Cisco Small Business RV Series Routers DoS RCE (cisco-sa-sb-mult-vuln-CbVp4SUR))

critical Nessus Plugin ID 163884

Synopsis

The remote device is missing a vendor-supplied security patch.

Description

According to its self-reported version, Cisco Small Business RV Series Router Firmware is affected by a vulnerability.
A vulnerability in the web-based management interface of Cisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers could allow an unauthenticated, remote attacker to execute arbitrary code or cause an affected device to restart unexpectedly, resulting in a denial of service (DoS) condition.

Please see the included Cisco BID 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 IDs CSCwc00210

See Also

http://www.nessus.org/u?93fea3b4

Plugin Details

Severity: Critical

ID: 163884

File Name: cisco-sa-sb-mult-vuln-CbVp4SUR_cve-2022-20842.nasl

Version: 1.2

Type: remote

Family: CISCO

Published: 8/5/2022

Updated: 8/8/2022

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS Score Source: CVE-2022-20842

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:cisco:small_business_rv_series_router_firmware

Required KB Items: Cisco/Small_Business_Router/Version, Cisco/Small_Business_Router/Model

Exploit Ease: No known exploits are available

Patch Publication Date: 8/3/2022

Vulnerability Publication Date: 8/3/2022

Reference Information

CVE: CVE-2022-20842

CISCO-BUG-ID: CSCwc00210

CISCO-SA: cisco-sa-sb-mult-vuln-CbVp4SUR

IAVA: 2022-A-0308