Products & Services
Support

Product Categories


Popular Downloads


Manage Software

How to Buy

For Home

Linksys Products Store
Linksys is now part of Belkin
Products for everyone

All Ordering Options

Training & Events Partners
Guest

Vulnerability Alert

Cisco TelePresence TC and TE Software SIP Packet Processing Denial of Service Vulnerability

 
Threat Type:CWE-20: Input Validation
IntelliShield ID:29649
Version:1
First Published:2013 June 19 16:25 GMT
Last Published:2013 June 19 16:25 GMT
Port: Not available
CVE:CVE-2013-3378
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Mild Damage
CVSS Base:7.8 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:6.4
Related Resources:
View related Security AdvisoryView related IPS Signature
 
 
Version Summary:Multiple Cisco TelePresence products running Cisco TelePresence TC and TE Software contain a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service condition. Updates are available.
 
 
Description
A vulnerability in the implementation of the Session Initiation Protocol (SIP) engine of Cisco TelePresence products running Cisco TelePresence TC and TE Software could allow an unauthenticated, remote attacker to cause the affected device to become unresponsive.

The vulnerability is due to insufficient validation of crafted SIP packets. An attacker could exploit this vulnerability by sending a SIP packet to the affected system. An exploit could allow the attacker to cause the affected device to become unresponsive for a certain amount of time. Repeated exploitation may cause a denial of service (DoS) condition.

Cisco has confirmed the vulnerability in a security advisory and has released software updates.
 
Warning Indicators
The following Cisco TelePresence products running vulnerable versions of Cisco TelePresence TC and TE Software are affected:
  • Cisco TelePresence MX Series running on TC versions prior to TC6.1
  • Cisco TelePresence System EX Series running on TC versions prior to TC6.1
  • Cisco TelePresence System EX Series running on TE6.0
  • Cisco Telepresence Integrator C Series running on TC versions prior to TC6.1
  • Cisco TelePresence Profiles Series running on TC versions prior to TC6.1
  • Cisco TelePresence Quick Set Series running on TC versions prior to TC6.1
  • Cisco IP Video Phone E20 running on TE versions prior to TE4.1.3
 
IntelliShield Analysis
To exploit this vulnerability, an attacker may need access to a trusted, internal network to send crafted SIP packets through a vulnerable system. This access requirement may reduce the likelihood of a successful exploit.

Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available.
 
Vendor Announcements
Cisco has released a security advisory for Cisco bug ID CSCuf89557 at the following link: cisco-sa-20130619-tpc
 
Impact
An unauthenticated, remote attacker could exploit this vulnerability to cause an affected device to become unresponsive or reload, resulting in a DoS condition.
 
Technical Information
The vulnerability is due to insufficient validation of user-supplied input processed by the SIP engine on Cisco TelePresence products running affected versions of Cisco TelePresence TC and TE Software.

An unauthenticated, remote attacker could exploit this vulnerability by sending a crafted SIP packet to the affected system. Successful exploitation could allow the attacker to cause the affected device to become unresponsive for a certain amount of time, which may cause a DoS condition.
 
Safeguards
Administrators are advised to apply the appropriate updates.

Administrators may consider disabling SIP if this feature is not used by issuing the following xCommand: xConfiguration NetworkServices SIP Mode: Off. Administrators could also disable SIP service from the web interface by navigating to Configuration > Advanced Configuration > Network Services and setting the SIP mode to Off.

Administrators are advised to allow only trusted users to have network access.

Administrators are advised to monitor affected systems.
 
Patches/Software
Cisco customers with active contracts can obtain updates through the Software Center at the following link: Cisco. Cisco customers without contracts can obtain upgrades by contacting the Cisco Technical Assistance Center at 1-800-553-2447 or 1-408-526-7209 or via email at tac@cisco.com.
 
Alert History
 
Initial Release


Product Sets
 
The security vulnerability applies to the following combinations of products.

Primary Products:
CiscoCisco TelePresence TC Software 3.1 Base, .5 | 4.2 Base, .4 | 5.0 Base, .2, .2-CUCM | 5.1 Base, .3, .3-CUCM, .4, .4-CUCM, .5, .5-CUCM, .6, .6-CUCM, .7, .7-CUCM | 6.0 Base, .0, .0-CUCM, .1, .1-CUCM, .2
CiscoCisco TelePresence TE Software 4.0 Base, .0 | 4.1 Base, .1, .1-CUCM, .2, .2-CUCM | 6.0 Base, .0, .1, .2

Associated Products:
N/A




Alerts and bulletins on the Cisco Security Intelligence Operations Portal are highlighted by analysts in the Cisco Threat Operations Center and represent a subset of the comprehensive content that is available through Cisco Security IntelliShield Alert Manager Service. This customizable threat and vulnerability alert service provides security staff with access to timely, accurate, and credible information about threats and vulnerabilities that may affect their environment.


LEGAL DISCLAIMER
The urgency and severity ratings of this alert are not tailored to individual users; users may value alerts differently based upon their network configurations and circumstances. THE ALERT, AND INFORMATION CONTAINED THEREIN, ARE PROVIDED ON AN "AS IS" BASIS AND DO NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE ALERT, AND INFORMATION CONTAINED THEREIN, OR MATERIALS LINKED FROM THE ALERT, IS AT YOUR OWN RISK. INFORMATION IN THIS ALERT AND ANY RELATED COMMUNICATIONS IS BASED ON OUR KNOWLEDGE AT THE TIME OF PUBLICATION AND IS SUBJECT TO CHANGE WITHOUT NOTICE. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE ALERTS AT ANY TIME.
Powered by  IntelliShield