Detections
Analytics

Cisco IOS XR Software Border Gateway Protocol DoS (cisco-sa-20181003-iosxr-dos)

medium Nessus Plugin ID 133267

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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 (DoS) vulnerability in its implementation of the Border Gateway Protocol (BGP). This is due to incorrect processing of certain BGP update messages. An unauthenticated, remote attacker can exploit this, by sending BGP update messages that include a specific, malformed attribute to be processed by an affected system. A successful exploit allows an attacker to cause the BGP process to restart, resulting in a DoS condition.
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 CSCvj58445

See Also

http://www.nessus.org/u?4dc4cd5a

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvj58445

Plugin Details

Severity: Medium

ID: 133267

File Name: cisco-sa-20181003-iosxr-dos.nasl

Version: 1.6

Type: combined

Family: CISCO

Published: 1/28/2020

Updated: 4/8/2021

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

CVSS Score Source: CVE-2018-15428

CVSS v3

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

Vector: CVSS:3.0/AV:N/AC:H/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: Host/Cisco/IOS-XR/Version, Settings/ParanoidReport

Exploit Ease: No known exploits are available

Patch Publication Date: 10/3/2018

Vulnerability Publication Date: 10/5/2018

Reference Information

CVE: CVE-2018-15428

BID: 105944