Detections
Analytics

Cisco IOS XE Software Border Gateway Protocol Resource Public Key Infrastructure DoS (cisco-sa-iosxe-rpki-dos-2EgCNeKE)

medium Nessus Plugin ID 168368

Language:

Synopsis

The remote device is affected by a denial of service vulnerability.

Description

According to its self-reported version, Cisco IOS-XE Software is affected by a denial of service (DoS) vulnerability that exists in its implementation of the Public Key Infrastructure (RPKI) feature due to the incorrect handling of a specific RPKI to Router (RTR) Protocol packet header. An unauthenticated remote attacker can exploit this issue via network to cause the Border Gateway Protocol (BGP) process to crash and restart constantly, potentially making BGP routing unstable.

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 CSCvz55292

See Also

http://www.nessus.org/u?3931bd3d

https://tools.cisco.com/security/center/viewErp.x?alertId=ERP-74561

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvz55292

Plugin Details

Severity: Medium

ID: 168368

File Name: cisco-sa-iosxe-rpki-dos-2EgCNeKE-iosxe.nasl

Version: 1.6

Type: combined

Family: CISCO

Published: 12/2/2022

Updated: 12/5/2022

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

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

CVSS Score Source: CVE-2022-20694

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_xe

Required KB Items: Host/Cisco/IOS-XE/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 4/13/2022

Vulnerability Publication Date: 4/13/2022

Reference Information

CVE: CVE-2022-20694