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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2016.2582 Cisco Meeting Server Session Description Protocol Media Lines Buffer Overflow Vulnerability 3 November 2016 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Cisco Meeting Server Publisher: Cisco Systems Operating System: Cisco Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2016-6448 Original Bulletin: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161102-cms1 - --------------------------BEGIN INCLUDED TEXT-------------------- Cisco Security Advisory Cisco Meeting Server Session Description Protocol Media Lines Buffer Overflow Vulnerability High Advisory ID: cisco-sa-20161102-cms1 First Published: 2016 November 2 16:00 GMT Version 1.0: Final Workarounds: No workarounds available Cisco Bug IDs: CSCva76004 CVSS Score: Base 7.5, Temporal 6.8 AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:U/RC:C CVE-2016-6448 CWE-119 Summary A vulnerability in the Session Description Protocol (SDP) parser of Cisco Meeting Server could allow an unauthenticated, remote attacker to execute arbitrary code on an affected system. The vulnerability exists because the affected software performs incomplete input validation of the size of media lines in session descriptions. An attacker could exploit this vulnerability by sending crafted packets to the SDP parser on an affected system. A successful exploit could allow the attacker to cause a buffer overflow condition on an affected system, which could allow the attacker to execute arbitrary code on the system. Cisco has 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-20161102-cms1 Affected Products Cisco Meeting Server incorporates video, audio, and content-sharing capabilities into software that can be accessed via a conference room, desktop, or mobile device. Cisco Meeting Server 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. Vulnerable Products This vulnerability affects the following products: Cisco Meeting Server releases prior to Release 2.0.3 Acano Server releases 1.9.x prior to Release 1.9.5 Acano Server releases 1.8.x prior to Release 1.8.17 For more information about this vulnerability in Acano Server releases 1.8.x and 1.9.x, see the following resources on the Acano website: Acano Server & VM Release 1.8.17 Release Notes and Acano Server & VM Release 1.9.5 Release Notes To determine whether a system is affected by this vulnerability, administrators can check the system configuration by using the Cisco Meeting Server command-line interface (CLI). To determine which release of Cisco Meeting Server is running on a system, administrators can issue the version command in the CLI and refer to the output of the command. The following example shows the output of the version command for a system that is running Cisco Meeting Server Release 2.0.6: system> version 2_0_6 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 Cisco has released free software updates that address the vulnerability described in this advisory. Customers may only install and expect support for software versions and feature sets for which they have purchased a license. 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 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. 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. Fixed Releases This vulnerability has been fixed in the following releases: Cisco Meeting Server Release 2.0.3 Acano Server Release 1.9.5 Acano Server Release 1.8.17 Customers are advised to download the latest Cisco Meeting Server release from the Software Center on Cisco.com by navigating to Products > Conferencing > Video Conferencing > Multiparty Conferencing > Meeting Server > Meeting Server 1000 > TelePresence Software. Customers can download Acano Server Release 1.9.5 and Acano Server Release 1.8.17 from the FTP library on the Acano website. 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-20161102-cms1 Revision History Version Description Section Status Date 1.0 Initial public release. Final 2016-November-02 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-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. 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If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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