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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2016.3070 Cisco CloudCenter Orchestrator Docker Engine Privilege Escalation Vulnerability 22 December 2016 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Cisco CloudCenter Orchestrator Publisher: Cisco Systems Operating System: Cisco Impact/Access: Root Compromise -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2016-9223 Original Bulletin: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161221-cco - --------------------------BEGIN INCLUDED TEXT-------------------- Cisco Security Advisory Cisco CloudCenter Orchestrator Docker Engine Privilege Escalation Vulnerability Critical Advisory ID: cisco-sa-20161221-cco First Published: 2016 December 21 16:00 GMT Last Updated: 2016 December 21 18:03 GMT Version 1.1: Final Workarounds: Yes CVSS Score: Base 9.3, Temporal 8.1 CVE-2016-9223 CWE-264 Summary A vulnerability in the Docker Engine configuration of Cisco CloudCenter Orchestrator (CCO; formerly CliQr) could allow an unauthenticated, remote attacker to install Docker containers with high privileges on the affected system. The vulnerability is due to a misconfiguration that causes the Docker Engine management port to be reachable outside of the CloudCenter Orchestrator system. An attacker could exploit this vulnerability by loading Docker containers on the affected system with arbitrary privileges. As a secondary impact this may allow the attacker to gain root privileges on the affected CloudCenter Orchestrator. Cisco has released software updates that address this vulnerability. Workarounds that mitigate this vulnerability are available. This advisory is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161221-cco Affected Products Vulnerable Products This vulnerability affect all releases of Cisco CloudCenter Orchestrator (CCO) deployments where the Docker Engine TCP port 2375 is open on the system and bound to local address 0.0.0.0 (any interface). Administrator can log in to the CCO and issue the netstat -ant | grep 2375 command to determine if the port is open and bound to 0.0.0.0 local address. The following example shows a CCO device with port 2375 in listening state and on local address 0.0.0.0 [root@cco ~]# netstat -ant | grep 2375 Proto Recv-Q Send-Q Local Address Foreign Address (state) tcp 0 0 0.0.0.0:2375 0.0.0.0:* LISTEN TCP port 2375 is open by default with local address 0.0.0.0. Products Confirmed Not Vulnerable No other Cisco products are currently known to be affected by this vulnerability. Indicators of Compromise Administrator may be able to detect a malicious Docker container by listing all the install containers on the system using the docker images command. The following example shows a list of containers which include a malicious container called badcontainer: [root@cco ~]#docker images REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE badcontainer latest aaaaaaaaaaaa 1 day ago 128.1 MB cliqr/worker latest 8b5213eb3fa2 2 weeks ago 643.9 MB [...] Because this vulnerability may allow access to the Cisco CCO software with root privileges, additional indicator of compromise may be present depending on the goal of the malicious actor. Workarounds Administrators can restrict the Docker Engine port to bind to localhost (127.0.0.1) following the procedure below: Issue the su command to obtain sudo privileges Enter the system directory using the following command cd /etc/systemd/system/ Edit the docker.socket file with your chosen editor and change the ListenStream value to the following: ListenStream=127.0.0.1:2375 Reload with the systemctl daemon-reload && systemctl restart docker command In addition, administrators can use the cloud provider security group or external firewall devices in private cloud deployment to restrict access to the CCO Docker Engine management port as per product documentation: http://docs.cliqr.com/display/CCD46/Phase+2%3A+Configure+Network+Rules 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 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 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 Cisco CloudCenter Orchestrator 4.6.2 patch release. Exploitation and Public Announcements The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements of the vulnerability that is described in this advisory. The Cisco PSIRT is aware that this vulnerability has been exploited publicly in a limited number of cases. Source This vulnerability was found during the resolution of support cases. URL https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161221-cco 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. - --------------------------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. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBWFtXtox+lLeg9Ub1AQgM+g/8DLGqo67IIimiemUghKr85kt4CIPijZ7H d97p1xOoAonytUVSi+idy14xeggyav3xXPH7fNY8ARewcryvOF+UeYz+SYaN2tHl RfL7tu+h/BOK+IW7kGNmSXQ4y3wADpnY5JWvuVvF+E/TMrl3M/WK0hKeIh9gBQWX WP/UwL1KMqYECglPgl7vWJPnIswbQk3Kbg7HXed/TFZyEfvztFjxV40H/ZBebb4X sE/mwY3wlULnQj3vZDhzQPB+y34+c8RNBcjTXxZzX/X7twwU0x+Sv5k8HE02CiDY w1fY7VdBnNi6SsEW0rdUQMFa3kmiZPNFZoJz2kUF36eRvk+tc7H1bFPZJQtWthDy 4qZiM3TjyKMsrzYjtslgr7L7aD+iKv6PDmMRx5fHqnT+DJt/qZr5abfLnVzJdBwK Q4QmdeAWs2CHIZIF+f0ogchgaqqEuQp39I1rGrdnMYlMNedRlsVyBTzdYY4VjDp+ CxvawLNhjcPrPPIPz7gwlSV6D2ySHx3AmeyL3HiLa+tYW/DsDhQkUC5K7ZdE9DsK n32OMSAyAQHRjq3A2Wu8GJHffH6L541bGu+a01138n0neIX4efcGalQiLIEvYjzs tuueNxCq13NJ3Vda37VZNmJNb3ftaQOvyK8dqaHzia46JrlSTW5YFyheLUOVRW2w CNbiozjSNdk= =DSsX -----END PGP SIGNATURE-----