Cisco NX-OS DHCPv4 Crafted Packet DoS (cisco-sa-20161005-dhcp1)

high Nessus Plugin ID 95256

Synopsis

The remote device is missing a vendor-supplied security patch.

Description

According to its version and configuration, the Cisco NX-OS software running on the remote device is affected by a denial of service vulnerability in the DHCPv4 relay agent and smart relay agent due to improper validation of DHCPv4 packets. An unauthenticated, remote attacker can exploit this, via a specially crafted DHCPv4 packet, to cause the affected device to reload.

Solution

Upgrade to the relevant fixed version referenced in Cisco security advisory cisco-sa-20161005-dhcp1.

See Also

http://www.nessus.org/u?2f80fa40

Plugin Details

Severity: High

ID: 95256

File Name: cisco-sa-20161005-dhcp1-nxos.nasl

Version: 1.12

Type: combined

Family: CISCO

Published: 11/22/2016

Updated: 1/16/2020

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS Score Source: CVE-2015-6392

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: 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/Device, Host/Cisco/NX-OS/Model

Exploit Ease: No known exploits are available

Patch Publication Date: 10/5/2016

Vulnerability Publication Date: 10/5/2016

Reference Information

CVE: CVE-2015-6392

BID: 93406