A vulnerability in the rule update functionality of Cisco FireSIGHT Management Center (MC) could allow an unauthenticated, remote attacker to manipulate the content of the rule update packages and execute arbitrary code on the system. The vulnerability is due to lack of certificate validation during the HTTPS connection toward support.sourcefire.com to download the rule update package. An attacker could exploit this vulnerability by performing a man-in-the-middle attack (such as DNS hijacking) to enable manipulation of the rule update package content. An exploit could allow the attacker to execute arbitrary code on the system with the privileges of the web server. Cisco has not released software updates that address this vulnerability. Workarounds that mitigate this vulnerability are available. This advisory is available at the following link: http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151116-fmc
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.
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.
| Version | Description | Section | Status | Date |
|---|---|---|---|---|
| 1.3 | Updated workarounds to clarify IP addresses for Sourcefire support and intelligence. | Workarounds | Final | 2015-November-30 |
| 1.2 | Updated to indicate that proof-of-concept code is available. | Exploitation and Public Announcements | Final | 2015-November-17 |
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