Cisco Security Advisory: SNMP Version 3 Authentication Vulnerabilities

2008-06-10T00:00:00
ID SECURITYVULNS:DOC:20005
Type securityvulns
Reporter Securityvulns
Modified 2008-06-10T00:00:00

Description

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1

Cisco Security Advisory: SNMP Version 3 Authentication Vulnerabilities

Document ID: 107408

Advisory ID: cisco-sa-20080610-snmpv3

http://www.cisco.com/warp/public/707/cisco-sa-20080610-snmpv3.shtml

Revision 1.0

For Public Release 2008 June 10 1600 UTC (GMT)


Summary

Multiple Cisco products contain either of two authentication vulnerabilities in the Simple Network Management Protocol version 3 (SNMPv3) feature. These vulnerabilities can be exploited when processing a malformed SNMPv3 message. These vulnerabilities could allow the disclosure of network information or may enable an attacker to perform configuration changes to vulnerable devices. The SNMP server is an optional service that is disabled by default in Cisco products. Only SNMPv3 is impacted by these vulnerabilities. Workarounds are available for mitigating the impact of the vulnerabilities described in this document.

The United States Computer Emergency Response Team (US-CERT) has assigned Vulnerability Note VU#878044 to these vulnerabilities.

Common Vulnerabilities and Exposures (CVE) identifier CVE-2008-0960 has also been assigned to these vulnerabilities.

This advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20080610-snmpv3.shtml

Affected Products

Vulnerable Products +------------------

The following Cisco products are vulnerable.

  • Cisco IOS
  • Cisco IOS-XR
  • Cisco Catalyst Operating System (CatOS)
  • Cisco NX-OS
  • Cisco Application Control Engine (ACE) Module
  • Cisco ACE Appliance
  • Cisco ACE XML Gateway
  • Cisco MDS 9000 Series Multilayer Fabric Switches

Note: The SNMP server is disabled by default. These vulnerabilities only impact devices that are configured for SNMPv3.

To determine the version of SNMP configured in Cisco IOS, CatOS and IOS-XR, log in to the device and issue the show snmp group command. The security model field indicates the version of SNMP configured. The output "usm" is the abbreviation for user-based security model and this indicates SNMPv3 is configured.

Cisco IOS
router#show snmp group
groupname: test                             security model:v3 noauth 
readview : v1default                        writeview: <no writeview specified>        
notifyview: <no notifyview specified>       
row status: active

Cisco CatOS
5500-1 (enable) show snmp group
Security Model: v3
Security Name: userv3
Group Name: groupv3
Storage Type: nonvolatile
Row Status: active

Cisco IOS-XR
RP/0/RP0/CPU0:ios#show snmp group
groupname: test                          security model:usm
readview : v1default                     writeview: -
notifyview: v1default
row status: nonVolatile

IronPort +-------

IronPort C-Series, X-Series, and M-Series appliances utilize code covered by this advisory, but are not susceptible to any security risk. IronPort C-Series, X-Series, and M-Series incorporate the libraries under the advisory to provide anonymous read-only access to system health data. There is no risk of escalated authorization privileges allowing a 3rd party to make any configuration changes to the IronPort devices. IronPort S-Series and Encryption Appliances are not affected by this advisory. This announcement has also been posted on the IronPort Support Portal, available to IronPort customers:

https://supportportal.ironport.com/irppcnctr/srvcd?u=http://secure-support.soma.ironport.com/announcement&sid=900016

Products Confirmed Not Vulnerable +--------------------------------

The following Cisco products are confirmed not vulnerable:

  • Cisco PIX Security Appliances
  • Cisco ASA Security Appliances
  • Cisco Firewall Services Module (FWSM)
  • Cisco Security Monitoring, Analysis, and Response System (MARS)
  • Cisco Network Admission Control (NAC) Appliance
  • CiscoWorks Wireless LAN Solution Engine (WLSE)

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

Details

SNMP defines a standard mechanism for remote management and monitoring of devices in an Internet Protocol (IP) network.

There are three general types of SNMP operations: "get" requests to request information, "set" requests that modify the configuration of a remote device, and "trap" messages that provide a monitoring function. SNMP requests and traps are transported over User Datagram Protocol (UDP) and are received at the assigned destination port numbers 161 and 162, respectively.

SNMPv3 provides secure access to devices by authenticating and encrypting packets over the network. RFC2574 defines the use of HMAC-MD5-96 and HMAC-SHA-96 as the possible authentication protocols for SNMPv3.

Vulnerabilities have been identified in the authentication code of multiple SNMPv3 implementations. This advisory identifies two vulnerabilities that are almost identical. Both are specifically related to malformed SNMPv3 packets that manipulate the Hash Message Authentication Code (HMAC). The two vulnerabilities may impact both Secure Hashing Algorithm-1 (SHA-1) and Message-Digest Algorithm 5 (MD5). The vulnerabilities described in this document can be successfully exploited using spoofed SNMPv3 packets.

These vulnerabilities are documented in the following Cisco Bug IDs:

  • CSCsf04754 - IOS SNMPv3 HMAC Authentication issue
  • CSCsf30109 - IOS-XR SNMPv3 HMAC Authentication issue
  • CSCsf29976 - CatOS SNMPv3 HMAC Authentication issue
  • CSCsq62662 - ACE XML Gw SNMPv3 HMAC Authentication issue
  • CSCsq60664 - ACE Appliance SNMPv3 HMAC Authentication issue
  • CSCsq60695 - ACE Module SNMPv3 HMAC Authentication issue
  • CSCsq60582 - Nexus SNMPv3 HMAC Authentication issue

Note: Although multiple software defects are listed, this advisory only identifies two vulnerabilities. Because different Cisco products require their own fixes, additional Bug IDs have been assigned.

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 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

CSCsf04754 - IOS SNMPv3 HMAC Authentication issue


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

CSCsf30109 - IOS-XR SNMPv3 HMAC Authentication issue


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

CSCsf29976 - CatOS SNMPv3 HMAC Authentication issue


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

CSCsq62662 - ACE XML Gw SNMPv3 HMAC Authentication issue


CVSS Base Score - 9.3

    Access Vector            - Network
    Access Complexity        - Medium
    Authentication           - None
    Confidentiality Impact   - Complete
    Integrity Impact         - Complete
    Availability Impact      - Complete

CVSS Temporal Score - 7.7

    Exploitability           - Functional
    Remediation Level        - Official-Fix
    Report Confidence        - Confirmed

CSCsq60664 - ACE Appliance SNMPv3 HMAC Authentication issue


CVSS Base Score - 9.3

    Access Vector            - Network
    Access Complexity        - Medium
    Authentication           - None
    Confidentiality Impact   - Complete
    Integrity Impact         - Complete
    Availability Impact      - Complete

CVSS Temporal Score - 8.4

    Exploitability           - Functional
    Remediation Level        - Workaround
    Report Confidence        - Confirmed

CSCsq60695 - ACE Module SNMPv3 HMAC Authentication issue


CVSS Base Score - 9.3

    Access Vector            - Network
    Access Complexity        - Medium
    Authentication           - None
    Confidentiality Impact   - Complete
    Integrity Impact         - Complete
    Availability Impact      - Complete

CVSS Temporal Score - 8.4

    Exploitability           - Functional
    Remediation Level        - Workaround
    Report Confidence        - Confirmed

CSCsq60582 - Nexus SNMPv3 HMAC Authentication issue


CVSS Base Score - 9.3

    Access Vector            - Network
    Access Complexity        - Medium
    Authentication           - None
    Confidentiality Impact   - Complete
    Integrity Impact         - Complete
    Availability Impact      - Complete

CVSS Temporal Score - 8.4

    Exploitability           - Functional
    Remediation Level        - Workaround
    Report Confidence        - Confirmed

Impact

Successful exploitation of these vulnerabilities could result in the disclosure of sensitive information on a device or allow an attacker to make configuration changes to a vulnerable device that is based on the SNMP configuration.

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 Cisco IOS software table (below) names a Cisco IOS release train. If a given release train is vulnerable, then the earliest possible releases that contain the fix (along with the anticipated date of availability for each, if applicable) are listed in the "First Fixed Release" column of the table. The "Recommended Release" column indicates the releases which have fixes for all the published vulnerabilities at the time of this Advisory. A device running a release in the given train that is earlier than the release in a specific column (less than the First Fixed Release) is known to be vulnerable. Cisco recommends upgrading to a release equal to or later than the release in the "Recommended Releases" column of the table.

+----------------------------------------+ | Major | Availability of Repaired | | Release | Releases | |------------+---------------------------| | Affected | First Fixed | Recommended | | 12.0-Based | Release | Release | | Releases | | | |------------+-------------+-------------| | 12.0 | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0DA | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0DB | 12.0(2)DB | 12.4(18b) | |------------+-------------+-------------| | | Vulnerable; | | | 12.0DC | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | | 12.0(28)S1 | | | | | | | 12.0S | 12.0(32)S5 | | | | | | | | 12.0(33)S | | |------------+-------------+-------------| | 12.0SC | 12.0(7)SC | | |------------+-------------+-------------| | | Vulnerable; | | | 12.0SL | first fixed | | | | in 12.0S | | |------------+-------------+-------------| | | Vulnerable; | | | 12.0SP | first fixed | | | | in 12.0S | | |------------+-------------+-------------| | | Vulnerable; | | | 12.0ST | first fixed | | | | in 12.0S | | |------------+-------------+-------------| | | Vulnerable; | | | 12.0SX | first fixed | | | | in 12.0S | | |------------+-------------+-------------| | 12.0SY | 12.0(32)SY1 | | |------------+-------------+-------------| | 12.0SZ | 12.0(30)SZ4 | | |------------+-------------+-------------| | 12.0T | 12.0(1)T | 12.4(18b) | |------------+-------------+-------------| | 12.0W | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0WC | 12.0(5)WC16 | | |------------+-------------+-------------| | 12.0WT | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0XA | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0XB | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0XC | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0XD | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0XE | 12.0(1)XE | | |------------+-------------+-------------| | 12.0XF | 12.0(2)XF1 | 12.0(2)XF | |------------+-------------+-------------| | | Vulnerable; | | | 12.0XG | first fixed | 12.4(18b) | | | in 12.2 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.0XH | first fixed | 12.4(18b) | | | in 12.2 | | |------------+-------------+-------------| | | Releases | | | | prior to | | | | 12.0(4)XI2 | | | | are | | | | vulnerable, | | | 12.0XI | release | 12.4(18b) | | | 12.0(4)XI2 | | | | and later | | | | are not | | | | vulnerable; | | | | first fixed | | | | in 12.2 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.0XJ | first fixed | 12.4(18b) | | | in 12.2 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.0XK | first fixed | 12.4(18b) | | | in 12.2 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.0XL | first fixed | 12.4(18b) | | | in 12.2 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.0XM | first fixed | 12.4(18b) | | | in 12.0T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.0XN | first fixed | 12.4(18b) | | | in 12.2 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.0XQ | first fixed | 12.4(18b) | | | in 12.0T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.0XR | first fixed | 12.4(18b) | | | in 12.2 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.0XS | first fixed | | | | in 12.1E | | |------------+-------------+-------------| | | Vulnerable; | | | 12.0XV | first fixed | 12.4(18b) | | | in 12.0T | | |------------+-------------+-------------| | 12.0XW | Not | | | | Vulnerable | | |------------+-------------+-------------| | Affected | First Fixed | Recommended | | 12.1-Based | Release | Release | | Releases | | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1 | first fixed | 12.4(18b) | | | in 12.2 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1AA | first fixed | 12.4(18b) | | | in 12.2 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1AX | first fixed | | | | in 12.2EY | | |------------+-------------+-------------| | | Vulnerable; | 12.1(22) | | 12.1AY | first fixed | EA11 | | | in 12.1EA | | |------------+-------------+-------------| | | Vulnerable; | 12.1(22) | | 12.1AZ | first fixed | EA11 | | | in 12.1EA | | |------------+-------------+-------------| | | Releases | | | | prior to | | | | 12.1(7)CX | | | | are | | | | vulnerable, | | | 12.1CX | release | 12.4(18b) | | | 12.1(7)CX | | | | and later | | | | are not | | | | vulnerable; | | | | first fixed | | | | in 12.2 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1DA | first fixed | | | | in 12.2DA | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1DB | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1DC | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | 12.1E | 12.1(1)E2 | | |------------+-------------+-------------| | 12.1EA | 12.1(22) | 12.1(22) | | | EA10 | EA11 | |------------+-------------+-------------| | 12.1EB | Vulnerable; | | | | contact TAC | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1EC | first fixed | | | | in 12.3BC | | |------------+-------------+-------------| | | | 12.2(29) | | | | SVD1; | | 12.1EO | 12.1(19)EO6 | Available | | | | on | | | | 13-JUN-2008 | |------------+-------------+-------------| | | | 12.2(25) | | | | EWA14 | | | Vulnerable; | | | 12.1EU | first fixed | 12.2(31) | | | in 12.2SG | SGA7 | | | | | | | | 12.2(44)SG | |------------+-------------+-------------| | | | 12.2(29) | | | Vulnerable; | SVD1; | | 12.1EV | first fixed | Available | | | in 12.2SV | on | | | | 13-JUN-2008 | |------------+-------------+-------------| | | | 12.2(25) | | | | EWA14 | | | Vulnerable; | | | 12.1EW | first fixed | 12.2(31) | | | in 12.2EW | SGA7 | | | | | | | | 12.2(44)SG | |------------+-------------+-------------| | | Vulnerable; | | | 12.1EX | first fixed | | | | in 12.1E | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1EY | first fixed | | | | in 12.1E | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1EZ | first fixed | | | | in 12.1E | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1GA | first fixed | 12.4(18b) | | | in 12.2 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1GB | first fixed | 12.4(18b) | | | in 12.2 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1T | first fixed | 12.4(18b) | | | in 12.2 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XA | first fixed | 12.4(18b) | | | in 12.2 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XB | first fixed | 12.4(18b) | | | in 12.2 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XC | first fixed | 12.4(18b) | | | in 12.2 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XD | first fixed | 12.4(18b) | | | in 12.2 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XE | first fixed | | | | in 12.1E | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XF | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XG | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XH | first fixed | 12.4(18b) | | | in 12.2 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XI | first fixed | 12.4(18b) | | | in 12.2 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XJ | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | 12.1XK | Not | | | | Vulnerable | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XL | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XM | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | 12.1XN | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.1XO | Not | | | | Vulnerable | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XP | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XQ | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XR | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XS | first fixed | 12.4(18b) | | | in 12.2 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XT | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XU | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XV | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XW | first fixed | 12.4(18b) | | | in 12.2 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XX | first fixed | 12.4(18b) | | | in 12.2 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XY | first fixed | 12.4(18b) | | | in 12.2 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XZ | first fixed | 12.4(18b) | | | in 12.2 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1YA | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1YB | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1YC | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1YD | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Releases | | | | prior to | | | | 12.1(5)YE6 | | | | are | | | | vulnerable, | | | 12.1YE | release | 12.4(18b) | | | 12.1(5)YE6 | | | | and later | | | | are not | | | | vulnerable; | | | | first fixed | | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1YF | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | 12.1YG | Not | | | | Vulnerable | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1YH | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1YI | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | 12.1(22) | | 12.1YJ | first fixed | EA11 | | | in 12.1EA | | |------------+-------------+-------------| | Affected | First Fixed | Recommended | | 12.2-Based | Release | Release | | Releases | | | |------------+-------------+-------------| | | 12.2(26c) | | | | | | | | 12.2(27c) | | | | | | | 12.2 | 12.2(28d) | 12.4(18b) | | | | | | | 12.2(29b) | | | | | | | | 12.2(40) | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2B | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2BC | first fixed | | | | in 12.3BC | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2BW | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2BY | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2BZ | first fixed | | | | in 12.3XI | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2CX | first fixed | | | | in 12.3BC | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2CY | first fixed | | | | in 12.3BC | | |------------+-------------+-------------| | 12.2CZ | Not | | | | Vulnerable | | |------------+-------------+-------------| | | 12.2(10)DA4 | | | 12.2DA | | | | | 12.2(12) | | | | DA11 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2DD | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2DX | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | | | 12.2(25) | | | | EWA14 | | | Vulnerable; | | | 12.2EU | first fixed | 12.2(31) | | | in 12.2SG | SGA7 | | | | | | | | 12.2(44)SG | |------------+-------------+-------------| | | | 12.2(25) | | | | EWA14 | | | 12.2(18)EW7 | | | 12.2EW | | 12.2(31) | | | 12.2(20)EW4 | SGA7 | | | | | | | | 12.2(44)SG | |------------+-------------+-------------| | | 12.2(20) | | | | EWA3 | | | | | | | | 12.2(25) | | | | EWA11 | 12.2(25) | | 12.2EWA | | EWA14 | | | 12.2(25) | | | | EWA7 | | | | | | | | 12.2(25) | | | | EWA8 | | |------------+-------------+-------------| | | | 12.2(44)EX; | | 12.2EX | 12.2(35)EX | Available | | | | on | | | | 26-JUN-2008 | |------------+-------------+-------------| | 12.2EY | 12.2(37)EY | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2EZ | first fixed | | | | in 12.2SEE | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2FX | first fixed | | | | in 12.2SEE | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2FY | first fixed | | | | in 12.2SEG | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2FZ | first fixed | 12.2(44)SE2 | | | in 12.2SE | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2IXA | migrate to | | | | any release | | | | in 12.2IXD | | |------------+-------------+-------------| | 12.2IXB | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2IXC | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2IXD | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2IXE | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2IXF | Not | | | | Vulnerable | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2JA | first fixed | | | | in 12.3JA | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2JK | first fixed | 12.4(15)T5 | | | in 12.4T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2MB | first fixed | | | | in 12.2SW | | |------------+-------------+-------------| | 12.2MC | 12.2(15) | 12.4(18b) | | | MC2h | | |------------+-------------+-------------| | | 12.2(14)S18 | | | | | 12.2(31) | | | 12.2(18)S13 | SB12 | | 12.2S | | | | | 12.2(20)S13 | 12.2(33) | | | | SRC1 | | | 12.2(25)S11 | | |------------+-------------+-------------| | | 12.2(28)SB4 | | | | | | | 12.2SB | 12.2(31)SB2 | 12.2(31) | | | | SB12 | | | 12.2(31) | | | | SB3x | | |------------+-------------+-------------| | | Vulnerable; | 12.2(31) | | 12.2SBC | first fixed | SB12 | | | in 12.2SB | | |------------+-------------+-------------| | 12.2SCA | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SE | 12.2(35)SE | 12.2(44)SE2 | |------------+-------------+-------------| | | Vulnerable; | | | 12.2SEA | first fixed | | | | in 12.2SEE | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2SEB | first fixed | | | | in 12.2SEE | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2SEC | first fixed | | | | in 12.2SEE | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2SED | first fixed | | | | in 12.2SEE | | |------------+-------------+-------------| | 12.2SEE | 12.2(25) | | | | SEE3 | | |------------+-------------+-------------| | 12.2SEF | 12.2(25) | 12.2(44)SE2 | | | SEF2 | | |------------+-------------+-------------| | 12.2SEG | 12.2(25) | | | | SEG2 | | |------------+-------------+-------------| | | 12.2(25)SG1 | | | | | | | | 12.2(31)SG1 | | | 12.2SG | | 12.2(44)SG | | | 12.2(31)SG2 | | | | | | | | 12.2(37)SG | | |------------+-------------+-------------| | 12.2SGA | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SL | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SM | 12.2(29)SM2 | 12.2(29)SM3 | |------------+-------------+-------------| | | | 12.2(29) | | | | SVD1; | | 12.2SO | 12.2(18)SO7 | Available | | | | on | | | | 13-JUN-2008 | |------------+-------------+-------------| | 12.2SRA | 12.2(33) | | | | SRA1 | | |------------+-------------+-------------| | 12.2SRB | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SRC | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SU | Not | | | | Vulnerable | | |------------+-------------+-------------| | | 12.2(27)SV5 | | | | | | | | 12.2(28)SV1 | 12.2(29) | | | | SVD1; | | 12.2SV | 12.2(29)SV3 | Available | | | | on | | | 12.2(29a) | 13-JUN-2008 | | | SV1 | | | | | | | | 12.2(29b)SV | | |------------+-------------+-------------| | 12.2SVA | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SVC | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SVD | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SW | 12.2(25)SW8 | | |------------+-------------+-------------| | | | 12.2(18) | | | Vulnerable; | SXF15; | | 12.2SX | first fixed | Available | | | in 12.2SXF | on | | | | 08-AUG-2008 | |------------+-------------+-------------| | | | 12.2(18) | | | Vulnerable; | SXF15; | | 12.2SXA | first fixed | Available | | | in 12.2SXF | on | | | | 08-AUG-2008 | |------------+-------------+-------------| | | | 12.2(18) | | | Vulnerable; | SXF15; | | 12.2SXB | first fixed | Available | | | in 12.2SXF | on | | | | 08-AUG-2008 | |------------+-------------+-------------| | | | 12.2(18) | | | 12.2(18) | SXF15; | | 12.2SXD | SXD7a | Available | | | | on | | | | 08-AUG-2008 | |------------+-------------+-------------| | | | 12.2(18) | | | 12.2(18) | SXF15; | | 12.2SXE | SXE6a | Available | | | | on | | | | 08-AUG-2008 | |------------+-------------+-------------| | | 12.2(18) | | | | SXF10a | 12.2(18) | | | | SXF15; | | 12.2SXF | 12.2(18) | Available | | | SXF12a | on | | | | 08-AUG-2008 | | | 12.2(18) | | | | SXF6 | | |------------+-------------+-------------| | 12.2SXH | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SY | Not | | | | Vulnerable | | |------------+-------------+-------------| | | | 12.2(31) | | | Vulnerable; | SB12 | | 12.2SZ | first fixed | | | | in 12.2S | 12.2(33) | | | | SRC1 | |------------+-------------+-------------| | | Vulnerable; | | | 12.2T | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | 12.2TPC | 12.2(8) | | | | TPC10b | | |------------+-------------+-------------| | | Vulnerable; | 12.2(31) | | 12.2UZ | first fixed | SB12 | | | in 12.2SB | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XA | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XB | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XC | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XD | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XE | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XF | first fixed | | | | in 12.3BC | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XG | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XH | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XI | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XJ | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XK | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XL | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XM | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | 12.2XN | 12.2(33)XN1 | 12.4(18b) | |------------+-------------+-------------| | 12.2XNA | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2XO | Not | | | | Vulnerable | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XQ | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XR | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XS | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XT | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XU | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XV | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XW | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | 12.2YA | 12.2(4)YA12 | 12.4(18b) | |------------+-------------+-------------| | | Vulnerable; | | | 12.2YB | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2YC | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2YD | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | 12.2YE | Not | | | | Vulnerable | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2YF | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2YG | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2YH | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2YJ | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2YK | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2YL | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2YM | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2YN | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | | Vulnerable; | 12.2(18) | | | migrate to | SXF15; | | 12.2YO | any release | Available | | | in 12.2SY | on | | | | 08-AUG-2008 | |------------+-------------+-------------| | | Vulnerable; | | | 12.2YP | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2YQ | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2YR | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2YS | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2YT | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2YU | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2YV | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2YW | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | 12.2YX | Not | | | | Vulnerable | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2YY | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | | | 12.2(31) | | | Vulnerable; | SB12 | | 12.2YZ | first fixed | | | | in 12.2S | 12.2(33) | | | | SRC1 | |------------+-------------+-------------| | | | 12.2(18) | | | Vulnerable; | SXF15; | | 12.2ZA | first fixed | Available | | | in 12.2SXF | on | | | | 08-AUG-2008 | |------------+-------------+-------------| | | Vulnerable; | | | 12.2ZB | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2ZC | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | 12.2ZD | Vulnerable; | | | | contact TAC | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2ZE | first fixed | 12.4(18b) | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2ZF | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | | | 12.3(2)XA7 | | | Vulnerable; | | | 12.2ZG | first fixed | 12.4(15)T5 | | | in 12.3YG | | | | | 12.4(18b) | |------------+-------------+-------------| | 12.2ZH | 12.2(13)ZH9 | 12.2(13) | | | | ZH11 | |------------+-------------+-------------| | | Vulnerable; | | | 12.2ZJ | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | | Vulnerable; | 12.4(15)T5 | | 12.2ZL | first fixed | | | | in 12.3T | 12.4(18b) | |------------+-------------+-------------| | | Vulnerable; | | | 12.2ZP | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | | | 12.2(33) | | | | SXH3; | | 12.2ZU | 12.2(18)ZU1 | Available | | | | on | | | | 03-JUL-2008 | |------------+-------------+-------------| | 12.2ZY | Not | | | | Vulnerable | | |------------+-------------+-------------| | Affected | First Fixed | Recommended | | 12.3-Based | Release | Release | | Releases | | | |------------+-------------+-------------| | | 12.3(17c) | | | | | | | | 12.3(18a) | | | | | | | 12.3 | 12.3(19a) | 12.4(18b) | | | | | | | 12.3(20a) | | | | | | | | 12.3(21) | | |------------+-------------+-------------| | | Vulnerable; | | | 12.3B | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | | 12.3(17b) | | | 12.3BC | BC3 | | | | | | | | 12.3(21)BC | | |------------+-------------+-------------| | | Vulnerable; | | | 12.3BW | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | 12.3EU | Not | | | | Vulnerable | | |------------+-------------+-------------| | | 12.3(11)JA | | | | | | | | 12.3(7)JA5 | | | 12.3JA | | | | | 12.3(8)JA3; | | | | Available | | | | on | | | | 18-SEP-2008 | | |------------+-------------+-------------| | 12.3JEA | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.3JEB | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.3JEC | Not | | | | Vulnerable | | |------------+-------------+-------------| | | | 12.3(2)JK4; | | | | Available | | | | on | | | 12.3(2)JK2 | 30-JUN-2008 | | 12.3JK | | | | | 12.3(8)JK1 | 12.3(8)JK2; | | | | Available | | | | on | | | | 30-JUN-2008 | |------------+-------------+-------------| | 12.3JL | 12.3(2)JL1 | 12.3(2)JL4 | |------------+-------------+-------------| | 12.3JX | Vulnerable; | 12.3(7)JX11 | | | contact TAC | | |------------+-------------+-------------| | 12.3T | 12.3(11)T11 | 12.4(18b) | |------------+-------------+-------------| | 12.3TPC | 12.3(4) | | | | TPC11b | | |------------+-------------+-------------| | 12.3VA | Vulnerable; | | | | contact TAC | | |------------+-------------+-------------| | 12.3XA | 12.3(2)XA6 | 12.3(2)XA7 | |------------+-------------+-------------| | | Vulnerable; | | | 12.3XB | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | | | 12.4(15)T5 | | 12.3XC | 12.3(2)XC5 | | | | | 12.4(18b) | |------------+-------------+-------------| | | Vulnerable; | | | 12.3XD | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | | | 12.4(15)T5 | | 12.3XE | 12.3(2)XE5 | | | | | 12.4(18b) | |------------+-------------+-------------| | | Vulnerable; | | | 12.3XF | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | | Vulnerable; | 12.4(15)T5 | | 12.3XG | first fixed | | | | in 12.3YG | 12.4(18b) | |------------+-------------+-------------| | | Vulnerable; | | | 12.3XH | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | 12.3XI | 12.3(7)XI8a | | |------------+-------------+-------------| | | Vulnerable; | 12.3(14) | | 12.3XJ | first fixed | YX11 | | | in 12.3YX | | | | | 12.4(15)T5 | |------------+-------------+-------------| | | Vulnerable; | | | 12.3XK | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.3XQ | first fixed | 12.4(18b) | | | in 12.4 | | |------------+-------------+-------------| | | | 12.4(15)T5 | | 12.3XR | 12.3(7)XR7 | | | | | 12.4(18b) | |------------+-------------+-------------| | | Vulnerable; | | | 12.3XS | first fixed | 12.4(18b) | | | in 12.4 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.3XU | first fixed | 12.4(15)T5 | | | in 12.4T | | |------------+-------------+-------------| | | Vulnerable; | 12.3(14) | | 12.3XW | first fixed | YX11 | | | in 12.3YX | | | | | 12.4(15)T5 | |------------+-------------+-------------| | | Vulnerable; | | | 12.3XY | first fixed | 12.4(18b) | | | in 12.3T | | |------------+-------------+-------------| | | Vulnerable; | 12.4(15)T5 | | 12.3YA | first fixed | | | | in 12.4 | 12.4(18b) | |------------+-------------+-------------| | | Vulnerable; | | | 12.3YD | first fixed | 12.4(15)T5 | | | in 12.4T | | |------------+-------------+-------------| | | Vulnerable; | 12.3(14) | | 12.3YF | first fixed | YX11 | | | in 12.3YX | | | | | 12.4(15)T5 | |------------+-------------+-------------| | 12.3YG | 12.3(8)YG6 | 12.4(15)T5 | |------------+-------------+-------------| | | Vulnerable; | | | 12.3YH | first fixed | 12.4(15)T5 | | | in 12.4T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.3YI | first fixed | 12.4(15)T5 | | | in 12.4T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.3YJ | first fixed | 12.4(15)T5 | | | in 12.4T | | |------------+-------------+-------------| | 12.3YK | 12.3(11)YK3 | 12.4(15)T5 | |------------+-------------+-------------| | 12.3YM | 12.3(14)YM8 | 12.3(14) | | | | YM12 | |------------+-------------+-------------| | | Vulnerable; | | | 12.3YQ | first fixed | 12.4(15)T5 | | | in 12.4T | | |------------+-------------+-------------| | 12.3YS | 12.3(11)YS2 | 12.4(15)T5 | |------------+-------------+-------------| | | Vulnerable; | | | 12.3YT | first fixed | 12.4(15)T5 | | | in 12.4T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.3YU | first fixed | | | | in 12.4XB | | |------------+-------------+-------------| | 12.3YX | 12.3(14)YX4 | 12.3(14) | | | | YX11 | |------------+-------------+-------------| | 12.3YZ | 12.3(11)YZ2 | | |------------+-------------+-------------| | Affected | First Fixed | Recommended | | 12.4-Based | Release | Release | | Releases | | | |------------+-------------+-------------| | | 12.4(10) | | | | | | | | 12.4(3f) | | | | | | | 12.4 | 12.4(5c) | 12.4(18b) | | | | | | | 12.4(7c) | | | | | | | | 12.4(8b) | | |------------+-------------+-------------| | 12.4JA | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.4JK | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.4JMA | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.4JMB | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.4JMC | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.4JX | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.4MD | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.4MR | 12.4(9)MR | | |------------+-------------+-------------| | 12.4SW | Not | | | | Vulnerable | | |------------+-------------+-------------| | | 12.4(11)T | | | | | | | | 12.4(2)T6 | | | | | | | 12.4T | 12.4(4)T5 | 12.4(15)T5 | | | | | | | 12.4(6)T4 | | | | | | | | 12.4(9)T1 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.4XA | first fixed | 12.4(15)T5 | | | in 12.4T | | |------------+-------------+-------------| | 12.4XB | 12.4(2)XB3 | | |------------+-------------+-------------| | 12.4XC | 12.4(4)XC5 | | |------------+-------------+-------------| | 12.4XD | 12.4(4)XD4 | 12.4(15)T5 | |------------+-------------+-------------| | 12.4XE | 12.4(6)XE2 | 12.4(15)T5 | |------------+-------------+-------------| | 12.4XF | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.4XG | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.4XJ | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.4XK | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.4XL | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.4XM | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.4XN | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.4XQ | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.4XT | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.4XV | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.4XW | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.4XY | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.4XZ | Not | | | | Vulnerable | | +----------------------------------------+

Cisco CatOS +----------

The following table lists fixed Cisco Catalyst Operating System (CatOS) software.

+---------------------------------------+ | Affected | Affected | First | | Product | Release | Fixed | | | | Release | |-----------------+----------+----------| | | 6.x | 6.4(23) | | |----------+----------| | Cisco Catalyst | 7.x | 7.6(19) | |Operating |----------+----------| | System (CatOS) | 8.5.x | 8.5(7) | | |----------+----------| | | 8.6.x | 8.6(1) | +---------------------------------------+

Cisco IOS XR +-----------

The following table lists fixed Cisco IOS XR software.

+---------------------------------------------------+ | Cisco | | | | IOS XR | SMU ID | SMU Name | | Version | | | |---------+------------+----------------------------| | 3.2.2 | AA01681 | hfr-base-3.2.2.CSCsf30109 | |---------+------------+----------------------------| | 3.2.3 | AA01682 | hfr-base-3.2.3.CSCsf30109 | |---------+------------+----------------------------| | 3.2.4 | AA01683 | hfr-base-3.2.4.CSCsf30109 | |---------+------------+----------------------------| | 3.2.6 | AA01684 | hfr-base-3.2.6.CSCsf30109 | |---------+------------+----------------------------| | 3.3.0 | AA01685 | hfr-base-3.3.0.CSCsf30109 | |---------+------------+----------------------------| | 3.3.0 | AA01690 | c12k-base-3.3.0.CSCsf30109 | |---------+------------+----------------------------| | 3.3.1 | AA01686 | hfr-base-3.3.1.CSCsf30109 | |---------+------------+----------------------------| | 3.3.1 | AA01688 | c12k-base-3.3.1.CSCsf30109 | |---------+------------+----------------------------| | 3.3.2 | Not | Not vulnerable | | | vulnerable | | |---------+------------+----------------------------| | 3.4.x | Not | Not vulnerable | | | vulnerable | | +---------------------------------------------------+

Cisco NX-OS +----------

The following table lists fixed Cisco NX-OS software.

+----------------------------------------+ | Affected | Affected | First Fixed | | Product | Release | Release | |-----------+-----------+----------------| | Cisco | | 4.0.(2) | | NX-OS | 4.0.(1)a | Available June | | | | 2008 | +----------------------------------------+

Cisco ACE Products +-----------------

The following table lists fixed Cisco Application Control Engine (ACE) software.

+---------------------------------------+ | Affected | Affected | First | | Product | Release | Fixed | | | | Release | |----------------+----------+-----------| | | 3.0(0)A1 | | | Cisco | (6.x) | | | Application | | A2(1.1) | | Control Engine | A2(1.0) | | | (ACE) Module | | | | | A2(1.0a) | | |----------------+----------+-----------| | | A1(7.0) | | | | | | | Cisco | A1(7.0a) | | | Application | | | | Control Engine | A1(7.0b) | A1(8.0a) | | (ACE) | | | | Appliance | A1(7.0c) | | | | | | | | A1(8.0) | | |----------------+----------+-----------| | Cisco | 4.x | | | Application | | 6.0.1 | | Control Engine | 5.x | Available | | (ACE) XML | | June 2008 | | Gateway | 6.0 | | +---------------------------------------+

Cisco MDS software +-----------------

The following table lists fixed Cisco MDS Multilayer Switch software.

+---------------------------------------+ | Affected | Affected | First Fixed | | Product | Release | Release | |-----------+-----------+---------------| | | 2.1 | | | Cisco MDS | | 3.4.1 | | 9000 | 3.0 | Available | | | | June 2008 | | | 3.2 | | +---------------------------------------+

Workarounds

The following workarounds have been identified for these vulnerabilities.

Infrastructure Access Control Lists +----------------------------------

Although it is often difficult to block traffic that transits a network, it is possible to identify traffic that should never be allowed to target infrastructure devices and block that traffic at the border of networks. Infrastructure Access Control Lists (iACLs) are a network security best practice and should be considered as a long-term addition to good network security as well as a workaround for these specific vulnerabilities. The iACL example below should be included as part of the deployed infrastructure access-list which will protect all devices with IP addresses in the infrastructure IP address range:

Note: UDP port 161 is applicable for all versions of SNMP.

!--- Permit SNMP UDP 161 packets from
!--- trusted hosts destined to infrastructure addresses.

access-list 150 permit udp TRUSTED_HOSTS MASK INFRASTRUCTURE_ADDRESSES MASK eq 161

!--- Deny SNMP UDP 161 packets from all
!--- other sources destined to infrastructure addresses.

access-list 150 deny udp any INFRASTRUCTURE_ADDRESSES MASK eq 161

!--- Permit/deny all other Layer 3 and Layer 4 traffic in accordance
!--- with existing security policies and configurations
!--- Permit all other traffic to transit the device.

access-list 150 permit ip any anyinterface serial 2/0ip access-group 150 in

The white paper entitled "Protecting Your Core: Infrastructure Protection Access Control Lists" presents guidelines and recommended deployment techniques for infrastructure protection access lists. This white paper can be obtained at the following link: http://www.cisco.com/en/US/tech/tk648/tk361/technologies_white_paper09186a00801a1a55.shtml

Control Plane Policing +---------------------

Control Plane Policing (CoPP) can be used to block untrusted SNMP access to the device. Cisco IOS software releases 12.0S, 12.2SX, 12.2S, 12.3T, 12.4, and 12.4T support the CoPP feature. CoPP can be configured on a device to protect the management and control planes and minimize the risk and effectiveness of direct infrastructure attacks by explicitly permitting only authorized traffic that is sent to infrastructure devices in accordance with existing security policies and configurations. The following example, which uses 192.168.100.1 to represent a trusted host, can be adapted to your network.

!--- Deny SNMP UDP traffic from trusted hosts to all IP addresses
!--- configured on all interfaces of the affected device so that

!--- it will be allowed by the CoPP feature


access-list 111 deny udp host 192.168.100.1 any eq 161


!--- Permit all other SNMP UDP traffic sent to all IP addresses
!--- configured on all interfaces of the affected device so that it
!--- will be policed and dropped by the CoPP feature


access-list 111 permit udp any any eq 161


!--- Permit (Police or Drop)/Deny (Allow) all other Layer3 and Layer4
!--- traffic in accordance with existing security policies and
!--- configurations for traffic that is authorized to be sent
!--- to infrastructure devices

!--- Create a Class-Map for traffic to be policed by
!--- the CoPP feature


class-map match-all drop-snmpv3-class
match access-group 111


!--- Create a Policy-Map that will be applied to the
!--- Control-Plane of the device.


policy-map drop-snmpv3-traffic
class drop-snmpv3-class
drop


!--- Apply the Policy-Map to the 
!--- Control-Plane of the device


control-plane
service-policy input drop-snmpv3-traffic

In the above CoPP example, the access control list entries (ACEs) that match the potential exploit packets with the "permit" action result in these packets being discarded by the policy-map "drop" function, while packets that match the "deny" action (not shown) are not affected by the policy-map drop function.

Please note that the policy-map syntax is different in the 12.2S and 12.0S Cisco IOS trains:

policy-map drop-snmpv3-traffic
class drop-snmpv3-class
police 32000 1500 1500 conform-action drop exceed-action drop

Additional information on the configuration and use of the CoPP feature is available at the following links:

http://www.cisco.com/en/US/prod/collateral/iosswrel/ps6537/ps6586/ps6642/prod_white_paper0900aecd804fa16a.html

and

http://www.cisco.com/en/US/docs/ios/12_3t/12_3t4/feature/guide/gtrtlimt.html

Transit Access Control Lists +---------------------------

Filters that deny SNMP packets using UDP port 161 should be deployed throughout the network as part of a Transit Access Control List (tACL) policy for protection of traffic that enters the network at ingress access points. This policy should be configured to protect the network device where the filter is applied and other devices behind it. Filters for SNMP packets that use UDP port 161 should also be deployed in front of vulnerable network devices so that traffic is only allowed from trusted clients.

Additional information about tACLs is available in "Transit Access Control Lists: Filtering at Your Edge:"

http://www.cisco.com/en/US/tech/tk648/tk361/technologies_white_paper09186a00801afc76.shtml

Hardening Guide Statement +------------------------

Customers are advised to review the "Fortifying the Simple Network Management Protocol" section of the "Cisco Guide to Harden Cisco IOS Devices" for information on configuring an IOS device for SNMPv3 authentication and privacy:

http://www.cisco.com/en/US/tech/tk648/tk361/technologies_tech_note09186a0080120f48.shtml#fortify

Cisco IOS authPriv Configuration +-------------------------------

Enabling the SNMPv3 privacy subsystem (if it is not already in use) is a short-term workaround for users who are unable to upgrade in a timely fashion. This subsystem is used to encrypt SNMPv3 traffic using a shared secret.

In Cisco IOS, administrators can enable this workaround by using the authPriv SNMPv3 feature. Only Cisco IOS crypto images can run the authPriv feature.

Note: Ensure that the management application supports SNMPv3 authPriv before implementing this feature.

Applied Mitigation Bulletin +--------------------------

Additional mitigation techniques that can be deployed on Cisco devices within the network are available in the Cisco Applied Intelligence companion document for this advisory: http://www.cisco.com/warp/public/707/cisco-amb-20080610-SNMPv3.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/products/prod_warranties_item09186a008088e31f.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/warp/public/687/Directory/DirTAC.shtml for additional TAC contact information, including localized telephone numbers, and instructions and e-mail addresses for use in various languages.

Exploitation and Public Announcements

Cisco is releasing this combined Cisco IOS and non-IOS product advisory out of our normal bi-yearly IOS security advisory cycle due to public disclosure of these vulnerabilities.

Cisco is not aware of any malicious exploitation of these vulnerabilities.

These vulnerabilities were reported to Cisco by Dr. Tom Dunigan of the University of Tennessee and Net-SNMP in cooperation with the CERT Coordination Center.

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-20080610-snmpv3.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-teams@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 | | Initial | | 1.0 | 2008-June-10 | 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.


Updated: Jun 10, 2008 Document ID: 107408


-----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (Darwin)

iD8DBQFITruJ86n/Gc8U/uARAiuNAJwIq42/p8CUh7Dc88nAn9a1pfhhqgCfWXjv 8bYhCD0EKNQ28koObq4S+vQ= =zOBL -----END PGP SIGNATURE-----