ESB-2017.2937 - [Cisco] Cisco RF Gateway 1: Denial of service - Remote/unauthenticated 2017-11-16

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2937
     Cisco RF Gateway 1 TCP Connection Denial of Service Vulnerability
                             16 November 2017

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

Product:           Cisco RF Gateway 1
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-12318  

Original Bulletin: 
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171115-rf-gateway-1

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Cisco RF Gateway 1 TCP Connection Denial of Service Vulnerability

Medium
 Advisory ID:
 
cisco-sa-20171115-rf-gateway-1

First Published:
2017 November 15 16:00  GMT
 
Version 1.0: 
Final

Workarounds:
No workarounds available

Cisco Bug IDs:
CSCvf19887
CVE-2017-12318
CWE-399

CVSS Score:
Base 5.8
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L/E:X/RL:X/RC:X
CVE-2017-12318
CWE-399

Summary
  
A vulnerability in the TCP state machine of Cisco RF Gateway 1 devices
could allow an unauthenticated, remote attacker to prevent an affected
device from delivering switched digital video (SDV) or video on demand
(VoD) streams, resulting in a denial of service (DoS) condition.
The vulnerability is due to a processing error with TCP connections to
the affected device. An attacker could exploit this vulnerability by
establishing a large number of TCP connections to an affected device
and not actively closing those TCP connections. A successful exploit
could allow the attacker to prevent the affected device from
delivering SDV or VoD streams to set-top boxes.
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-20171115-rf-gateway-1

Affected Products
 
Vulnerable Products
  
This vulnerability affects Cisco RF Gateway 1 devices. For information
about affected software releases, consult the Cisco bug ID(s) at the
top of this advisory.

Products Confirmed Not Vulnerable
 
No other Cisco products are currently known to be affected by this
vulnerability.
Cisco has confirmed that this vulnerability does not affect Cisco RF
Gateway 10 devices.

Details
 
Exploitation of this vulnerability affects delivery only of SDV and
VoD streams to set-top boxes. It does not affect delivery of Internet
data to cable modems or delivery of linear video streams to set-top
boxes.

Workarounds

There are no workarounds that address this vulnerability.

Fixed Software
 
For information about fixed software releases, consult the Cisco bug
ID(s) at the top of this advisory.
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.

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
 
This vulnerability was found during the resolution of a support case.

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.

Subscribe to Cisco Security Notifications

Subscribe

URL

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171115-rf-gateway-1

Revision History
 
Version	Description		Section	Status	Date
1.0	Initial public release.		Final	2017-November-15

Legal Disclaimer
 
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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