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Cisco Security Advisory

Multiple Vulnerabilities in Cisco ASA 5500 Series Adaptive Security Appliances and Cisco Catalyst 6500 Series ASA Services Module

Advisory ID: cisco-sa-20120314-asa

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120314-asa

Revision 1.0

For Public Release 2012 March 14 16:00  UTC (GMT)


Summary

Cisco ASA 5500 Series Adaptive Security Appliances (ASA) and Cisco Catalyst 6500 Series ASA Services Module (ASASM) are affected by the following vulnerabilities:

  • Cisco ASA UDP Inspection Engine Denial of Service Vulnerability
  • Cisco ASA Threat Detection Denial of Service Vulnerability
  • Cisco ASA Syslog Message 305006 Denial of Service Vulnerability
  • Protocol Independent Multicast Denial of Service Vulnerability

These vulnerabilities are independent of each other; a release that is affected by one of the vulnerabilities may not be affected by the others.

Cisco has released free software updates that address these vulnerabilities. Workarounds are available to mitigate some of the vulnerabilities. This advisory is available at the following link:

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120314-asa

Note: The Cisco Catalyst 6500 Series Firewall Services Module (FWSM) may be affected by some of the vulnerabilities above.
A separate Cisco Security Advisory has been published to disclose the vulnerabilities that affect the Cisco FWSM. This advisory is available at: http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120314-fwsm

Affected Products

Cisco ASA 5500 Series Adaptive Security Appliances and Cisco Catalyst 6500 Series ASA Services Module are affected by multiple vulnerabilities. Affected versions of Cisco ASA Software will vary depending on the specific vulnerability. Consult the "Software Versions and Fixes" section of this security advisory for more information about the affected version.

Cisco PIX Security Appliances may be affected by some of the vulnerabilities described in this security advisory. Cisco PIX has reached end of maintenance support. Cisco PIX Security Appliance customers are encouraged to migrate to Cisco ASA 5500 Series Adaptive Security Appliances. Consult the dedicated section for Cisco PIX Security Appliances in the "Vulnerable Products" section of this security advisory for more information about affected versions.

Vulnerable Products

For specific version information, refer to the "Software Versions and Fixes" section of this advisory.

Cisco ASA UDP Inspection Engine Denial of Service Vulnerability

The Cisco ASA UDP inspection engine that is used to inspect UDP-based protocols contains a vulnerability that could allow a remote unauthenticated attacker to trigger a reload of the Cisco ASA.

All UDP protocols that are being inspected by the Cisco ASA UDP inspection engine may be vulnerable. The following protocols are known to use the Cisco ASA UDP inspection engine:

  • Domain Name System (DNS)
  • Session Initiation Protocol (SIP)
  • Simple Network Management Protocol (SNMP)
  • GPRS Tunneling Protocol (GTP)
  • H.323, H.225 RAS
  • Media Gateway Control Protocol (MGCP)
  • SunRPC
  • Trivial File Transfer Protocol (TFTP)
  • X Display Manager Control Protocol (XDMCP)
  • IBM NetBios
  • Instant Messaging (depending on the particular IM client/solution being used)

Note: UDP inspection engines may be enabled by default on Cisco ASA Software. Please consult your user guide for more information.

The default inspected ports are listed at the following link: http://www.cisco.com/en/US/docs/security/asa/asa84/configuration/guide/inspect_overview.html

Note: The Cisco ASA UDP inspection can be applied to non-default UDP ports via class-map and policy-map commands. Any instance of use of the Cisco ASA UDP inspection engines may be vulnerable to this vulnerability, thus, configurations that include non-default UDP ports but use the Cisco ASA UDP inspection engine are considered vulnerable.

To determine whether any of the above inspections are enabled, issue the show service-policy | include <inspection engine name> command and confirm that the command returns output. The following example shows a Cisco ASA configured to inspect IBM NetBIOS traffic:
ciscoasa# show service-policy | include netbios
  Inspect: netbios, packet 0, drop 0, reset-drop 0

Cisco ASA Threat Detection Denial of Service Vulnerability

The Cisco ASA Threat Detection feature, when configured with the Scanning Threat Mode feature and with shun option enabled, contains a vulnerability that could allow a remote unauthenticated attacker to trigger a reload of the Cisco ASA. This feature is not enabled by default.

To determine whether the Cisco ASA Threat Detection with Scanning Threat feature and shun option is enabled, issue the show running-config threat-detection scanning-threat command and confirm that the returned output includes the shun option. The following example shows a vulnerable configuration:
ciscoasa# show running-config threat-detection scanning-threat
threat-detection scanning-threat shun
Note: This feature was first introduced in Cisco ASA Software Version 8.0(2), Previous versions of Cisco ASA are not vulnerable.




Cisco ASA Syslog Message 305006 Denial of Service Vulnerability

A denial of service (DoS) vulnerability exists in the implementation of one specific system log (syslog) message (message ID 305006), that could cause a reload of the Cisco ASA if this syslog message needs to be generated.

Syslog message ID 305006 is generated when the Cisco ASA is unable to create a network address translation for a new connection. Additional information regarding this syslog message can be found in the Cisco ASA System Log Messages guide at: http://www.cisco.com/en/US/products/ps6120/products_system_message_guides_list.html. Logging is not enabled by default on Cisco ASA, however, when logging is enabled, Cisco ASA will automatically enable syslog message 305006.

Cisco ASA Software may be affected by this vulnerability if the following conditions are satisfied:

  • System logging is enabled and syslogs are configured to be sent to any syslog destination (including Buffer or ASDM for example)
  • Cisco ASA Software is configured in any way to generate syslog message 305006
Syslog message 305006 has a default severity level of 3 (errors). Cisco ASA Software configured for logging at Level 3 or higher (that is Levels 3 through 7) may be vulnerable. To verify if logging is enabled, issue the show logging command. The following example shows a Cisco ASA with logging enabled and buffer logging enabled at Level 6 (informational):
ciscoasa# show logging
Syslog logging: enabled
Facility: 20
Timestamp logging: disabled
Standby logging: disabled
Debug-trace logging: disabled
Console logging: disabled
Monitor logging: disabled
Buffer logging: level informational, 2 messages logged
Trap logging: disabled
Permit-hostdown logging: disabled
History logging: disabled
Device ID: disabled
Mail logging: disabled
ASDM logging: disabled

Using a custom message list (created via the logging list command) that includes syslog message 305006, either by severity or by explicitly including the message ID, is also a vulnerable configuration.

The default severity level of syslog messages can be changed. If the default severity level of syslog message 305006 is changed and the device is configured to log to any destination at the new severity level, the device is vulnerable.

Note: This vulnerability was introduced after the implementation of the new Cisco ASA  Identity Firewall (IDFW) feature. The Cisco ASA IDFW feature was introduced in the Cisco ASA Software Version 8.4(2), thus previous versions of Cisco ASA Software are not affected.

Protocol Independent Multicast Denial of Service Vulnerability

Cisco ASA Sofware is affected by a vulnerability that may cause affected devices to reload during the processing of Protocol-Indipendent Multicast (PIM) message when multicast routing is enabled. This feature is not enabled by default.

To verify if PIM is enabled on an interface use the show pim interface command and verify that the state on appears under the PIM column. The following example shows PIM enabled on the interface outside but disabled on the interface inside:

ciscoasa# show pim interface

Address Interface PIM Nbr Hello DR DR
Count Intvl Prior

192.168.1.1 outside on 0 30 1 this system
192.168.2.1      inside             off  0     30     1          this system

Note: Cisco ASA is vulnerable if at least one interface state is marked with on under the PIM column of the show pim interface command output.


Determine the Running Software Version

To determine whether a vulnerable version of Cisco ASA Software is running on an appliance, administrators can issue the show version command. The following example shows a Cisco ASA 5500 Series Adaptive Security Appliance that is running software version 8.4(1):
ciscoasa#show version | include Version
Cisco Adaptive Security Appliance Software Version 8.4(1)
Device Manager Version 6.4(1)
Customers who use Cisco Adaptive Security Device Manager (ASDM) to manage devices can locate the software version in the table that is displayed in the login window or upper-left corner of the Cisco ASDM window.

Information about Cisco PIX Security Appliance

Cisco PIX may be affected by some of the vulnerabilities described in this security advisory. Cisco PIX has reached end of maintenance support. Cisco PIX customers are encouraged to migrate to Cisco ASA.

All versions of the Cisco PIX Security Appliances Software are affected by the Protocol Independent Multicast Denial of Service Vulnerability.

Version 8.0 of Cisco PIX Security Appliances Software is affected by the Cisco ASA UDP Inspection Engine Denial of Service Vulnerability and Cisco ASA Threat Detection Denial of Service Vulnerability

Cisco PIX Security Appliances is not vulnerable to Cisco ASA Syslog Message 305006 Denial of Service Vulnerability.

Products Confirmed Not Vulnerable

With the exception of the Cisco FWSM, no other Cisco products are currently known to be affected by these vulnerabilities.

Details

The following section gives additional detail about each vulnerability.

Cisco ASA UDP Inspection Engine Denial of Service Vulnerability

Inspection engines are required for services that embed IP addressing information in the user data packet or that open secondary channels on dynamically assigned ports. Cisco ASA Software supports a number of inspection engines for UDP and TCP-based protocols.

The Cisco ASA UDP inspection engine that is used to inspect UDP-based protocols contains a vulnerability that could allow a remote unauthenticated attacker to trigger a reload of the Cisco ASA. The vulnerability is due to improper flow handling by the inspection engine. An attacker could exploit this vulnerability by sending a specially crafted sequence through the affected system.

All UDP protocols that are inspected by the inspection engine may be vulnerable to this vulnerability. The following protocols are known to use UDP inspection engine:

  • Domain Name System (DNS)
  • Session Initiation Protocol (SIP)
  • Simple Network Management Protocol (SNMP)
  • GPRS Tunneling Protocol (GTP)
  • H.323, H.225 RAS
  • Media Gateway Control Protocol (MGCP)
  • SunRPC
  • Trivial File Transfer Protocol (TFTP)
  • X Display Manager Control Protocol (XDMCP)
  • IBM NetBios
  • Instant Messaging (depending on the particular IM client/solution being used)

Inspection engines may be enabled by default on Cisco ASA Software. Please consult your user guide for more information. The default inspected ports are listed at the following link: http://www.cisco.com/en/US/docs/security/asa/asa84/configuration/guide/inspect_overview.html#wp1536127

Note: Only transit traffic can be used to exploit this vulnerability. This vulnerability affects both routed and transparent firewall mode in both single and multi-context mode. This vulnerability can be triggered by IPv4 and IPv6 traffic. Only UDP traffic can trigger this vulnerability.

This vulnerability is documented in Cisco bug ID, CSCtq10441 (registered customers only) and has been assigned Common Vulnerabilities and Exposures (CVE) ID CVE-2012-0353.

Cisco ASA Threat Detection Denial of Service Vulnerability

The Cisco ASA Threat Detection feature consists of different levels of statistics gathered for various threats, as well as scanning threat detection, which determines when a host is performing a scan. Optionally, you can shun any hosts that are determined to be a scanning threat.

The Cisco ASA Threat Detection feature, when configured with the Cisco ASA Scanning Threat Mode feature and with the shun option enabled, contains a vulnerability that could allow a remote, unauthenticated attacker to trigger a reload of the Cisco ASA. The vulnerability is due to improper handling of the internal flaw that is triggered by the shun event. An attacker may exploit this vulnerability by sending IP packets through the affected system in a way that triggers the shun option of Threat Detection scanning feature.

Note: Only transit traffic can be used to exploit this vulnerability. This vulnerability affects both routed and transparent firewall mode only in single context mode. This vulnerability can be triggered by IPv4 and IPv6 traffic.

This vulnerability is documented in Cisco bug ID, CSCtw35765 (registered customers only) and has been assigned CVE ID CVE-2012-0354.

Cisco ASA Syslog Message 305006 Denial of Service Vulnerability

Cisco ASA Software has a System Log (syslog) feature that provides information for monitoring normal operation and troubleshooting network or device issues. Syslog messages are assigned different severities (including debugging, informational, error and critical, for example) and can be sent to different logging destinations.

A denial of service vulnerability is in the implementation of one specific syslog message (message ID 305006), that can cause a reload of the Cisco ASA if this syslog message needs to be generated. An attacker could exploit this vulnerability by sending a sequence of packets that could trigger the generation of the syslog message.

Syslog message ID 305006 is generated when the Cisco ASA is unable to create a network address translation for a new connection. Additional information about this syslog message can be found in the Cisco ASA System Log Messages guide: http://www.cisco.com/en/US/products/ps6120/products_system_message_guides_list.html

Note: Only transit traffic can be used to exploit this vulnerability. This vulnerability affects both routed and transparent firewall mode in both single and multi-context mode. This vulnerability can be triggered by IPv4 and IPv6 traffic.


This vulnerability is documented in Cisco bug ID, CSCts39634 (registered customers only) and has been assigned CVE ID CVE-2012-0355.

Protocol Independent Multicast Denial of Service Vulnerability

Multicast routing is a bandwidth-conserving technology that reduces traffic by simultaneously delivering a single stream of information to multiple recipients.

Protocol Independent Multicast (PIM) is a multicast routing protocol that is independent of any IP routing protocol. PIM can leverage any unicast routing protocols that are in use, including Exterior Gateway Routing Protocol (EIGRP), Open Shortest Path First (OSPF), Border Gateway Protocol (BGP), or static routes, to populate the unicast routing table. PIM uses this unicast routing information to perform the multicast forwarding function, and is IP protocol-independent. Although PIM is called a multicast routing protocol, it actually uses the unicast routing table to perform the Reverse Path Forwarding (RPF) check function instead of building a completely independent multicast routing table. PIM does not send or receive multicast routing updates between routers as do other routing protocols.

A vulnerability exists in the way PIM is implemented that may cause affected devices to reload during the processing of a PIM message when multicast routing is enabled. The vulnerability is due to improper handling of PIM messages. An attacker could exploit this vulnerability by sending a crafted PIM message to the affected system.


Note: This vulnerability affects Cisco ASA configured only in routed firewall mode and only in single context mode. This vulnerability can be triggered only by IPv4 PIM message as PIM over IPv6 is currently not supported.

This vulnerability is documented in Cisco bug ID, CSCtr47517 (registered customers only) and has been assigned CVE ID CVE-2012-0356.

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



CSCtq10441- UDP inspection engines denial of service vulnerability

Calculate the environmental score of CSCtq10441

CVSS Base Score - 7.1

Access Vector

Access Complexity

Authentication

Confidentiality Impact

Integrity Impact

Availability Impact

Network

Medium

None

None

None

Complete

CVSS Temporal Score - 5.9

Exploitability

Remediation Level

Report Confidence

Functional

Official-Fix

Confirmed



CSCtw35765- Threat Detection Denial Of Service Vulnerability

Calculate the environmental score of CSCtw35765

CVSS Base Score - 7.1

Access Vector

Access Complexity

Authentication

Confidentiality Impact

Integrity Impact

Availability Impact

Network

Medium

None

None

None

Complete

CVSS Temporal Score - 5.9

Exploitability

Remediation Level

Report Confidence

Functional

Official-Fix

Confirmed



CSCts39634 - Syslog Message 305006 Denial of Service Vulnerability

Calculate the environmental score of CSCts39634

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 - 6.4

Exploitability

Remediation Level

Report Confidence

Functional

Official-Fix

Confirmed



CSCtr47517 - Protocol-Independent Multicast Denial of Service Vulnerability

Calculate the environmental score of CSCtr47517

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 - 6.4

Exploitability

Remediation Level

Report Confidence

Functional

Official-Fix

Confirmed

Impact

Successful exploitation of any of the vulnerabilities described in this security advisory may allow a remote, unauthenticated attacker to reload the affected system.

Software Versions and Fixes

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 providers.

Cisco ASA UDP Inspection Engine Denial of Service Vulnerability

Vulnerability Major Release
First Fixed Release
Cisco ASA UDP Inspection Engine Denial of Service Vulnerability - CSCtq10441
7.0 Not Affected
7.1 Not Affected
7.2 Not Affected
8.0 8.0(5.25)
8.1 8.1(2.50)
8.2 8.2(5.5)
8.3 8.3(2.22)
8.4 8.4(2.1)
8.5 8.5(1.2)
8.6 Not Affected

Cisco ASA Threat Detection Denial of Service Vulnerability

Vulnerability Major Release
First Fixed Release
Cisco ASA Threat Detection Denial of Service Vulnerability - CSCtw35765
7.0 Not Affected
7.1 Not Affected
7.2 Not Affected
8.0 Migrate to 8.2(5.20)
8.1 Migrate to 8.2(5.20)
8.2 8.2(5.20)
8.3 8.3(2.29)
8.4 8.4(3)
8.5 8.5(1.6)
8.6 8.6(1.1)

Cisco ASA Syslog Message 305006 Denial of Service Vulnerability

Vulnerability Major Release
First Fixed Release
Cisco ASA Syslog Message 305006 Denial of Service Vulnerability - CSCts39634
7.0 Not Affected
7.1 Not Affected
7.2 Not Affected
8.0 Not Affected
8.1 Not Affected
8.2 Not Affected
8.3 Not Affected
8.41 8.4(2.11)
8.5 8.5(1.4)
8.6 Not Affected

1This vulnerability has been introduced after the implementation of a new Cisco ASA feature called Identity Firewall (IDFW). Cisco ASA IDFW feature has been introduced in Cisco ASA version 8.4(2), thus, previous version of Cisco ASA are not affected.

Protocol Independent Multicast Denial of Service Vulnerability

Vulnerability Major Release
First Fixed Release
Protocol Independent Multicast Denial of Service Vulnerability - CSCtr47517
7.0 Migrate to 7.2(5.7)
7.1 Migrate to 7.2(5.7)
7.2 7.2(5.7)
8.0 8.0(5.27)
8.1 8.1(2.53)
8.2 8.2(5.8)
8.3 8.3(2.25)
8.4 8.4(2.5)
8.5 8.5(1.2)
8.6
Not Affected

Recommended Releases

The following table lists all recommended releases. These recommended releases contain the fixes for all vulnerabilities in this advisory. Cisco recommends upgrading to a release that is equal to or later than these recommended releases.

Major Release

Recommended Release

7.0 Migrate to 7.2(5.7)
7.1 Migrate to 7.2(5.7)
7.2 7.2(5.7)
8.0 Migrate to 8.2(5.26)
8.1 Migrate to 8.2(5.26)
8.2 8.2(5.26)
8.3 8.4(3.8)
8.4 8.4(3.8)
8.5 8.5(1.7)
8.6 8.6(1.1)

 

Software Download

Cisco ASA Software can be downloaded from the Software Center on Cisco.com by visiting http://www.cisco.com/cisco/software/navigator.html

For Cisco ASA 5500 Series Adaptive Security Appliances, navigate to Products > Security > Firewall > Firewall Appliances > Cisco ASA 5500 Series Adaptive Security Appliances > <your Cisco ASA model> > Adaptive Security Appliance (ASA) Software. Please note that some of these versions are interim versions and they can be found by expanding the Interim tab on the download page.

For Cisco Catalyst 6500 Series ASA Services Module, navigate to Products > Cisco Interfaces and Modules > Cisco Services Modules >Cisco Catalyst 6500 Series ASA Services Module > ASA Services Module (ASASM) Software. Please note that some of these versions are interim versions and they can be found by expanding the Interim tab on the download page.


Workarounds

The following section will detail the workaround if available for each vulnerability detailed in this security advisory.

Cisco ASA UDP Inspection Engine Denial of Service Vulnerability

There are no workarounds that mitigate this vulnerability.

Cisco ASA Threat Detection Denial of Service Vulnerability

If the shun option needs to be enabled, there are no workarounds that mitigate this vulnerability. However, if this option is not required, you can workaround this vulnerability by disabling this option.

This can be done by issuing the no threat-detection scanning-threat shun command. The threat-detection scanning-threat command can be used afterwards to configure the feature without the shun option.

To verify that the shun option has been correctly removed, issue the show running-config threat-detection scanning-threat command and confirm that the returned output does not show the shun option. The following example shows a Cisco ASA configured with the threat-detection scanning-threat feature without the shun option enabled:

ciscoasa# show running-config threat-detection scanning-threat
threat-detection scanning-threat 

Cisco ASA Syslog Message 305006 Denial of Service Vulnerability

A possible workaround is to prevent the Cisco ASA from generating the particular syslog message. This can be done by issuing the no logging message 305006 command.

To verify that the message is not being generated issue show running-configuration logging command. The following example shows the output of the command when the logging of message 305006 is disabled:

ciscoasa# show run logging
[...]
no logging message 305006
[...]

Protocol Independent Multicast Denial of Service Vulnerability

If PIM is required to be enabled, then there are no workarounds that mitigate this vulnerability. However,

if multicast routing is required but PIM is not used, PIM can be disabled on the Cisco ASA interfaces by issuing the no pim interface-level command.

The following example shows the interface Ethernet0/0 on a Cisco ASA device with PIM disabled:

interface Ethernet0/0
 nameif outside
 security-level 0
 ip address 192.168.1.1 255.255.255.0
 no pim

To verify that PIM is disabled on all interfaces, issue the show pim interface command and make sure that for all interface the PIM state is set to off. The following example shows a Cisco ASA with PIM disabled on all interfaces.

ciscoasa# show pim interface

Address Interface PIM Nbr Hello DR DR
Count Intvl Prior

192.168.1.1 outside off 0 30 1 this system
192.168.2.1      inside             off  0     30     1          this system

Obtaining Fixed Software

Cisco has released free software updates that address the vulnerabilities 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, or as set forth 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, upgrades should be obtained through the Software Center on Cisco.com at http://www.cisco.com.

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

All the vulnerabilities described in this security advisory were found during internal testing or discovered during the resolution of customer support cases.

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-20120314-asa

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 1.0 2012-Mar-14 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/web/about/security/psirt/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.
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