ID

VAR-201102-0217

CVE

CVE-2011-0374

TITLE

Cisco TelePresence An arbitrary command execution vulnerability in endpoint devices

DESCRIPTION

The CGI implementation on Cisco TelePresence endpoint devices with software 1.2.x through 1.5.x allows remote authenticated users to execute arbitrary commands via a malformed request, related to "command injection vulnerabilities," aka Bug ID CSCtb31659. Cisco TelePresence is a telepresence conferencing solution developed by Cisco. To exploit these vulnerabilities, an attacker must send a malformed request to the affected device's TCP port 443. An attacker must perform three TCP handshakes and establish a legitimate session to exploit these vulnerabilities. Cisco TelePresence endpoint devices are prone to multiple vulnerabilities. An attacker can exploit these issues to execute arbitrary commands, disclose potentially sensitive information, or cause denial-of-service conditions. The solution provides components such as audio and video spaces, which can provide remote participants with a "face-to-face" virtual meeting room effect. The defect that is related to each component is covered in each associated advisory. To determine the current version of software that is running on the endpoint, access the device via SSH and issue the show version command. The output should resemble the following example. The version that is active on the system will be marked by an asterisk character (*). admin: show version primary Factory CTS 1.4.2(2194) *Slot 1 CTS 1.7.1(4750) P1 Slot 2 CTS 1.6.2(2835) P1 admin: In the preceding example, the system has versions 1.4.2, 1.6.2, and 1.7.1 loaded on the device and version 1.7.1 is currently active. A device is affected only by vulnerabilities that are present in the active software version. Products Confirmed Not Vulnerable +-------------------------------- No other Cisco products are currently known to be affected by these vulnerabilities. Details ======= The Cisco TelePresence solution allows for immersive, in-person communication and collaboration over the network with colleagues, prospects, and partners even when they are located in opposite hemispheres. Because the vulnerability is within a UDP based service, the attacker would not be required to perform a handshake prior to making the crafted request. However, due to the fact that this is an information disclosure issue the attacker would need to supply a valid return IP address to retrieve the information. An attacker with the ability to impersonate a Cisco TelePresence Manager system could remotely inject an invalid IP address into a configuration file that could cause a critical service on the device to crash. An endpoint affected by this issue will remain unusable until it has been manually restored to a known good state. Restoration of service may require an administrator to reload software on the affected device. The issue may require that the attacker perform an ARP spoofing or other form of impersonation attack. This vulnerability could allow an unauthenticated, adjacent attacker to trigger a buffer overflow condition. Because Cisco Discovery Protocol functions at the Data-Link (L2) layer, an attacker must submit an Ethernet frame directly to an affected device. This scenario may be possible when affected systems are part of a bridged network or connected to a nonpartitioned device such as a network hub. 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 Cisco 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 * CSCtb31640 - Unauthenticated CGI Access CVSS Base Score - 10 Access Vector - Network Access Complexity - Low Authentication - None Confidentiality Impact - Complete Integrity Impact - Complete Availability Impact - Complete CVSS Temporal Score - 8.3 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed * CSCtb31685 - CGI Command Injection CVSS Base Score - 9.0 Access Vector - Network Access Complexity - Low Authentication - Single Confidentiality Impact - Complete Integrity Impact - Complete Availability Impact - Complete CVSS Temporal Score - 7.4 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed * CSCtb31659 - CGI Command Injection CVSS Base Score - 9.0 Access Vector - Network Access Complexity - Low Authentication - Single Confidentiality Impact - Complete Integrity Impact - Complete Availability Impact - Complete CVSS Temporal Score - 7.4 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed * CSCth24671 - CGI Command Injection CVSS Base Score - 9.0 Access Vector - Network Access Complexity - Low Authentication - Single Confidentiality Impact - Complete Integrity Impact - Complete Availability Impact - Complete CVSS Temporal Score - 7.4 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed * CSCte43876 - TFTP Information Disclosure CVSS Base Score - 10 Access Vector - Network Access Complexity - Low Authentication - None Confidentiality Impact - Complete Integrity Impact - Complete Availability Impact - Complete CVSS Temporal Score - 8.3 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed * CSCth03605 - Malicious IP Address Injection 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 * CSCtb52587 - XML-RPC Command Injection CVSS Base Score - 8.3 Access Vector - Adjacent Network Access Complexity - Low Authentication - None Confidentiality Impact - Complete Integrity Impact - Complete Availability Impact - Complete CVSS Temporal Score - 6.9 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed * CSCtd75754 - Cisco Discovery Protocol Remote Code Execution CVSS Base Score - 7.9 Access Vector - Adjacent Network Access Complexity - Medium Authentication - None Confidentiality Impact - Complete Integrity Impact - Complete Availability Impact - Complete CVSS Temporal Score - 6.5 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed Impact ====== Successful exploitation of the Unauthenticated CGI Access (CSCtb31640) vulnerability could allow an unauthenticated, remote attacker to take complete control of an affected device or system. Successful exploitation of the TFTP Information Disclosure (CSCte43876) vulnerability could allow an unauthenticated, remote attacker to take complete control of an affected system. Successful exploitation of the Malicious IP Address Injection (CSCth03605) vulnerability could allow an unauthenticated, remote attacker to cause a persistent denial of service condition on an affected system. Successful exploitation of the XML-RPC Command Injection (CSCtb52587) vulnerability could allow an unauthenticated, adjacent attacker to take complete control of an affected system. Successful exploitation of the Cisco Discovery Protocol Remote Code Execution (CSCtd75754) vulnerability could allow an unauthenticated, adjacent attacker to take complete control of an affected system. Software Versions and Fixes =========================== When considering software upgrades, also consult http://www.cisco.com/go/psirt and 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. Each row of the following Cisco TelePresence System Software table defines a specific defect, the first fixed release, and the recommended release to resolve all the security issues identified in this advisory as well as other non-security-related issues. Cisco recommends upgrading to a release equal to or later than the release in the Recommended Release column of the table. Workarounds =========== There are no device- or system-based workarounds for the identified vulnerabilities. Additional mitigations that can be deployed on Cisco devices in the network are available in the Cisco Applied Intelligence companion document for this advisory: http://www.cisco.com/warp/public/707/cisco-amb-20110223-telepresence.shtml 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@cisco.com or security-alert@cisco.com 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@cisco.com 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 vulnerabilities that are described in this advisory. All vulnerabilities identified in this Cisco Security Advisory were discovered internally by Cisco. 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://www.cisco.com/warp/public/707/cisco-sa-20110223-telepresence-cts.shtml 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@cisco.com * first-bulletins@lists.first.org * bugtraq@securityfocus.com * vulnwatch@vulnwatch.org * cisco@spot.colorado.edu * cisco-nsp@puck.nether.net * full-disclosure@lists.grok.org.uk * comp.dcom.sys.cisco@newsgate.cisco.com 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 | | Intial | | 1.0 | 2011-February-23 | public | | | | 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. All rights reserved. +-------------------------------------------------------------------- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iF4EAREIAAYFAk1lJpgACgkQQXnnBKKRMNAkUAD6ApT3xpU4A4OutzIXLIDjQ4Gn OIBwpovUdzC/bWS4QjoA/ikyL3RwYvau4o3CkCFyciwaxbk/o5Pmtg0tulTQWWjv =HXfS -----END PGP SIGNATURE-----

IOT TAXONOMY

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

remote

TYPE

operating system commend injection

CONFIGURATIONS

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Cisco

SOURCES

LAST UPDATE DATE

2024-11-23T21:47:02.024000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE