Cisco IOS Software Simple Network Management Protocol DoS (cisco-sa-snmp-dos-USxSyTk5)

high Nessus Plugin ID 137144

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, IOS is affected by a vulnerability in the Simple Network Management Protocol (SNMP) subsystem due to insufficient input validation when the software processes specific SNMP object identifiers. An authenticated, remote attacker can exploit this, by sending a crafted SNMP packet to an affected device, in order to cause a denial of service (DoS) condition.

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 CSCvk71355 or apply the workaround mentioned in the vendor advisory

Plugin Details

Severity: High

ID: 137144

File Name: cisco-sa-snmp-dos-USxSyTk5-ios.nasl

Version: 1.14

Type: combined

Family: CISCO

Published: 6/5/2020

Updated: 6/3/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 6.3

Temporal Score: 4.7

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

CVSS Score Source: CVE-2020-3235

CVSS v3

Risk Factor: High

Base Score: 7.7

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/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

Required KB Items: Host/Cisco/IOS/Version, Host/Cisco/IOS/Model

Exploit Ease: No known exploits are available

Patch Publication Date: 6/3/2020

Vulnerability Publication Date: 6/3/2020

Reference Information

CVE: CVE-2020-3235

CWE: 118

CISCO-SA: cisco-sa-snmp-dos-USxSyTk5

IAVA: 2020-A-0239-S

CISCO-BUG-ID: CSCvk71355

Detections

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