ESB-2018.0377 - [Cisco] Cisco RV132W and RV134W: Root compromise - Remote/unauthenticated 2018-02-08

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.0377
        Cisco RV132W and RV134W Remote Code Execution and Denial of
                           Service Vulnerability
                              8 February 2018

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Cisco RV132W
                   Cisco RV134W
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Root Compromise   -- Remote/Unauthenticated
                   Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-0125  

Original Bulletin: 
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180207-rv13x

- --------------------------BEGIN INCLUDED TEXT--------------------

Cisco RV132W and RV134W Remote Code Execution and Denial of Service
Vulnerability

Critical

Advisory ID: cisco-sa-20180207-rv13x

First Published: 2018 February 7 16:00 GMT

Version 1.0: Final

Workarounds: No workarounds available

Cisco Bug IDs: CSCvg92737

CSCvh60170

CVE-2018-0125

CWE-20

CVSS Score: Base 9.8

CVSS: 3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X


Summary

A vulnerability in the web interface of the Cisco RV132W ADSL2+ Wireless-N VPN
and RV134W VDSL2 Wireless-AC VPN Routers could allow an unauthenticated, remote
attacker to execute arbitrary code and gain full control of an affected system,
including issuing commands with root privileges. The attacker could also cause
an affected system to reload, resulting in a denial of service (DoS) condition.

The vulnerability is due to an incomplete input validation on user-controlled
input in an HTTP request to the targeted device. An attacker could exploit this
vulnerability by sending a crafted HTTP request to an affected system. A
successful exploit could allow the attacker to execute arbitrary code as the
root user and gain full control of the affected system or cause it to reload,
resulting in a DoS condition.

Cisco has released firmware updates that address this vulnerability. There are
no workarounds that address this vulnerability.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180207-rv13x


Affected Products

Vulnerable Products

This vulnerability affects all firmware releases of the following Cisco
products:

    RV132W ADSL2+ Wireless-N VPN Router RV134W VDSL2 Wireless-AC VPN Router


Products Confirmed Not Vulnerable

No other Cisco products are currently known to be affected by this
vulnerability.


Workarounds

There are no workarounds that address this vulnerability.


Fixed Software

Cisco has released free software updates that address the vulnerability
described in this advisory. Customers may only install and expect support for
software versions and feature sets for which they have purchased a license. By
installing, downloading, accessing, or otherwise using such software upgrades,
customers agree to follow the terms of the Cisco software license:
https://www.cisco.com/c/en/us/products/end-user-license-agreement.html

Additionally, customers may only download software for which they have a valid
license, procured from Cisco directly, or through a Cisco authorized reseller or
partner. In most cases this will be a maintenance upgrade to software that was
previously purchased. Free security software updates do not entitle customers to
a new software license, additional software feature sets, or major revision
upgrades.

When considering software upgrades, customers are advised to regularly consult
the advisories for Cisco products, which are available from the Cisco Security
Advisories and Alerts 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.

Customers Without Service Contracts

Customers who purchase directly from Cisco but do not hold a Cisco service
contract and customers who make purchases through third-party vendors but are
unsuccessful in obtaining fixed software through their point of sale should
obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c
/en/us/support/web/tsd-cisco-worldwide-contacts.html

Customers should have the product serial number available and be prepared to
provide the URL of this advisory as evidence of entitlement to a free upgrade.


Fixed Releases

This vulnerability is fixed in firmware version 1.0.1.11 for the following Cisco
products:

    RV132W ADSL2+ Wireless-N VPN Router RV134W VDSL2 Wireless-AC VPN Router

The firmware updates can be downloaded from the Software Center on Cisco.com by
navigating to Products > Routers > Small Business Routers > Small Business RV
Series Routers.


Exploitation and Public Announcements

The Cisco Product Security Incident Response Team (PSIRT) is not aware of any
public announcements or malicious use of the vulnerability that is described in
this advisory.


Source

Cisco would like to thank Beyond Security's SecuriTeam Secure Disclosure program
and an independent security researcher for reporting this vulnerability.


Cisco Security Vulnerability Policy

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.


URL

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180207-rv13x


Revision History

+---------+-------------------------+---------+--------+------------------+
| Version |       Description       | Section | Status |       Date       |
+---------+-------------------------+---------+--------+------------------+
| 1.0     | Initial public release. | -       | Final  | 2018-February-07 |
+---------+-------------------------+---------+--------+------------------+


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GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS
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A standalone copy or paraphrase of the text of this document that omits the
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contain factual errors. The information in this document is intended for end
users of Cisco products.

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