Cisco IOS XE ANI Registrar DoS (cisco-sa-20170320-ani)

high Nessus Plugin ID 97944

Synopsis

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

Description

According to its self-reported version, the Cisco IOS XE software running on the remote device is affected by a denial of service vulnerability in the Autonomic Networking Infrastructure (ANI) registrar feature due to incomplete input validation of certain crafted packets. An unauthenticated, adjacent attacker can exploit this issue, via specially crafted autonomic network channel discovery packets, to cause the device to reload.

Note that this issue only affect devices with ANI enabled that are configured as an autonomic registrar and that have a whitelist configured.

Solution

Apply the relevant patch referenced in Cisco Security Advisory cisco-sa-20170320-ani.

See Also

http://www.nessus.org/u?206d164a

Plugin Details

Severity: High

ID: 97944

File Name: cisco-sa-20170320-ani-iosxe.nasl

Version: 1.8

Type: local

Family: CISCO

Published: 3/24/2017

Updated: 11/13/2019

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 4.5

Vector: AV:A/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: 7.4

Temporal Score: 6.4

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

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

Vulnerability Information

CPE: cpe:/o:cisco:ios_xe

Required KB Items: Host/Cisco/IOS-XE/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 3/20/2017

Vulnerability Publication Date: 3/20/2017

Reference Information

CVE: CVE-2017-3849

BID: 96972

CISCO-BUG-ID: CSCvc42717

CISCO-SA: cisco-sa-20170320-ani