of service (DoS) vulnerability in its IPV6 packet processing component due to insufficient validation. An unauthenticated, remote attacker can exploit this issue, by sending malformed IPV6 packets to an affected device, to force a restart of the system.

Please see the included Cisco BID and Cisco Security Advisory for more information.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvn46719

See Also

http://www.nessus.org/u?90ba471c

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvn46719

Plugin Details

Severity: High

ID: 132772

File Name: cisco-sa-20190828-nxos-ipv6-dos.nasl

Version: 1.4

Type: combined

Family: CISCO

Published: 1/10/2020

Updated: 1/13/2020

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2019-1964

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:cisco:nx-os

Required KB Items: Host/Cisco/NX-OS/Version, Host/Cisco/NX-OS/Model, Host/Cisco/NX-OS/Device

Exploit Ease: No known exploits are available

Patch Publication Date: 8/24/2019

Vulnerability Publication Date: 8/24/2019

Reference Information

CVE: CVE-2019-1964

CISCO-SA: cisco-sa-20190828-nxos-ipv6-dos

IAVA: 2019-A-0317

CISCO-BUG-ID: CSCvn46719