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AUSCERT External Security Bulletin Redistribution
ESB-2015.3121
Cisco Wireless Residential Unauthorized Command Vulnerability
15 December 2015
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco EPC3928 Wireless Residential Gateway
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Administrator Compromise -- Remote/Unauthenticated
Cross-site Scripting -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2015-6402 CVE-2015-6401
Original Bulletin:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151208-cwr
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151208-wrg
Comment: This bulletin contains two (2) Cisco Systems security advisories.
AusCERT recommends reviewing access to the web interface as well as
restricting external network access until Cisco releases workarounds
and/or patches.
For the cross-site scripting vulnerability, users should verify
unsolicited links as an interim workaround.
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Cisco Wireless Residential Unauthorized Command Vulnerability
Medium
Advisory ID:
cisco-sa-20151208-cwr
Published:
2015 December 8 00:00 GMT
Version 1.0:
Final
CVSS Score:
Base - 6.4
Workarounds:
No workarounds available
Cisco Bug IDs:
CSCux24941
CVE-2015-6401
CWE-287
Summary
A vulnerability with web interface access authentication of the Cisco EPC3928
Wireless Residential Gateway could allow an unauthenticated, remote attacker
to issue a subset of commands as the administrator without authenticating to
the device.
The vulnerability is due to lack of authentication required for certain
administrative functions through the web interface. An attacker could exploit
this vulnerability by sending a crafted HTTP request to the device. An exploit
could allow the attacker to execute a subset of administrator functions
without being authenticated.
Cisco has not released software updates that address this vulnerability. There
are no workarounds that address this vulnerability.
This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151208-cwr
Affected Products
Vulnerable Products
Cisco Model EPC3928 DOCSIS 3.0 8x4 Wireless Residential Gateway is vulnerable.
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
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 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 by Patryk Bogdan from the Secorda Security Team.
URL
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151208-cwr
Revision History
Version Description Section Status Date
1.0 Initial public release Final 2015-December-08
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.
- ------------------------------------------------------------------------------
Cisco Wireless Residential Gateway Stored Cross-Site Scripting Vulnerability
Medium
Advisory ID:
cisco-sa-20151208-wrg
Published:
2015 December 8 00:00 GMT
Version 1.0:
Final
CVSS Score:
Base - 4.3
Workarounds:
No workarounds available
Cisco Bug IDs:
CSCux24935
CVE-2015-6402
CWE-79
Summary
A vulnerability in the web-based management interface of the Cisco EPC3928
Wireless Residential Gateway could allow an unauthenticated, remote attacker
to conduct a stored cross-site scripting (XSS) attack against a user of the
web interface of the affected system.
The vulnerability is due to insufficient input validation of user-supplied
value and a lack of encoding of user-supplied data. An attacker could exploit
this vulnerability by convincing a user to click on a malicious link.
Additional information about XSS attacks and potential mitigations can be
found at the following links:
http://www.cisco.com/en/US/products/cmb/cisco-amb-20060922-understanding-xss.html
https://www.owasp.org/index.php/Cross-site_Scripting_(XSS)
Cisco has not released software updates that address this vulnerability. There
are no workarounds that address this vulnerability.
This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151208-wrg
Affected Products
Vulnerable Products
Cisco Model EPC3928 DOCSIS 3.0 8x4 Wireless Residential Gateway is vulnerable.
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
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 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 by Patryk Bogdan from the Secorda Security Team.
URL
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151208-wrg
Revision History
Version Description Section Status Date
1.0 Initial public release Final 2015-December-08
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.
- --------------------------END INCLUDED TEXT--------------------
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