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Cisco IOS Next Hop Resolution Protocol Vulnerability

high Nessus Plugin ID 49008

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Synopsis

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

Description

The Cisco Next Hop Resolution Protocol (NHRP) feature in Cisco IOS contains a vulnerability that can result in a restart of the device or possible remote code execution.

NHRP is a primary component of the Dynamic Multipoint Virtual Private Network (DMVPN) feature.

NHRP can operate in three ways: at the link layer (Layer 2), over Generic Routing Encapsulation (GRE) and multipoint GRE (mGRE) tunnels and directly on IP (IP protocol number 54). This vulnerability affects all three methods of operation.

NHRP is not enabled by default for Cisco IOS.

Solution

Apply the relevant patch referenced in Cisco Security Advisory cisco-sa-20070808-nhrp.

See Also

http://www.nessus.org/u?9b51da4e

http://www.nessus.org/u?48a57100

Plugin Details

Severity: High

ID: 49008

File Name: cisco-sa-20070808-nhrphttp.nasl

Version: 1.23

Type: local

Family: CISCO

Published: 9/1/2010

Updated: 11/15/2018

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 7.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C

Vulnerability Information

CPE: cpe:/o:cisco:ios

Required KB Items: Host/Cisco/IOS/Version

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/8/2007

Vulnerability Publication Date: 8/8/2007

Reference Information

CVE: CVE-2007-4286

BID: 25238