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Cisco IOS BGP Attribute Corruption Vulnerability - Cisco Systems

medium Nessus Plugin ID 48954

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

A Border Gateway Protocol (BGP) UPDATE contains Network Layer Reachability Information (NLRI) and attributes that describe the path to the destination. An unrecognized transitive attribute can cause failures in Cisco IOS routers, ranging from a crash upon receipt of the unrecognized transitive attribute, to a later failure upon attempt to clear the unrecognized transitive attribute. Specific but common configurations are affected, and described below. The failure was discovered because of a malfunction in the BGP implementation of another vendor. There is no workaround. Affected customers are urged to upgrade to fixed code. This vulnerability has been assigned Cisco bug ID CSCdt79947.

Solution

Apply the relevant patch referenced in Cisco Security Advisory cisco-sa-20010510-ios-bgp-attr.

See Also

http://www.nessus.org/u?87f00c5c

http://www.nessus.org/u?bb47db9e

Plugin Details

Severity: Medium

ID: 48954

File Name: cisco-sa-20010510-ios-bgp-attr.nasl

Version: 1.10

Type: local

Family: CISCO

Published: 9/1/2010

Updated: 11/15/2018

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

Vulnerability Information

CPE: cpe:/o:cisco:ios

Required KB Items: Host/Cisco/IOS/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 5/10/2001

Vulnerability Publication Date: 5/10/2001

Reference Information

CVE: CVE-2001-0650

BID: 2733