Cisco IOS IKEv1 Packet Handling Remote Information Disclosure (cisco-sa-20160916-ikev1) (BENIGNCERTAIN) (uncredentialed check)

high Nessus Plugin ID 96802

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Synopsis

A remote device is affected by an information disclosure vulnerability.

Description

The IKE service running on the remote Cisco IOS device is affected by an information disclosure vulnerability, known as BENIGNCERTAIN, in the Internet Key Exchange version 1 (IKEv1) subsystem due to improper handling of IKEv1 security negotiation requests. An unauthenticated, remote attacker can exploit this issue, via a specially crafted IKEv1 packet, to disclose memory contents, resulting in the disclosure of confidential information including credentials and configuration settings.

BENIGNCERTAIN is one of multiple Equation Group vulnerabilities and exploits disclosed on 2016/08/14 by a group known as the Shadow Brokers.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvb29204.

Plugin Details

Severity: High

ID: 96802

File Name: cisco_ikev1_info_disclosure.nasl

Version: 1.5

Type: remote

Family: CISCO

Published: 1/26/2017

Updated: 6/12/2020

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

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

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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

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

Vulnerability Information

CPE: cpe:/o:cisco:ios

Required KB Items: udp/ikev1

Exploit Available: true

Exploit Ease: Exploits are available

Exploited by Nessus: true

Patch Publication Date: 9/16/2016

Vulnerability Publication Date: 8/14/2016

Reference Information

CVE: CVE-2016-6415

BID: 93003

CISCO-BUG-ID: CSCvb29204

CISCO-SA: cisco-sa-20160916-ikev1