Summary

• Cisco TelePresence TC and TE Software are affected by the following vulnerabilities:
  

  • Six Session Initiation Protocol (SIP) denial of service vulnerabilities
  • Cisco TelePresence TC and TE Software DNS Buffer Overflow Vulnerability
  • Cisco TelePresence TC and TE Software Input Validation Vulnerability
  • Cisco TelePresence TC and TE Software tshell Command Injection Vulnerability
  • Cisco TelePresence TC and TE Software Heap Overflow Vulnerability
  • Cisco TelePresence TC and TE Software U-Boot Buffer Overflow Vulnerability
  • Cisco TelePresence TC and TE Software Unauthenticated Serial Port Access Vulnerability
  • Cisco TelePresence TC H.225 Denial of Service Vulnerability

  Successful exploitation of these vulnerabilities could allow an attacker to cause the affected system to reload, execute arbitrary commands or obtain privileged access to the affected system.
  
  

  Note: This security advisory does not provide information about the OpenSSL TLS Heartbeat Read Overrun Vulnerability identified by CVE-2014-0160 (also known as Heartbleed). For additional information on Cisco products affected by the Heartbleed vulnerability, refer to the Cisco Security Advisory available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20140409-heartbleed

  
  
  Cisco has released software updates that address these vulnerabilities. There are no workarounds that mitigate these vulnerabilities. This advisory is available at the following link:
  https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20140430-tcte

Affected Products

• Vulnerable Products

  The following products running a vulnerable version of Cisco TelePresence TC or TE Software are affected by the vulnerabilities described in this advisory:
  

  • Cisco TelePresence MX Series
  • Cisco TelePresence System EX Series
  • Cisco TelePresence Integrator C Series
  • Cisco TelePresence Profiles Series
  • Cisco TelePresence Quick Set Series
  • Cisco TelePresence System T Series
  • Cisco TelePresence VX Clinical Assistant

  Products Confirmed Not Vulnerable

  No other Cisco products are currently known to be affected by these vulnerabilities.

Details

• Multiple SIP Denial of Service Vulnerabilities
  
  Multiple vulnerabilities in the SIP code of Cisco TelePresence TC and TE Software could allow an unauthenticated, remote attacker to cause the affected system to become unresponsive and reload.
  

  These vulnerabilities are due to improper handling of crafted or malformed SIP packets. An attacker could exploit this vulnerability by sending the crafted packets to the affected system.
  
  These vulnerabilities can be triggered by SIP messages sent via UDP or TCP. Messages sent via Transport Layer Security (TLS) will also be affected. The default ports for UDP and TCP deployments are UDP port 5060 and TCP port 5060. The default port for TLS deployment is TCP port 5061.
  

  
  These vulnerabilities are documented in Cisco bug IDs CSCud29566 (registered customers only), CSCua64961 (registered customers only), CSCuj94651 (registered customers only), CSCtq72699 (registered customers only), CSCto70562 (registered customers only), and CSCua86589 (registered customers only).
  
  
  The vulnerabilities have been assigned the following Common Vulnerabilities and Exposures (CVE) IDs: CVE-2014-2162, CVE-2014-2163, CVE-2014-2164, CVE-2014-2165, CVE-2014-2166 and CVE-2014-2167.
  
  Cisco TelePresence TC and TE Software DNS Buffer Overflow Vulnerability
  
  A vulnerability in the implementation of the DNS code of Cisco TelePresence TC and TE Software could allow an unauthenticated, remote attacker to create a buffer overflow and execute arbitrary code.
  
  The vulnerability is due to insufficient bounds check on variables. An attacker could exploit this vulnerability by injecting crafted DNS response packets.
  
  This vulnerability is documented in Cisco bug ID CSCty44804 (registered customers only) and has been assigned CVE ID CVE-2014-2168.
  
  Cisco TelePresence TC and TE Software Input Validation Vulnerability
  
  A vulnerability in the implementation of internal system scripts of the Cisco TelePresence TC and TE Software could allow an authenticated, remote attacker to inject arbitrary commands that are executed with the privilege of the root user.
  
  The vulnerability is due to the improper validation of parameters passed to the affected system scripts. An attacker could exploit this vulnerability by passing arbitrary commands as arguments to the affected scripts.
  
  This vulnerability is documented in Cisco bug ID CSCue60211 (registered customers only) and has been assigned CVE ID CVE-2014-2169.
  
  Cisco TelePresence TC and TE Software tshell Command Injection Vulnerability
  
  A vulnerability in the implementation of several system scripts of Cisco TelePresence TC and TE Software could allow an authenticated, remote attacker to inject arbitrary commands with the privileges of the root user via tshell (tcsh).
  
  The vulnerability is due to the improper implementation of the code in several scripts that can be executed on the affected system. An attacker could exploit this vulnerability by passing arbitrary commands while executing the affected scripts.
  
  This vulnerability is documented in Cisco bug ID CSCue60202 (registered customers only) and has been assigned CVE ID CVE-2014-2170.
  
  Cisco TelePresence TC and TE Software Heap Overflow Vulnerability
  
  A vulnerability in the SIP code of Cisco TelePresence TC and TE Software could allow an unauthenticated, remote attacker to create a heap overflow condition. This condition could allow the attacker to execute arbitrary code or cause the affected system to reload.
  

  The vulnerability is due to improper handling of crafted SIP packets. An attacker could exploit this vulnerability by sending crafted SIP packets to the affected system.

  
  
  This vulnerability can be triggered by SIP messages sent via UDP or TCP. Messages sent via Transport Layer Security (TLS) will also be affected. The default ports for UDP and TCP deployments are UDP port 5060 and TCP port 5060. The default port for TLS deployment is TCP port 5061.
  
  This vulnerability is documented in Cisco bug ID CSCud81796 (registered customers only) and has been assigned CVE ID CVE-2014-2171.
  
  Cisco TelePresence TC and TE Software U-Boot Buffer Overflow Vulnerability
  
  A vulnerability in the implementation of executable utilities that use the universal bootloader (u-boot) compiler of Cisco TelePresence TC and TE Software could allow an authenticated, local attacker to create a buffer overflow and possibly execute arbitrary code on the affected system.
  

  The vulnerability is due to the improper implementation of internal executable files when the u-boot compiler flag is defined. An attacker could exploit this vulnerability by accessing the affected system command-line interface (CLI) and try to run the affected executable files.

  
  
  This vulnerability is documented in Cisco bug ID CSCub67693 (registered customers only) and has been assigned CVE ID CVE-2014-2172.
  
  Cisco TelePresence TC and TE Software Unauthenticated Serial Port Access Vulnerability
  
  A vulnerability in the authentication code of Cisco TelePresence TC and TE Software could allow an unauthenticated, local attacker to connect to the serial port and obtain privileged access to the affected system.
  

  The vulnerability is due to the improper implementation of authentication and authorization controls for the serial port. An attacker could exploit this vulnerability by connecting to the affected port and run a series of commands.

  
  
  This vulnerability is documented in Cisco bug ID CSCub67692 (registered customers only) and has been assigned CVE ID CVE-2014-2173.
  
  
  Cisco TelePresence TC H.225 Denial of Service Vulnerability
  
  

  A vulnerability in the H.225 code of Cisco TelePresence TC Software could allow an unauthenticated, remote attacker to cause the affected system to exhaust the available memory and to reload.
  
  The vulnerability is due to the improper handling of crafted or malformed H.225 packets. An attacker could exploit this vulnerability by sending crafted packets to the affected system.

  
  
  This vulnerability is documented in Cisco bug ID CSCtq78849 (registered customers only) and has been assigned CVE ID CVE-2014-2175.

Workarounds

• There are no workarounds that mitigate these vulnerabilities.

Fixed Software

• When considering software upgrades, customers are advised to consult the Cisco Security Advisories, Responses, and Notices 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.
  

  Note: This security advisory does not provide information about the OpenSSL TLS Heartbeat Read Overrun Vulnerability identified by CVE-2014-0160 (also known as Heartbleed).
  For additional information regarding Cisco products affected by this vulnerability, refer to the Cisco Security Advisory available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20140409-heartbleed
  
  Customer are advise to read the Cisco Security Advisory concerning the Heartbleed vulnerability before determining to which software release to upgrade.
  
  The following table lists the first fixed release for each of the Cisco TelePresence TC and TE Software versions. The last row indicates the releases that resolve all the vulnerabilities described in this advisory:
  
  

  	Cisco TelePresence TC and TE Software First Fixed 4.x	Cisco TelePresence TC First Fixed 5.x	Cisco TelePresence TC First Fixed 6.x	Cisco TelePresence TE First Fixed 6.0	Cisco TelePresence TC First Fixed 7.x
  Cisco TelePresence TC and TE Software SIP Denial of Service Vulnerability - CSCud29566	Migrate to TC 6.x or later	Migrate to TC 6.x or later	Not Affected	Migrate to TC 6.x or later	Not Affected
  Cisco TelePresence TC and TE Software SIP Denial of Service Vulnerability - CSCua64961	Migrate to TC 6.x or later	Migrate to TC 6.x or later	Not Affected	Not Affected	Not Affected
  Cisco TelePresence TC and TE Software SIP Denial of Service Vulnerability - CSCuj94651	Migrate to TC 6.x or later	Migrate to TC 6.x or later	Not Affected	Migrate to TC 6.x or later	Not Affected
  Cisco TelePresence TC and TE Software SIP Denial of Service Vulnerability - CSCtq72699	Migrate to TC 6.x or later	Migrate to TC 6.x or later	Not Affected	Migrate to TC 6.x or later	Not Affected
  Cisco TelePresence TC and TE Software SIP Denial of Service Vulnerability - CSCto70562	Migrate to TC 5.x or later	Not Affected	Not Affected	Not Affected	Not Affected
  Cisco TelePresence TC and TE Software SIP Denial of Service Vulnerability - CSCua86589	Migrate to TC 6.x or later	Migrate to TC 6.x or later	Not Affected	Migrate to TC 6.x or later	Not Affected
  Cisco TelePresence TC and TE Software DNS Buffer Overflow Vulnerability - CSCty44804	Migrate to TC 6.x or later	Migrate to TC 6.x or later	Not Affected	Migrate to TC 6.x or later	Not Affected
  Cisco TelePresence TC and TE Software Input Validation Vulnerability - CSCue60211	Migrate to TC 6.x or later	Migrate to TC 6.x or later	TC 6.2.0	Migrate to TC 6.x or later	Not Affected
  Cisco TelePresence TC and TE Software tshell Command Injection Vulnerability - CSCue60202	Migrate to TC 5.x or later	5.1.7	TC 6.0.1	Migrate to TC 6.x or later	Not Affected
  Cisco TelePresence TC and TE Software Heap Overflow Vulnerability - CSCud81796	Migrate to TC 6.x or later	Migrate to TC 6.x or later	TC 6.0.1	TE 6.0.2	Not Affected
  Cisco TelePresence TC and TE Software U-Boot Buffer Overflow Vulnerability - CSCub67693	Migrate to TC 6.x or later	Migrate to TC 6.x or later	Not Affected	Migrate to TC 6.x or later	Not Affected
  Cisco TelePresence TC and TE Software Unauthenticated Serial Port Access Vulnerability - CSCub67692	Migrate to TC 6.x or later	Migrate to TC 6.x or later	Not Affected	Migrate to TC 6.x or later	Not Affected
  Cisco TelePresence TC H.225 Denial of Service Vulnerability - CSCtq78849	Migrate to TC 6.x or later	Migrate to TC 6.x or later	Not Affected	Migrate to TC 6.x or later	Not Affected
  Releases that fix all the vulnerabilities in this advisory	Migrate to TC 6.x or later	Migrate to TC 6.x or later	TC 6.3.1	Migrate to TC 6.x or later	TC 7.1.1

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 discovered during internal testing or during the resolution of support cases.

URL

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20140430-tcte

Revision History

• Revision 1.0

  2014-April-30

  Initial public release

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