Detections
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Cisco IOS XR Software Border Gateway Protocol Denial of Service Vulnerability (cisco-sa-20200122-ios-xr-bgp-dos)

high Nessus Plugin ID 133408

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, Cisco IOS XR Software is affected by a denial of service vulnerability. A remote attacker could exploit this vulnerability by sending specially crafted BGP update messages, which could cause the BGP process to restart, resulting in a denial of service.

Please see the included Cisco BIDs and Cisco Security Advisory for more information

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvr69950

See Also

http://www.nessus.org/u?93dce29c

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvr69950

Plugin Details

Severity: High

ID: 133408

File Name: cisco-sa-20200122-ios-xr-bgp-dos.nasl

Version: 1.10

Type: combined

Family: CISCO

Published: 1/31/2020

Updated: 5/7/2021

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

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

CVSS Score Source: CVE-2019-15989

CVSS v3

Risk Factor: High

Base Score: 8.6

Temporal Score: 7.5

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:cisco:ios_xr

Required KB Items: Settings/ParanoidReport, Host/Cisco/IOS-XR/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 1/22/2020

Vulnerability Publication Date: 1/22/2020

Reference Information

CVE: CVE-2019-15989

BID: 109043

CISCO-SA: cisco-sa-20200122-ios-xr-bgp-dos

IAVA: 2020-A-0041-S

CISCO-BUG-ID: CSCvr69950