Cisco Security Advisory
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AV:N/AC:L/Au:N/C:C/I:N/A:N/E:F/RL:U/RC:C
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A vulnerability in the web-based administration interface of the Cisco Wireless Residential Gateway could allow an unauthenticated, remote attacker to access sensitive information on the affected device.
The vulnerability is caused by improper access restrictions implemented on the affected device. An attacker could exploit this vulnerability by sending a crafted HTTP request to the affected device.
Cisco has released software updates to its service provider customers that address the vulnerability described in this advisory. Prior to contacting Cisco TAC, customers are advised to contact their service providers to confirm the software deployed by the service provider includes the fix that addresses this vulnerability. Workarounds that mitigate this vulnerability are not available.
This advisory is available at the following link: http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160309-rgid
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Vulnerable Products
The following Cisco Wireless Residential Gateway products are vulnerable:
- Cisco DPC3941 Wireless Residential Gateway with Digital Voice
- Cisco DPC3939B Wireless Residential Voice Gateway
Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by this vulnerability.
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There are no workarounds that address this vulnerability.
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Cisco has released software updates to its service provider customers that address the vulnerability described in this advisory. Prior to contacting Cisco TAC, customers are advised to contact their service providers to confirm the software deployed by the service provider includes the fix that addresses this vulnerability.
By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license:
http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.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 consult the Cisco Security Advisories and Responses archive at http://www.cisco.com/go/psirt and review subsequent advisories to determine exposure and a complete upgrade solution.
In all cases, customers should ensure that the devices to upgrade 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 Technical Assistance Center (TAC):
http://www.cisco.com/en/US/support/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.
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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.
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This vulnerability was reported to Cisco by Kyle Lovett. Cisco would like to thank Kyle Lovett for reporting this vulnerability.
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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.
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Show LessVersion Description Section Status Date 1.0 Initial public release. — Final 2016-March-09
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