Cisco NX-OS Software IPv6 Protocol Independent Multicast DoS (cisco-sa-nxos-pim-memleak-dos-tC8eP7uw)

high Nessus Plugin ID 139922

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, Cisco NX-OS Software is affected by a denial of service (DoS) vulnerability due to improper error handling when processing inbound PIM6 packets. An unauthenticated, remote attacker can exploit this, by sending multiple crafted PIM6 packets to an affected device, in order to cause the PIM6 application to leak system memory and stop processing legitimate PIM6 traffic, leading to a DoS condition on the affected device.

Please see the included Cisco BIDs and Cisco Security Advisory for more information.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug IDs CSCvr91853, CSCvr97684

Plugin Details

Severity: High

ID: 139922

File Name: cisco-sa-nxos-pim-memleak-dos-tC8eP7uw.nasl

Version: 1.9

Type: combined

Family: CISCO

Published: 8/28/2020

Updated: 3/8/2024

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-2020-3338

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:nx-os

Required KB Items: Host/Cisco/NX-OS/Version, Host/Cisco/NX-OS/Model, Host/Cisco/NX-OS/Device

Exploit Ease: No known exploits are available

Patch Publication Date: 8/26/2020

Vulnerability Publication Date: 8/26/2020

Reference Information

CVE: CVE-2020-3338

CWE: 404

CISCO-SA: cisco-sa-nxos-pim-memleak-dos-tC8eP7uw

IAVA: 2020-A-0394-S

CISCO-BUG-ID: CSCvr91853, CSCvr97684

Detections

Analytics