Advisory ID: cisco-sa-20120711-ctrs
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120711-ctrs
Revision 1.1
Last Updated 2012 July 31 19:04 UTC (GMT)
For Public Release 2012 July 11 16:00 UTC (GMT)
Contents
Summary
Affected Products
Details
Vulnerability Scoring Details
Impact
Software Versions and Fixes
Workarounds
Obtaining Fixed Software
Exploitation and Public Announcements
Status of This Notice: Final
Distribution
Revision History
Cisco Security Procedures
Summary
Cisco TelePresence Recording Server contains the following vulnerabilities:
- Cisco TelePresence Malformed IP Packets Denial of Service Vulnerability
- Cisco TelePresence Web Interface Command Injection
- Cisco TelePresence Cisco Discovery Protocol Remote Code Execution Vulnerability
Exploitation of the Cisco TelePresence Web Interface Command Injection may allow an authenticated, remote attacker to execute arbitrary commands on the underlying operating system with elevated privileges.
Exploitation of the Cisco TelePresence Cisco Discovery Protocol Remote Code Execution Vulnerability may allow allow an unauthenticated, adjacent attacker to execute arbitrary code with elevated privileges.
Cisco has released updated software that resolves the command and code execution vulnerabilities. There are currently no plans to resolve the malformed IP packets denial of service vulnerability, as this product is no longer being actively supported.
There are no workarounds that mitigate these vulnerabilities.
Customers should contact their Cisco Sales Representative to determine the Business Unit responsible for their Cisco TelePresence Recording Server.
This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120711-ctrs
Affected Products
Vulnerable Products
Cisco TelePresence Malformed IP Packets Denial of Service Vulnerability
| Product | Affected |
|---|---|
| Cisco TelePresence Manager |
Yes |
| Cisco TelePresence Recording Server |
Yes |
| Cisco TelePresence Multipoint Switch |
Yes |
| Cisco TelePresence Immersive Endpoint System |
No |
Cisco TelePresence Web Interface Command Injection
| Product | Affected |
|---|---|
| Cisco TelePresence Manager |
No |
| Cisco TelePresence Recording Server | Yes |
| Cisco TelePresence Multipoint Switch |
No |
| Cisco TelePresence Immersive Endpoint System |
No |
Cisco TelePresence Cisco Discovery Protocol Remote Code Execution Vulnerability
| Product | Affected |
|---|---|
| Cisco TelePresence Manager |
Yes |
| Cisco TelePresence Recording Server |
Yes |
| Cisco TelePresence Multipoint Switch | Yes |
| Cisco TelePresence Immersive Endpoint System |
Yes |
Detailed Information about Vulnerable Products
This security advisory describes the vulnerabilities for the Cisco TelePresence Recording Server. For additional information regarding how the vulnerabilities affect other vulnerable products, refer to the specific product security advisories at the links in the table below:| Product | Security Advisory Publication Link |
|---|---|
| Cisco TelePresence Multipoint Switch |
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120711-ctms |
| Cisco TelePresence Manager |
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120711-ctsman |
| Cisco TelePresence Immersive Endpoint System |
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120711-cts |
How to Determine the Software Version
Cisco TelePresence Recording Server devices that are running an affected version of software are affected.
To determine the current version of software that is running on the Cisco TelePresence Recording Server, establish an SSH connection to the device and issue the show version active and the show version inactive commands. The output should resemble the following example:
admin: show version active Active Master Version: 1.7.0.0-471 Active Version Installed Software Options: No Installed Software Options Found. admin: show version inactive Inactive Master Version: 1.6.0.0-342 Inactive Version Installed Software Options: No Installed Software Options Found.
In the preceding example, the system has versions 1.6.0 and 1.7.0 loaded on the device, and version 1.7.0 is currently active. A device is affected only by vulnerabilities that are in the active software version.
Products Confirmed Not Vulnerable
Details
This section gives additional information for each of the vulnerabilities affecting Cisco TelePresence Recording Server.
Cisco TelePresence Malformed IP Packets Denial of Service Vulnerability
A vulnerability exists in the network stack of the operating system that could allow an unauthenticated, remote attacker to create a denial of service condition, preventing the device from responding to new connection requests and potentially leading to the crash of some of the services and processes. The vulnerability is due to improper handling of malformed IP packets and TCP connection requests or terminations sent at a high rate. An attacker could exploit this vulnerability by sending a specially crafted sequence of malformed IP packets or TCP segments at a high rate.
This vulnerability is documented in Cisco bug ID CSCti21830 (registered customers only) and has been assigned Common Vulnerabilities and Exposures (CVE) ID CVE-2012-3073.
Cisco TelePresence Web Interface Command Injection
A vulnerability exists in the administrative web interface that could allow an authenticated, remote attacker to perform a command injection attack. An attacker could leverage this issue to send malicious requests to the device that, when processed, could allow the attacker to execute arbitrary commands with elevated privileges.
This vulnerability is documented in Cisco bug IDCSCth85804 (registered customers only) and has been assigned Common Vulnerabilities and Exposures (CVE) ID CVE-2012-3076.
Cisco TelePresence Cisco Discovery Protocol Remote Code Execution Vulnerability
A remote code execution vulnerability in the implementation of the Cisco Discovery Protocol component could allow an unauthenticated, adjacent attacker to execute arbitrary code with elevated privileges. The vulnerability is due to a failure to properly handle malformed Cisco Discovery Protocol packets. An attacker could exploit this vulnerability by passing malformed Cisco Discovery Protocol packets to an affected device. Successful exploitation of this vulnerability could allow the attacker to execute arbitrary code with elevated privileges.
Because Cisco Discovery Protocol works at the data link layer (Layer 2), an attacker must have a way to submit an Ethernet frame directly to an affected device. This action may be possible in situations where the affected system is part of a bridged network or connected to a non partitioned device, such as a network hub.
This vulnerability is documented in Cisco bug ID CSCtz40953 (registered customers only) and has been assigned Common Vulnerabilities and Exposures (CVE) ID CVE-2012-2486.
Vulnerability Scoring Details
Cisco has scored the vulnerabilities in this advisory based on the Common Vulnerability Scoring System (CVSS). The CVSS scoring in this security advisory is in accordance with CVSS version 2.0.
CVSS is a standards-based scoring method that conveys vulnerability severity and helps organizations determine the urgency and priority of a response.
Cisco has provided a base and temporal score. Customers can also compute environmental scores that help determine the impact of the vulnerability in their own networks.
Cisco has provided additional information regarding CVSS at the following link:
http://www.cisco.com/web/about/security/intelligence/cvss-qandas.html
Cisco has also provided a CVSS calculator to compute the environmental impact for individual networks at the following link:
http://intellishield.cisco.com/security/alertmanager/cvss
|
Cisco TelePresence Malformed IP Packets Denial of Service Vulnerability - CSCti21830 Calculate the environmental score of CSCti21830 |
||||||
|---|---|---|---|---|---|---|
|
CVSS Base Score - 7.8 |
||||||
|
Access Vector |
Access Complexity |
Authentication |
Confidentiality Impact |
Integrity Impact |
Availability Impact |
|
|
Network |
Low |
None |
None |
None |
Complete |
|
|
CVSS Temporal Score - 7.4 |
||||||
|
Exploitability |
Remediation Level |
Report Confidence |
||||
|
Functional |
Unavailable |
Confirmed |
||||
|
Cisco TelePresence Cisco Discovery Protocol Remote Code Execution Vulnerability - CSCtz40953 Calculate the environmental score of CSCtz40953 |
||||||
|---|---|---|---|---|---|---|
|
CVSS Base Score - 8.3 |
||||||
|
Access Vector |
Access Complexity |
Authentication |
Confidentiality Impact |
Integrity Impact |
Availability Impact |
|
|
Adjacent Network |
Low |
None |
Complete |
Complete |
Complete |
|
|
CVSS Temporal Score - 6.9 |
||||||
|
Exploitability |
Remediation Level |
Report Confidence |
||||
|
Functional |
Official-Fix |
Confirmed |
||||
|
Cisco TelePresence Web Interface Command Injection - CSCth85804 Calculate the environmental score of CSCth85804 |
||||||
|---|---|---|---|---|---|---|
|
CVSS Base Score - 9.0 |
||||||
|
Access Vector |
Access Complexity |
Authentication |
Confidentiality Impact |
Integrity Impact |
Availability Impact |
|
|
Network |
Low |
Single |
Complete |
Complete |
Complete |
|
|
CVSS Temporal Score - 7.4 |
||||||
|
Exploitability |
Remediation Level |
Report Confidence |
||||
|
Functional |
Official-Fix |
Confirmed |
||||
Impact
Successful exploitation of these vulnerabilities may cause a denial of service condition where the product does not respond to new connection requests and potentially crash some of the services and processes, or allow an attacker to execute arbitrary code or commands with elevated privileges.
Software Versions and Fixes
Cisco TelePresence Malformed IP Packets Denial of Service Vulnerability
| Version | Remediation |
|---|---|
| Prior to 1.6 |
No Fix |
| 1.6 |
No Fix |
| 1.7 |
No Fix |
| 1.8 |
No Fix |
Cisco TelePresence Web Interface Command Injection
| Version | Remediation |
|---|---|
| Prior to 1.6 |
1.8.0 |
| 1.6 |
1.8.0 |
| 1.7 |
1.8.0 |
| 1.8 |
1.8.0 |
Cisco TelePresence Cisco Discovery Protocol Remote Code Execution Vulnerability
| Version | Release |
|---|---|
| Prior to 1.6 |
1.8.1 |
| 1.6 |
1.8.1 |
| 1.7 |
1.8.1 |
| 1.8 |
1.8.1 |
Recommended Releases
The following table gives information about the releases that contains the fixes for all the vulnerabilities described in this security advisory:
| Version | Release |
|---|---|
| Prior to 1.6 |
1.8.1 or later |
| 1.6 |
1.8.1 or later |
| 1.7 |
1.8.1 or later |
| 1.8 |
1.8.1 or later |
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 provider.
Workarounds
Obtaining Fixed Software
Cisco has released free software updates that address the vulnerability described in this advisory. Prior to deploying software, customers are advised to consult their maintenance providers or check the software for feature set compatibility and known issues that are specific to their environments.
Customers may only install and expect support for feature sets they have purchased. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license at http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html.
Customers with Service Contracts
Customers with contracts should obtain upgraded software through their regular update channels. For most customers, upgrades should be obtained through the Software Navigator on Cisco.com at http://www.cisco.com/cisco/software/navigator.html.
Customers Using Third-Party Support Organizations
Customers with Cisco products that 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 organization for assistance with the appropriate course of action.
The effectiveness of any workaround or fix depends on specific customer situations, such as product mix, network topology, traffic behavior, and organizational mission. Because of the variety of affected products and releases, customers should consult their service providers or support organizations to ensure that any applied workaround or fix is the most appropriate in the intended network before it is deployed.
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):
- +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 the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade. Customers without service contracts should request free upgrades through the TAC.
Refer to Cisco Worldwide Contacts at http://www.cisco.com/en/US/support/tsd_cisco_worldwide_contacts.html for additional TAC contact information, including localized telephone numbers, instructions, and e-mail addresses for support in various languages.
Exploitation and Public Announcements
The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.
These vulnerabilities were identified during an internal security audit of the Cisco TelePresence Recording Server.
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 Security Intelligence Operations at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120711-ctrs
Additionally, a text version of this advisory is clear signed with the Cisco PSIRT PGP key and circulated among the following e-mail addresses:
- 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
Future updates of this advisory, if any, will reside on Cisco.com but may not be announced on mailing lists. Users can monitor this advisory's URL for any updates.
Revision History
| Revision 1.1 | 2012-July-31 | Fixed incorrect hyperlink. |
| Revision 1.0 | 2012-July-11 | Initial public release. |
Cisco Security Procedures
Complete information about reporting security vulnerabilities in Cisco products, obtaining assistance with security incidents, and registering to receive security information from Cisco is available on Cisco.com at http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html. This web page includes instructions for press inquiries regarding Cisco Security Advisories. All Cisco Security Advisories are available at http://www.cisco.com/go/psirt.
