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AUSCERT External Security Bulletin Redistribution
ESB-2017.0445
Cisco Meeting Server API Denial of Service Vulnerability
16 February 2017
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Meeting Server
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2017-3837 CVE-2017-3830
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170215-cms
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170215-cms1
Comment: This bulletin contains two (2) Cisco Systems security advisories.
- --------------------------BEGIN INCLUDED TEXT--------------------
Cisco Security Advisory
Cisco Meeting Server API Denial of Service Vulnerability
Medium
Advisory ID:
cisco-sa-20170215-cms
First Published:
2017 February 15 16:00 GMT
Version 1.0:
Final
Workarounds:
Yes
Cisco Bug IDs:
CSCvc89678
CVE-2017-3830
CWE-20
CVSS Score:
Base 6.5, Temporal 6.5
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H/E:X/RL:X/RC:X
CVE-2017-3830
CWE-20
Download CVRF
Download PDF
Email
Summary
A vulnerability in an internal API of the Cisco Meeting Server (CMS) could
allow an unauthenticated, remote attacker to cause a denial of service
(DoS) condition on the affected appliance.
The vulnerability is due to invalid data being received on a specific port.
An attacker could exploit this vulnerability by sending crafted packets to
a specific port on the device. Successful exploitation could cause the CMS
to crash.
There are workarounds that address this vulnerability.
This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20170215-cms
Affected Products
Vulnerable Products
This vulnerability affects Cisco Meeting Server. 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.
Workarounds
There are workarounds that address this vulnerability. The firewall
functionality of the CMS can be leveraged to block external access to port
2829.
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.
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-20170215-cms
Revision History
Version Description Section Status Date
1.0 Initial public release. Final 2017-February-15
Show Less
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.
===================================================================
Cisco Security Advisory
Cisco Meeting Server HTTP Packet Processing Vulnerability
Medium
Advisory ID:
cisco-sa-20170215-cms1
First Published:
2017 February 15 16:00 GMT
Version 1.0:
Final
Workarounds:
No workarounds available
Cisco Bug IDs:
CSCvc89551
CVE-2017-3837
CWE-20
CVSS Score:
Base 5.4, Temporal 5.4
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L/E:X/RL:X/RC:X
CVE-2017-3837
CWE-20
Download CVRF
Download PDF
Email
Summary
A vulnerability in the Web Bridge interface of the Cisco Meeting Server
(CMS), formerly Acano Conferencing Server, could allow an authenticated,
remote attacker to retrieve memory contents, which could lead to the
disclosure of confidential information. In addition, the attacker could
potentially cause the application to crash unexpectedly, resulting in a
denial of service (DoS) condition. The attacker would need to be
authenticated and have a valid session with the Web Bridge.
The vulnerability is due to insufficient input validation of an HTTP
request. An attacker could exploit this vulnerability by sending a crafted
HTTP packet to a targeted application. A successful exploit could allow the
attacker to retrieve memory contents, which could lead to the disclosure of
confidential information or cause a DoS condition.
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-20170215-cms1
Affected Products
Vulnerable Products
This vulnerability affects Cisco Meeting Server software releases prior to
2.1.2. This product was previously known as Acano Conferencing Server.
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.
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
Cisco would like to thank Hugo Boutinon of Gotham Digital Science for
finding and 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-20170215-cms1
Revision History
Version Description Section Status Date
1.0 Initial public release. Final 2017-February-15
Show Less
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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