Cisco FXOS Software Simple Network Management Protocol DoS (cisco-sa-20190515-nxos-snmp-dos)

high Nessus Plugin ID 132241

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, Cisco FXOS Software is affected by a denial of service (DoS) vulnerability in the Simple Network Management Protocol (SNMP) input packet processor due to improper error handling when processing inbound SNMP packets. An unauthenticated, remote attacker can exploit this, by sending multiple crafted SNMP packets to an affected device, to cause the SNMP application to leak system memory and, eventually, restart, resulting in a DoS condition.

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

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 CSCvn19468

Plugin Details

Severity: High

ID: 132241

File Name: cisco-sa-20190515-fxos-snmp-dos.nasl

Version: 1.8

Type: local

Family: CISCO

Published: 12/18/2019

Updated: 1/28/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

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-2019-1858

CVSS v3

Risk Factor: High

Base Score: 8.6

Temporal Score: 7.5

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

Required KB Items: installed_sw/FXOS

Exploit Ease: No known exploits are available

Patch Publication Date: 5/15/2019

Vulnerability Publication Date: 5/15/2019

Reference Information

CVE: CVE-2019-1858

CISCO-SA: cisco-sa-20190515-nxos-snmp-dos

IAVA: 2019-A-0173

CISCO-BUG-ID: CSCvn19468

Detections

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