Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerabilities (cisco-sa-iosxr-dvmrp-memexh-dSmpdvfz)

high Nessus Plugin ID 140111

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported configuration, Cisco IOS XR Software is affected by multiple vulnerabilities:

- Multiple denial of service (DoS) vulnerabilities exist in the Distance Vector Multicast Routing Protocol (DVMRP) feature due to insufficient queue management for Internet Group Management Protocol (IGMP) packets. An unauthenticated, remote attacker could exploit this issue by sending crafted IGMP traffic to an affected device, to cause memory exhaustion resulting in instability of other processes.

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

Solution

Upgrade to the relevant fixed version referenced in Cisco bug IDs CSCvr86414, CSCvv54838

Plugin Details

Severity: High

ID: 140111

File Name: cisco-sa-iosxr-dvmrp-memexh-dSmpdvfz.nasl

Version: 1.29

Type: combined

Family: CISCO

Published: 9/1/2020

Updated: 4/25/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.1

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.4

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

CVSS Score Source: CVE-2020-3566

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 7

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:F/RL:O/RC:C

CVSS Score Source: CVE-2020-3569

Vulnerability Information

CPE: cpe:/o:cisco:ios_xr

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/29/2020

Vulnerability Publication Date: 8/29/2020

CISA Known Exploited Vulnerability Due Dates: 5/3/2022

Reference Information

CVE: CVE-2020-3566, CVE-2020-3569

CWE: 400

CISCO-SA: cisco-sa-iosxr-dvmrp-memexh-dSmpdvfz

IAVA: 2020-A-0442-S

CISCO-BUG-ID: CSCvr86414, CSCvv54838

Detections

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