-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Denial of Service Vulnerability in Cisco Video Surveillance IP Cameras Advisory ID: cisco-sa-20111026-camera Revision 1.0 For Public Release 2011 October 26 16:00 UTC (GMT) +--------------------------------------------------------------------- Summary ======= A denial of service (DoS) vulnerability exists in the Cisco Video Surveillance IP Cameras 2421, 2500 series and 2600 series of devices. An unauthenticated, remote attacker could exploit this vulnerability by sending crafted RTSP TCP packets to an affected device. Successful exploitation prevents cameras from sending video streams, subsequently causing a reboot. The camera reboot is done automatically and does not require action from an operator. There are no workarounds available to mitigate exploitation of this vulnerability that can be applied on the Cisco Video Surveillance IP Cameras. Mitigations that can be deployed on Cisco devices within the network are available. This advisory is posted at: http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20111026-camera Note: Effective October 18, 2011, Cisco moved the current list of Cisco Security Advisories and Responses published by Cisco PSIRT. The new location is: http://tools.cisco.com/security/center/publicationListing You can also navigate to this page from the Cisco Products and Services menu of the Cisco Security Intelligence Operations (SIO) Portal. Following this transition, new Cisco Security Advisories and Responses will be published to the new location. Although the URL has changed, the content of security documents and the vulnerability policy are not impacted. Cisco will continue to disclose security vulnerabilities in accordance with the published Security Vulnerability Policy. Affected Products ================= Vulnerable Products +------------------ Cisco Video Surveillance IP Cameras 2421, 2500 series, and 2600 series are affected by this vulnerability. For Cisco Video Surveillance 2421 and 2500 series IP Cameras, all 1.1.x software releases and releases prior 2.4.0 are affected by this vulnerability. For Cisco Video Surveillance 2600 IP Camera, all software releases before 4.2.0-13 are affected by this vulnerability. To check the version of system firmware that is running on the device and to determine device model, log in to the device with the web management interface, and navigate to the Status page. Products Confirmed Not Vulnerable +-------------------------------- The following Cisco Video Surveillance IP Cameras are confirmed not vulnerable: * Cisco Video Surveillance 2900 Series IP Cameras * Cisco Video Surveillance 4000 Series IP Cameras * Cisco Video Surveillance 5000 Series HD IP Dome Cameras No other Cisco products are currently known to be affected by this vulnerability. Details ======= The Cisco Video Surveillance IP Cameras are feature-rich digital cameras designed to provide superior performance in a wide variety of video surveillance applications. Cisco Video Surveillance IP Cameras RTSP Crafted Packet Vulnerability The Cisco Video Surveillance IP Cameras 2421, 2500 series, and 2600 series of devices are affected by a RSTP TCP crafted packets denial of service vulnerability that may allow an unauthenticated attacker to cause the device to reload by sending a series of crafted packets. This vulnerability can be exploited from both wired and wireless segments. This vulnerability is documented in the following Cisco bug IDs: * Cisco Video Surveillance 2421 IP Dome in Cisco bug ID: CSCtj96312 * Cisco Video Surveillance 2500 Series IP Cameras in Cisco bug ID: CSCtj39462 * Cisco Video Surveillance 2600 Series IP Cameras in Cisco bug ID: CSCtl80175 This vulnerability has been assigned Common Vulnerabilities and Exposures (CVE) ID CVE-2011-3318. Vulnerability Scoring Details ============================= Cisco has provided scores for the vulnerabilities in this advisory based on the Common Vulnerability Scoring System (CVSS). The CVSS scoring in this Security Advisory is done in accordance with CVSS version 2.0. CVSS is a standards-based scoring method that conveys vulnerability severity and helps determine urgency and priority of response. Cisco has provided a base and temporal score. Customers can then compute environmental scores to assist in determining the impact of the vulnerability in individual networks. Cisco has provided an FAQ to answer additional questions regarding CVSS at: http://www.cisco.com/web/about/security/intelligence/cvss-qandas.html Cisco has also provided a CVSS calculator to help compute the environmental impact for individual networks at: http://intellishield.cisco.com/security/alertmanager/cvss * CSCtj96312, CSCtj39462, CSCtl80175 - Cisco Video Surveillance IP Cameras RTSP Crafted Packet Vulnerability CVSS Base Score - 7.8 Access Vector - Network Access Complexity - Low Authentication - None Confidentiality Impact - None Integrity Impact - None Availability Impact - Complete CVSS Temporal Score - 6.4 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed Impact ====== Successful exploitation of the vulnerability may result in DoS condition. Subsequent exploitation may result in sustained DoS condition, as the cameras will continue to reload. Software Versions and Fixes =========================== When considering software upgrades, also consult: http://www.cisco.com/go/psirt As well as any subsequent advisories to determine exposure and a complete upgrade solution. In all cases, customers should exercise caution to be certain the devices to be upgraded contain sufficient memory and that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, contact the Cisco Technical Assistance Center (TAC) or your contracted maintenance provider for assistance. Software release 2.4.0 and later for Cisco Video Surveillance 2421 and 2500 series IP Cameras contain fix for this vulnerability. The software can be downloaded from Cisco Software Center at the following location: http://www.cisco.com/cisco/software/type.html?mdfid=282052803&flowid=7144 Software release 4.2.0-13 and later for Cisco Video Surveillance 2600 series IP Cameras contain the fix for this vulnerability. The software can be downloaded from Cisco Software Center at the following location: http://www.cisco.com/cisco/pub/software/portal/select.html?mdfid=283841388&catid=280249565 Workarounds =========== There are no workarounds available to mitigate exploitation of this vulnerability that can be applied on the Cisco Video Surveillance IP Cameras. Mitigations that can be deployed on Cisco devices within the network are available in the Cisco Applied Intelligence companion document for this advisory, which is available at the following location: http://tools.cisco.com/security/center/content/CiscoAppliedMitigationBulletin/cisco-amb-20111026-camera Obtaining Fixed Software ======================== Cisco has released free software updates that address these vulnerabilities. Prior to deploying software, customers should consult their maintenance provider or check the software for feature set compatibility and known issues specific to their environment. Customers may only install and expect support for the feature sets they have purchased. By installing, downloading, accessing or otherwise using such software upgrades, customers agree to be bound by the terms of Cisco's software license terms found at: http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html Or as otherwise set forth at Cisco.com Downloads at: http://www.cisco.com/public/sw-center/sw-usingswc.shtml Do not contact psirt@xxxxxxxxx or security-alert@xxxxxxxxx for software upgrades Customers with Service Contracts +------------------------------- Customers with contracts should obtain upgraded software through their regular update channels. For most customers, this means that upgrades should be obtained through the Software Center on Cisco's worldwide website at: http://www.cisco.com. Customers using Third Party Support Organizations +------------------------------------------------ Customers whose Cisco products are provided or maintained through prior or existing agreements with third-party support organizations, such as Cisco Partners, authorized resellers, or service providers should contact that support organization for guidance and assistance with the appropriate course of action in regards to this advisory. The effectiveness of any workaround or fix is dependent on specific customer situations, such as product mix, network topology, traffic behavior, and organizational mission. Due to the variety of affected products and releases, customers should consult with their service provider or support organization to ensure any applied workaround or fix is the most appropriate for use in the intended network before it is deployed. Customers without Service Contracts - ----------------------------------- Customers who purchase direct from Cisco but do not hold a Cisco service contract, and customers who purchase through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should acquire upgrades by contacting the Cisco Technical Assistance Center (TAC). TAC contacts are as follows. * +1 800 553 2447 (toll free from within North America) * +1 408 526 7209 (toll call from anywhere in the world) * e-mail: tac@xxxxxxxxx Customers should have their product serial number available and be prepared to give the URL of this notice as evidence of entitlement to a free upgrade. Free upgrades for non-contract customers must be requested through the TAC. Refer to: http://www.cisco.com/en/US/support/tsd_cisco_worldwide_contacts.html For additional TAC contact information, including localized telephone numbers, and instructions and e-mail addresses for use in various languages. Exploitation and Public Announcements ===================================== The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability described in this advisory. This vulnerability was discovered during internal testing. Status of this Notice: Final ============================ 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 stand-alone copy or Paraphrase of the text of this document that omits the distribution URL in the following section is an uncontrolled copy, and may lack important information or contain factual errors. Distribution ============ This advisory is posted on Cisco's worldwide website at: http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20111026-camera In addition to worldwide web posting, a text version of this notice is clear-signed with the Cisco PSIRT PGP key and is posted to the following e-mail and Usenet news recipients. * cust-security-announce@xxxxxxxxx * first-teams@xxxxxxxxx * bugtraq@xxxxxxxxxxxxxxxxx * vulnwatch@xxxxxxxxxxxxx * cisco@xxxxxxxxxxxxxxxxx * cisco-nsp@xxxxxxxxxxxxxxx * full-disclosure@xxxxxxxxxxxxxxxxx * comp.dcom.sys.cisco@xxxxxxxxxxxxxxxxxx Future updates of this advisory, if any, will be placed on Cisco's worldwide website, but may or may not be actively announced on mailing lists or newsgroups. Users concerned about this problem are encouraged to check the above URL for any updates. Revision History ================ +-------------------------------------------------------------------+ | Revision 1.0 | 2011-October-19 | Internal draft release | +-------------------------------------------------------------------+ Cisco Security Procedures ========================= Complete information on reporting security vulnerabilities in Cisco products, obtaining assistance with security incidents, and registering to receive security information from Cisco, is available on Cisco's worldwide website at: http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html This includes instructions for press inquiries regarding Cisco security notices. All Cisco security advisories are available at: http://www.cisco.com/go/psirt +-------------------------------------------------------------------- Copyright 2010-2011 Cisco Systems, Inc. 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