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AUSCERT External Security Bulletin Redistribution
ESB-2016.2533
Cisco Meeting Server Cross-Site Request Forgery Vulnerability and Cisco
Meeting Server Information Disclosure Vulnerability
28 October 2016
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Meeting Server
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Cross-site Request Forgery -- Remote with User Interaction
Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2016-6446 CVE-2016-6444
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161019-cms1
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161019-cms
Comment: This bulletin contains two (2) Cisco Systems security advisories.
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Cisco Security Advisory
Cisco Meeting Server Information Disclosure Vulnerability
Medium
Advisory ID: cisco-sa-20161019-cms1
First Published: 2016 October 19 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs:
CSCvb03308
CVSS Score:
Base 5.0, Temporal 4.1
Base 5.0, Temporal 4.1 AV:N/AC:L/Au:N/C:P/I:N/A:N/E:F/RL:OF/RC:C
CVE-2016-6446
CWE-200
Summary
A vulnerability in Web Bridge for Cisco Meeting Server could allow an
unauthenticated, remote attacker to retrieve memory from a connected server.
The vulnerability is due to missing bounds checks in the Web Bridge
functionality. An attacker could exploit this vulnerability by sending a
crafted packet to the affected server. An exploit could allow the attacker to
disclose a portion of memory from the server for every packet. The disclosed
portions of memory could contain sensitive information such as private keys or
passwords.
Cisco has released software updates that address this vulnerability.
Workarounds that address this vulnerability are not available.
This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161019-cms1
Affected Products
Vulnerable Products
Cisco Meeting Server is affected.
Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by this
vulnerability.
Details
Cisco Meeting Server incorporates video, audio, and content-sharing
capabilities into software that can be accessed via a conference room,
desktop, or mobile device. The Cisco Meeting Server product works across Cisco
video rooms and connects with Skype for Business and other hardware providers
to allow a seamless meeting architecture. This capability exists via
collaboration between Cisco and Acano, who joined Cisco in early 2016.
Software releases prior to 2.0 are available via Acano's website at
https://www.acano.com/support/downloads. Acano's release notes addressing this
vulnerability in the 1.8 and 1.9 releases can be found at
ftp://ftp.acano.com/software/server/1.8/1.8.17/Release%20Notes%201.8.17.pdf
and https://www.acano.com/publications/2016/09/Release-Notes-R1.9.5.pdf.
Workarounds
Workarounds that address this vulnerability are not available.
Fixed Software
Cisco Meeting Server version 2.0.3 software is available for download at
Cisco's Software Download Center:
https://software.cisco.com/download/navigator.html?mdfid=286309710
Acano Meeting Server version 1.9.5 software is available for download on
Acano's website: https://www.acano.com/support/downloads/
Acano Meeting Server version 1.8.17 software is available for download on
Acano's website: ftp://ftp.acano.com/software/server/1.8/1.8.17
Cisco provides information about fixed software in Cisco bugs, which are
accessible through the Cisco Bug Search Tool.
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.
URL
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161019-cms1
Revision History
Version Description Section Status Date
1.0 Initial public release. Final 2016-October-19
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 Security Advisory
Cisco Meeting Server Cross-Site Request Forgery Vulnerability
Medium
Advisory ID: cisco-sa-20161019-cms
First Published: 2016 October 19 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs:
CSCvb03308
CVSS Score:
Base 4.3, Temporal 3.6
Base 4.3, Temporal 3.6 AV:N/AC:M/Au:N/C:N/I:P/A:N/E:F/RL:OF/RC:C
CVE-2016-6444
CWE-352
Summary
A vulnerability in Cisco Meeting Server could allow an unauthenticated, remote
attacker to conduct a cross-site request forgery (CSRF) attack against a Web
Bridge user.
The vulnerability is due to insufficient CSRF protections. An attacker could
exploit this vulnerability by convincing the user of the affected system to
follow a malicious link or visit an attacker-controlled website. A successful
exploit could allow an attacker to submit arbitrary requests to the affected
device via the Web Bridge with the privileges of the user.
Cisco has released software updates that address this vulnerability.
Workarounds that address this vulnerability are not available.
This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161019-cms
Affected Products
Vulnerable Products
Cisco Meeting Server is vulnerable.
Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by this
vulnerability.
Details
Cisco Meeting Server incorporates video, audio, and content-sharing
capabilities into software that can be accessed via a conference room,
desktop, or mobile device. The Cisco Meeting Server product works across Cisco
video rooms and connects with Skype for Business and other hardware providers
to allow a seamless meeting architecture. This capability exists via
collaboration between Cisco and Acano, who joined Cisco in early 2016.
Software releases prior to 2.0 are available via Acano's website at
https://www.acano.com/support/downloads. Acano's release notes addressing this
vulnerability in the 1.9 release can be found at
https://www.acano.com/publications/2016/09/Release-Notes-R1.9.5.pdf.
Workarounds
For additional information about cross-site request forgery attacks and
potential mitigation methods, see the Cisco Applied Mitigation Bulletin
Understanding Cross-Site Request Forgery Threat Vector.
Fixed Software
Cisco Meeting Server version 2.0.4 software is available for download at
Cisco's Software Download Center:
https://software.cisco.com/download/navigator.html?mdfid=286309710
Acano Meeting Server version 1.9.5 software is available for download on
Acano's website: https://www.acano.com/support/downloads/
Cisco provides information about fixed software in Cisco bugs, which are
accessible through the Cisco Bug Search Tool.
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.
URL
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161019-cms
Revision History
Version Description Section Status Date
1.0 Initial public release. Final 2016-October-19
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 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.
- --------------------------END INCLUDED TEXT--------------------
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