Cisco IOS XR Software Protocol Independent Multicast Denial of Service Vulnerability

high Nessus Plugin ID 126100

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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 vulnerability in the Protocol Independent Multicast (PIM) feature of Cisco IOS XR Software. This could allow an unauthenticated, remote attacker to cause the PIM process to restart, resulting in a denial of service condition on an affected device.The vulnerability is due to the incorrect processing of crafted AutoRP packets. An attacker could exploit this vulnerability by sending crafted packets to port UDP 496 on a reachable IP address on the device. A successful exploit could allow the attacker to cause the PIM process to restart. (CVE-2019-1712)

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 CSCvg43676

Plugin Details

Severity: High

ID: 126100

File Name: cisco-sa-20190417-iosxr-pim-dos.nasl

Version: 1.8

Type: combined

Family: CISCO

Published: 6/21/2019

Updated: 4/8/2021

Configuration: Enable paranoid mode

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

CVSS Score Source: CVE-2019-1712

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/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: 4/17/2019

Vulnerability Publication Date: 4/17/2019

Reference Information

CVE: CVE-2019-1712

CWE: 20

CISCO-SA: cisco-sa-20190417-iosxr-pim-dos

CISCO-BUG-ID: CSCvg43676

Detections

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