Cisco IOS NTP Packet Handling Remote DoS (cisco-sa-20160804-wedge)

high Nessus Plugin ID 93192

Synopsis

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

Description

According to its self-reported version and configuration, the Cisco IOS software running on the remote device is affected by a denial of service vulnerability due to insufficient checks on clearing invalid Network Time Protocol (NTP) packets from the interface queue. An unauthenticated, remote attacker can exploit this to cause an interface wedge, resulting in a denial of service condition.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCva35619.

See Also

http://www.nessus.org/u?57eccdac

Plugin Details

Severity: High

ID: 93192

File Name: cisco-sa-20160804-wedge-ios.nasl

Version: 1.11

Type: combined

Family: CISCO

Published: 8/29/2016

Updated: 12/1/2020

Risk Information

CVSS Score Source: CVE-2016-1478

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 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:ios

Required KB Items: Host/Cisco/IOS/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 8/4/2016

Vulnerability Publication Date: 8/4/2016

Reference Information

CVE: CVE-2016-1478

BID: 92317

CISCO-BUG-ID: CSCva35619

CISCO-SA: cisco-sa-20160804-wedge