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

high Nessus Plugin ID 97943


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


According to its self-reported version, the Cisco IOS 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.


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

See Also

Plugin Details

Severity: High

ID: 97943

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

Version: 1.10

Type: combined

Family: CISCO

Published: 3/24/2017

Updated: 12/1/2020

Risk Information


Risk Factor: Medium

Score: 4.4


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 Score Source: CVE-2017-3849


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

Required KB Items: Host/Cisco/IOS/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-SA: cisco-sa-20170320-ani