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AUSCERT External Security Bulletin Redistribution
ESB-2023.0172
Cisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers Remote
Code Execution and Denial of Service Vulnerability
12 January 2023
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers
Publisher: Cisco Systems
Operating System: Cisco
Resolution: Patch/Upgrade
CVE Names: CVE-2023-20007
Original Bulletin:
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb-rv-rcedos-7HjP74jD
Comment: CVSS (Max): 4.7 CVE-2023-20007 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L)
CVSS Source: Cisco Systems
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
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Cisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers Remote Code
Execution and Denial of Service Vulnerability
Priority: Medium
Advisory ID: cisco-sa-sb-rv-rcedos-7HjP74jD
First Published: 2023 January 11 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCwc84443
CVE Names: CVE-2023-20007
Summary
o A vulnerability in the web-based management interface of Cisco Small
Business RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers
could allow an authenticated, remote attacker to execute arbitrary code or
cause the web-based management process on the device to restart
unexpectedly, resulting in a denial of service (DoS) condition. The
attacker must have valid administrator credentials.
This vulnerability is due to insufficient validation of user-supplied input
to the web-based management interface. An attacker could exploit this
vulnerability by sending crafted HTTP input to an affected device. A
successful exploit could allow the attacker to execute arbitrary code as
the root user on the underlying operating system or cause the web-based
management process to restart, resulting in a DoS condition.
Cisco has released software updates that address this vulnerability. There
are no workarounds that address this vulnerability.
This advisory is available at the following link:
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb-rv-rcedos-7HjP74jD
Affected Products
o Vulnerable Products
At the time of publication, this vulnerability affected the following Cisco
products:
RV340 Dual WAN Gigabit VPN Routers
RV340W Dual WAN Gigabit Wireless-AC VPN Routers
RV345 Dual WAN Gigabit VPN Routers
RV345P Dual WAN Gigabit POE VPN Routers
For information about which Cisco software releases were vulnerable at the
time of publication, see the Fixed Software section of this advisory. See
the Details section in the bug ID(s) at the top of this advisory for the
most complete and current information.
Determine the Device Configuration
The web-based management interface of these devices is available through a
local LAN connection, which cannot be disabled, or through the WAN
connection if the remote management feature is enabled. By default, the
remote management feature is disabled on these devices.
To determine whether the remote management feature is enabled on a device,
open the web-based management interface and choose Basic Settings > Remote
Management . If the Enable check box is checked, remote management is
enabled on the device.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Cisco has confirmed that this vulnerability does not affect the following
Cisco products:
RV160 VPN Routers
RV160W Wireless-AC VPN Routers
RV260 VPN Routers
RV260P VPN Routers with PoE
RV260W Wireless-AC VPN Routers
Workarounds
o There are no workarounds that address this vulnerability.
Fixed Software
o When considering software upgrades , customers are advised to regularly
consult the advisories for Cisco products, which are available from the
Cisco Security Advisories page , to determine exposure and a complete
upgrade solution.
In all cases, customers should ensure that the devices to be upgraded
contain sufficient memory and confirm that current hardware and software
configurations will continue to be supported properly by the new release.
If the information is not clear, customers are advised to contact the Cisco
Technical Assistance Center (TAC) or their contracted maintenance
providers.
Fixed Releases
At the time of publication, the release information in the following table
was accurate. See the Details section in the bug ID(s) at the top of this
advisory for the most complete and current information.
The left column lists Cisco software releases, and the right column
indicates whether a release was affected by the vulnerability that is
described in this advisory and which release included the fix for this
vulnerability.
Cisco RV340 and RV345 Series Routers Release First Fixed Release
Earlier than 1.0.03.29 1.0.03.29
The Cisco Product Security Incident Response Team (PSIRT) validates only
the affected and fixed release information that is documented in this
advisory.
Exploitation and Public Announcements
o The Cisco PSIRT is not aware of any public announcements or malicious use
of the vulnerability that is described in this advisory.
Source
o Cisco would like to thank lawhackzz from MoyunSec TopBreaker Labs for
reporting this vulnerability.
Cisco Security Vulnerability Policy
o To learn about Cisco security vulnerability disclosure policies and
publications, see the Security Vulnerability Policy . This document also
contains instructions for obtaining fixed software and receiving security
vulnerability information from Cisco.
Subscribe to Cisco Security Notifications
o Subscribe
Related to This Advisory
o
URL
o https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb-rv-rcedos-7HjP74jD
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2023-JAN-11 |
+----------+---------------------------+----------+--------+--------------+
Legal Disclaimer
o THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND
OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT
OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES
THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.
A standalone copy or paraphrase of the text of this document that omits the
distribution URL is an uncontrolled copy and may lack important information
or contain factual errors. The information in this document is intended for
end users of Cisco products.
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