Cisco IOS Misformed BGP Packet Causes Reload - Cisco Systems

high Nessus Plugin ID 48980

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

A Cisco device running IOS Border Gateway Protocol (BGP) is vulnerable to a Denial of Service (DoS) attack from a malformed BGP packet. Only devices with either the command bgp log-neighbor-changes configured or the command snmp-server enable traps bgp are vulnerable. The BGP protocol is not enabled by default, and must be configured in order to accept traffic from an explicitly defined peer. Unless the malicious traffic appears to be sourced from a configured, trusted peer, it would be difficult to inject a malformed packet.
Cisco has made free software available to address this problem.

Solution

Apply the relevant patch referenced in Cisco Security Advisory cisco-sa-20050126-bgp.

See Also

http://www.nessus.org/u?17e5d4c7

http://www.nessus.org/u?ff839049

Plugin Details

Severity: High

ID: 48980

File Name: cisco-sa-20050126-bgphttp.nasl

Version: 1.17

Type: local

Family: CISCO

Published: 9/1/2010

Updated: 11/15/2018

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.4

CVSS v2

Risk Factor: High

Base Score: 7.1

Temporal Score: 5.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A: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: 1/26/2005

Vulnerability Publication Date: 1/26/2005

Reference Information

CVE: CVE-2005-0196

BID: 12370

CERT: 689326

CISCO-SA: cisco-sa-20050126-bgp

CISCO-BUG-ID: CSCdx23494, CSCee67450