Detections
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Cisco IOS XR Software Border Gateway Protocol Resource Public Key Infrastructure DoS (cisco-sa-xrbgp-rpki-dos-gvmjqxbk)

medium Nessus Plugin ID 153219

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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 is affected by a denial of service (DoS) vulnerability in the implementation of the Resource Public Key Infrastructure (RPKI) feature due to incorrect handling of a specific RPKI to Router (RTR) Protocol packet. An unauthenticated, remote attacker can exploit this, by sending a crafted RTR packet, in order to cause a DoS condition.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvx04451

See Also

http://www.nessus.org/u?fd29f3b9

http://tools.cisco.com/security/center/viewErp.x?alertId=ERP-74637

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvx04451

Plugin Details

Severity: Medium

ID: 153219

File Name: cisco-sa-xrbgp-rpki-dos-gvmjqxbk-iosxr.nasl

Version: 1.6

Type: combined

Family: CISCO

Published: 9/13/2021

Updated: 11/19/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4

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

CVSS Score Source: CVE-2021-1440

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/8/2021

Vulnerability Publication Date: 9/8/2021

Reference Information

CVE: CVE-2021-1440

CWE: 617

CISCO-SA: cisco-sa-xrbgp-rpki-dos-gvmjqxbk

IAVA: 2021-A-0407-S

CISCO-BUG-ID: CSCvx04451