SNMP Version 3 Authentication Vulnerabilities

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.

  Note: SNMP versions 1, 2 and 2c are not impacted by these vulnerabilities.

  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://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20080610-snmpv3.

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
  • Cisco Wireless LAN Controller (WLC)
  • Cisco Application and Content Networking System (ACNS)
  • Cisco Wide Area Application Services (WAAS)
  • Cisco MGX 8830, 8850 and 8880 Media Gateway and Switch
  • Cisco Internet Streamer CDS
  • Cisco 8472DVB Set Top Box
  • Cisco 8485DVB Set Top Box

  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 auth 
  readview : v1default                        writeview:         
  notifyview:        
  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)
  • Cisco BTS 10200 Softswitch
  • Cisco Content Services Gateway
  • Cisco Network Registrar
  • Cisco Access Registrar
  • Cisco PSTN Gateway (PGW2200)

  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 (registered customers only)
  • CSCsf30109 - IOS-XR SNMPv3 HMAC Authentication issue (registered customers only)
  • CSCsf29976 - CatOS SNMPv3 HMAC Authentication issue (registered customers only)
  • CSCsq62662 - ACE XML Gw SNMPv3 HMAC Authentication issue (registered customers only)
  • CSCsq60664 - ACE Appliance SNMPv3 HMAC Authentication issue (registered customers only)
  • CSCsq60695 - ACE Module SNMPv3 HMAC Authentication issue (registered customers only)
  • CSCsq60582 - Nexus SNMPv3 HMAC Authentication issue (registered customers only)
  • CSCsq77604 - WLC SNMPv3 HMAC Authentication issue (registered customers only)
  • CSCsv79388 - ACNS SNMPv3 HMAC Authentication issue (registered customers only)
  • CSCsv82725 - WAAS SNMPv3 HMAC Authentication issue (registered customers only)
  • CSCte57592 - MGX SNMPv3 HMAC Authentication issue (registered customers only)
  • CSCti05966 - Cisco Internet Streamer CDS SNMPv3 HMAC Authentication issue (registered customers only)
  • CSCub72133 - Cisco 8472DVB Set Top Box SNMPv3 HMAC Authentication issue (registered customers only)
  • CSCub72121- Cisco 8485DVB Set Top Box SNMPv3 HMAC Authentication issue (registered customers only)

  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.

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 any
  
  !--- Apply iACL to relevant interfaces
  
  interface serial 2/0
  ip 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 and SAN-OS 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.

  In Cisco SAN-OS, administrators can enable this workaround by using the snmp-server globalEnforcePriv configuration command.

  Additional information about the Cisco SAN-OS globalEnforcePriv command is available in the "Cisco MDS 9000 Family CLI Configuration Guide:" http://www.cisco.com/en/US/docs/storage/san_switches/mds9000/sw/rel_3_x/configuration/guides/cli_3_3_1/snmp.html#wp1352055

  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://tools.cisco.com/security/center/content/CiscoAppliedMitigationBulletin/cisco-amb-20080610-SNMPv3

Fixed Software

• 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 Release	Availability of Repaired Releases
  Affected 12.0-Based Releases	First Fixed Release	Recommended Release
  12.0	Not Vulnerable
  12.0DA	Not Vulnerable
  12.0DB	12.0(2)DB	12.4(18b)
  12.0DC	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.0S	12.0(28)S1 12.0(32)S5 12.0(33)S
  12.0SC	12.0(7)SC
  12.0SL	Vulnerable; first fixed in 12.0S
  12.0SP	Vulnerable; first fixed in 12.0S
  12.0ST	Vulnerable; first fixed in 12.0S
  12.0SX	Vulnerable; 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
  12.0XG	Vulnerable; first fixed in 12.2	12.4(18b)
  12.0XH	Vulnerable; first fixed in 12.2	12.4(18b)
  12.0XI	Releases prior to 12.0(4)XI2 are vulnerable, release 12.0(4)XI2 and later are not vulnerable; first fixed in 12.2	12.4(18b)
  12.0XJ	Vulnerable; first fixed in 12.2	12.4(18b)
  12.0XK	Vulnerable; first fixed in 12.2	12.4(18b)
  12.0XL	Vulnerable; first fixed in 12.2	12.4(18b)
  12.0XM	Vulnerable; first fixed in 12.0T	12.4(18b)
  12.0XN	Vulnerable; first fixed in 12.2	12.4(18b)
  12.0XQ	Vulnerable; first fixed in 12.0T	12.4(18b)
  12.0XR	Vulnerable; first fixed in 12.2	12.4(18b)
  12.0XS	Vulnerable; first fixed in 12.1E
  12.0XV	Vulnerable; first fixed in 12.0T	12.4(18b)
  12.0XW	Not Vulnerable
  Affected 12.1-Based Releases	First Fixed Release	Recommended Release
  12.1	Vulnerable; first fixed in 12.2	12.4(18b)
  12.1AA	Vulnerable; first fixed in 12.2	12.4(18b)
  12.1AX	Vulnerable; first fixed in 12.2EY
  12.1AY	Vulnerable; first fixed in 12.1EA	12.1(22)EA11
  12.1AZ	Vulnerable; first fixed in 12.1EA	12.1(22)EA11
  12.1CX	Releases prior to 12.1(7)CX are vulnerable, release 12.1(7)CX and later are not vulnerable; first fixed in 12.2	12.4(18b)
  12.1DA	Vulnerable; first fixed in 12.2DA
  12.1DB	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.1DC	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.1E	12.1(1)E2
  12.1EA	12.1(22)EA10	12.1(22)EA11
  12.1EB	Vulnerable; contact TAC
  12.1EC	Vulnerable; first fixed in 12.3BC
  12.1EO	12.1(19)EO6	12.2(29)SVD1; Available on 13-JUN-2008
  12.1EU	Vulnerable; first fixed in 12.2SG	12.2(25)EWA14 12.2(31)SGA7 12.2(44)SG
  12.1EV	Vulnerable; first fixed in 12.2SV	12.2(29)SVD1; Available on 13-JUN-2008
  12.1EW	Vulnerable; first fixed in 12.2EW	12.2(25)EWA14 12.2(31)SGA7 12.2(44)SG
  12.1EX	Vulnerable; first fixed in 12.1E
  12.1EY	Vulnerable; first fixed in 12.1E
  12.1EZ	Vulnerable; first fixed in 12.1E
  12.1GA	Vulnerable; first fixed in 12.2	12.4(18b)
  12.1GB	Vulnerable; first fixed in 12.2	12.4(18b)
  12.1T	Vulnerable; first fixed in 12.2	12.4(18b)
  12.1XA	Vulnerable; first fixed in 12.2	12.4(18b)
  12.1XB	Vulnerable; first fixed in 12.2	12.4(18b)
  12.1XC	Vulnerable; first fixed in 12.2	12.4(18b)
  12.1XD	Vulnerable; first fixed in 12.2	12.4(18b)
  12.1XE	Vulnerable; first fixed in 12.1E
  12.1XF	Vulnerable; first fixed in 12.3	12.4(18b)
  12.1XG	Vulnerable; first fixed in 12.3	12.4(18b)
  12.1XH	Vulnerable; first fixed in 12.2	12.4(18b)
  12.1XI	Vulnerable; first fixed in 12.2	12.4(18b)
  12.1XJ	Vulnerable; first fixed in 12.3	12.4(18b)
  12.1XK	Not Vulnerable
  12.1XL	Vulnerable; first fixed in 12.3	12.4(18b)
  12.1XM	Vulnerable; first fixed in 12.3	12.4(18b)
  12.1XN	Not Vulnerable
  12.1XO	Not Vulnerable
  12.1XP	Vulnerable; first fixed in 12.3	12.4(18b)
  12.1XQ	Vulnerable; first fixed in 12.3	12.4(18b)
  12.1XR	Vulnerable; first fixed in 12.3	12.4(18b)
  12.1XS	Vulnerable; first fixed in 12.2	12.4(18b)
  12.1XT	Vulnerable; first fixed in 12.3	12.4(18b)
  12.1XU	Vulnerable; first fixed in 12.3	12.4(18b)
  12.1XV	Vulnerable; first fixed in 12.3	12.4(18b)
  12.1XW	Vulnerable; first fixed in 12.2	12.4(18b)
  12.1XX	Vulnerable; first fixed in 12.2	12.4(18b)
  12.1XY	Vulnerable; first fixed in 12.2	12.4(18b)
  12.1XZ	Vulnerable; first fixed in 12.2	12.4(18b)
  12.1YA	Vulnerable; first fixed in 12.3	12.4(18b)
  12.1YB	Vulnerable; first fixed in 12.3	12.4(18b)
  12.1YC	Vulnerable; first fixed in 12.3	12.4(18b)
  12.1YD	Vulnerable; first fixed in 12.3	12.4(18b)
  12.1YE	Releases prior to 12.1(5)YE6 are vulnerable, release 12.1(5)YE6 and later are not vulnerable; first fixed in 12.3	12.4(18b)
  12.1YF	Vulnerable; first fixed in 12.3	12.4(18b)
  12.1YG	Not Vulnerable
  12.1YH	Vulnerable; first fixed in 12.3	12.4(18b)
  12.1YI	Vulnerable; first fixed in 12.3	12.4(18b)
  12.1YJ	Vulnerable; first fixed in 12.1EA	12.1(22)EA11
  Affected 12.2-Based Releases	First Fixed Release	Recommended Release
  12.2	12.2(26c)12.2(27c)12.2(28d)12.2(29b)12.2(40)	12.4(18b)
  12.2B	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.2BC	Vulnerable; first fixed in 12.3BC
  12.2BW	Vulnerable; first fixed in 12.3	12.4(18b)
  12.2BY	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.2BZ	Vulnerable; first fixed in 12.3XI
  12.2CX	Vulnerable; first fixed in 12.3BC
  12.2CY	Vulnerable; first fixed in 12.3BC
  12.2CZ	Not Vulnerable
  12.2DA	12.2(10)DA4 12.2(12)DA11
  12.2DD	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.2DX	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.2EU	Vulnerable; first fixed in 12.2SG	12.2(25)EWA14 12.2(31)SGA7 12.2(44)SG
  12.2EW	12.2(18)EW712.2(20)EW4	12.2(25)EWA14 12.2(31)SGA7 12.2(44)SG
  12.2EWA	12.2(20)EWA312.2(25)EWA1112.2(25)EWA712.2(25)EWA8	12.2(25)EWA14
  12.2EX	12.2(35)EX	12.2(44)EX; Available on 26-JUN-2008
  12.2EY	12.2(37)EY
  12.2EZ	Vulnerable; first fixed in 12.2SEE
  12.2FX	Vulnerable; first fixed in 12.2SEE
  12.2FY	Vulnerable; first fixed in 12.2SEG
  12.2FZ	Vulnerable; first fixed in 12.2SE	12.2(44)SE2
  12.2IXA	Vulnerable; 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
  12.2JA	Vulnerable; first fixed in 12.3JA
  12.2JK	Vulnerable; first fixed in 12.4T	12.4(15)T5
  12.2MB	Vulnerable; first fixed in 12.2SW
  12.2MC	12.2(15)MC2h	12.4(18b)
  12.2S	12.2(14)S1812.2(18)S1312.2(20)S1312.2(25)S11	12.2(31)SB12 12.2(33)SRC1
  12.2SB	12.2(28)SB412.2(31)SB212.2(31)SB3x	12.2(31)SB12
  12.2SBC	Vulnerable; first fixed in 12.2SB	12.2(31)SB12
  12.2SCA	Not Vulnerable
  12.2SE	12.2(35)SE	12.2(44)SE2
  12.2SEA	Vulnerable; first fixed in 12.2SEE
  12.2SEB	Vulnerable; first fixed in 12.2SEE
  12.2SEC	Vulnerable; first fixed in 12.2SEE
  12.2SED	Vulnerable; first fixed in 12.2SEE
  12.2SEE	12.2(25)SEE3
  12.2SEF	12.2(25)SEF2	12.2(44)SE2
  12.2SEG	12.2(25)SEG2
  12.2SG	12.2(25)SG1 12.2(31)SG1 12.2(31)SG2 12.2(37)SG	12.2(44)SG
  12.2SGA	Not Vulnerable
  12.2SL	Not Vulnerable
  12.2SM	12.2(29)SM2	12.2(29)SM3
  12.2SO	12.2(18)SO7	12.2(29)SVD1; Available on 13-JUN-2008
  12.2SRA	12.2(33)SRA1
  12.2SRB	Not Vulnerable
  12.2SRC	Not Vulnerable
  12.2SU	Not Vulnerable
  12.2SV	12.2(27)SV5 12.2(28)SV1 12.2(29)SV3 12.2(29a)SV1 12.2(29b)SV	12.2(29)SVD1; Available on 13-JUN-2008
  12.2SVA	Not Vulnerable
  12.2SVC	Not Vulnerable
  12.2SVD	Not Vulnerable
  12.2SW	12.2(25)SW8
  12.2SX	Vulnerable; first fixed in 12.2SXF	12.2(18)SXF15; Available on 08-AUG-2008
  12.2SXA	Vulnerable; first fixed in 12.2SXF	12.2(18)SXF15; Available on 08-AUG-2008
  12.2SXB	Vulnerable; first fixed in 12.2SXF	12.2(18)SXF15; Available on 08-AUG-2008
  12.2SXD	12.2(18)SXD7a	12.2(18)SXF15; Available on 08-AUG-2008
  12.2SXE	12.2(18)SXE6a	12.2(18)SXF15; Available on 08-AUG-2008
  12.2SXF	12.2(18)SXF10a 12.2(18)SXF12a 12.2(18)SXF6	12.2(18)SXF15; Available on 08-AUG-2008
  12.2SXH	Not Vulnerable
  12.2SY	Not Vulnerable
  12.2SZ	Vulnerable; first fixed in 12.2S	12.2(31)SB12 12.2(33)SRC1
  12.2T	Vulnerable; first fixed in 12.3	12.4(18b)
  12.2TPC	12.2(8)TPC10b
  12.2UZ	Vulnerable; first fixed in 12.2SB	12.2(31)SB12
  12.2XA	Vulnerable; first fixed in 12.3	12.4(18b)
  12.2XB	Vulnerable; first fixed in 12.3	12.4(18b)
  12.2XC	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.2XD	Vulnerable; first fixed in 12.3	12.4(18b)
  12.2XE	Vulnerable; first fixed in 12.3	12.4(18b)
  12.2XF	Vulnerable; first fixed in 12.3BC
  12.2XG	Vulnerable; first fixed in 12.3	12.4(18b)
  12.2XH	Vulnerable; first fixed in 12.3	12.4(18b)
  12.2XI	Vulnerable; first fixed in 12.3	12.4(18b)
  12.2XJ	Vulnerable; first fixed in 12.3	12.4(18b)
  12.2XK	Vulnerable; first fixed in 12.3	12.4(18b)
  12.2XL	Vulnerable; first fixed in 12.3	12.4(18b)
  12.2XM	Vulnerable; first fixed in 12.3	12.4(18b)
  12.2XN	12.2(33)XN1	12.4(18b)
  12.2XNA	Not Vulnerable
  12.2XO	Not Vulnerable
  12.2XQ	Vulnerable; first fixed in 12.3	12.4(18b)
  12.2XR	Vulnerable; first fixed in 12.3	12.4(18b)
  12.2XS	Vulnerable; first fixed in 12.3	12.4(18b)
  12.2XT	Vulnerable; first fixed in 12.3	12.4(18b)
  12.2XU	Vulnerable; first fixed in 12.3	12.4(18b)
  12.2XV	Vulnerable; first fixed in 12.3	12.4(18b)
  12.2XW	Vulnerable; first fixed in 12.3	12.4(18b)
  12.2YA	12.2(4)YA12	12.4(18b)
  12.2YB	Vulnerable; first fixed in 12.3	12.4(18b)
  12.2YC	Vulnerable; first fixed in 12.3	12.4(18b)
  12.2YD	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.2YE	Not Vulnerable
  12.2YF	Vulnerable; first fixed in 12.3	12.4(18b)
  12.2YG	Vulnerable; first fixed in 12.3	12.4(18b)
  12.2YH	Vulnerable; first fixed in 12.3	12.4(18b)
  12.2YJ	Vulnerable; first fixed in 12.3	12.4(18b)
  12.2YK	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.2YL	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.2YM	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.2YN	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.2YO	Vulnerable; migrate to any release in 12.2SY	12.2(18)SXF15; Available on 08-AUG-2008
  12.2YP	Vulnerable; first fixed in 12.3	12.4(18b)
  12.2YQ	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.2YR	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.2YS	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.2YT	Vulnerable; first fixed in 12.3	12.4(18b)
  12.2YU	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.2YV	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.2YW	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.2YX	Not Vulnerable
  12.2YY	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.2YZ	Vulnerable; first fixed in 12.2S	12.2(31)SB12 12.2(33)SRC1
  12.2ZA	Vulnerable; first fixed in 12.2SXF	12.2(18)SXF15; Available on 08-AUG-2008
  12.2ZB	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.2ZC	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.2ZD	Vulnerable; contact TAC
  12.2ZE	Vulnerable; first fixed in 12.3	12.4(18b)
  12.2ZF	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.2ZG	Vulnerable; first fixed in 12.3YG	12.3(2)XA7 12.4(15)T5 12.4(18b)
  12.2ZH	12.2(13)ZH9	12.2(13)ZH11
  12.2ZJ	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.2ZL	Vulnerable; first fixed in 12.3T	12.4(15)T5 12.4(18b)
  12.2ZP	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.2ZU	12.2(18)ZU1	12.2(33)SXH3; Available on 03-JUL-2008
  12.2ZY	Not Vulnerable
  Affected 12.3-Based Releases	First Fixed Release	Recommended Release
  12.3	12.3(17c) 12.3(18a) 12.3(19a) 12.3(20a) 12.3(21)	12.4(18b)
  12.3B	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.3BC	12.3(17b)BC3 12.3(21)BC
  12.3BW	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.3EU	Not Vulnerable
  12.3JA	12.3(11)JA 12.3(7)JA5 12.3(8)JA3; Available on 18-SEP-2008
  12.3JEA	Not Vulnerable
  12.3JEB	Not Vulnerable
  12.3JEC	Not Vulnerable
  12.3JK	12.3(2)JK2 12.3(8)JK1	12.3(2)JK4; Available on 30-JUN-2008 12.3(8)JK2; Available on 30-JUN-2008
  12.3JL	12.3(2)JL1	12.3(2)JL4
  12.3JX	Vulnerable; contact TAC	12.3(7)JX11
  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
  12.3XB	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.3XC	12.3(2)XC5	12.4(15)T5 12.4(18b)
  12.3XD	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.3XE	12.3(2)XE5	12.4(15)T5 12.4(18b)
  12.3XF	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.3XG	Vulnerable; first fixed in 12.3YG	12.4(15)T5 12.4(18b)
  12.3XH	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.3XI	12.3(7)XI8a
  12.3XJ	Vulnerable; first fixed in 12.3YX	12.3(14)YX11 12.4(15)T5
  12.3XK	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.3XQ	Vulnerable; first fixed in 12.4	12.4(18b)
  12.3XR	12.3(7)XR7	12.4(15)T5 12.4(18b)
  12.3XS	Vulnerable; first fixed in 12.4	12.4(18b)
  12.3XU	Vulnerable; first fixed in 12.4T	12.4(15)T5
  12.3XW	Vulnerable; first fixed in 12.3YX	12.3(14)YX11 12.4(15)T5
  12.3XY	Vulnerable; first fixed in 12.3T	12.4(18b)
  12.3YA	Vulnerable; first fixed in 12.4	12.4(15)T5 12.4(18b)
  12.3YD	Vulnerable; first fixed in 12.4T	12.4(15)T5
  12.3YF	Vulnerable; first fixed in 12.3YX	12.3(14)YX11 12.4(15)T5
  12.3YG	12.3(8)YG6	12.4(15)T5
  12.3YH	Vulnerable; first fixed in 12.4T	12.4(15)T5
  12.3YI	Vulnerable; first fixed in 12.4T	12.4(15)T5
  12.3YJ	Vulnerable; first fixed in 12.4T	12.4(15)T5
  12.3YK	12.3(11)YK3	12.4(15)T5
  12.3YM	12.3(14)YM8	12.3(14)YM12
  12.3YQ	Vulnerable; first fixed in 12.4T	12.4(15)T5
  12.3YS	12.3(11)YS2	12.4(15)T5
  12.3YT	Vulnerable; first fixed in 12.4T	12.4(15)T5
  12.3YU	Vulnerable; first fixed in 12.4XB
  12.3YX	12.3(14)YX4	12.3(14)YX11
  12.3YZ	12.3(11)YZ2
  Affected 12.4-Based Releases	First Fixed Release	Recommended Release
  12.4	12.4(10) 12.4(3f) 12.4(5c) 12.4(7c) 12.4(8b)	12.4(18b)
  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
  12.4T	12.4(11)T 12.4(2)T6 12.4(4)T5 12.4(6)T4 12.4(9)T1	12.4(15)T5
  12.4XA	Vulnerable; first fixed in 12.4T	12.4(15)T5
  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 Product	Affected Release	First Fixed Release
  Cisco Catalyst Operating System (CatOS)	6.x	6.4(23)
  	7.x	7.6(19)
  	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 Version	SMU ID	SMU Name
  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 vulnerable	Not vulnerable
  3.4.x	Not vulnerable	Not vulnerable

  Cisco NX-OS

  The following table lists fixed Cisco NX-OS software.

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

  Cisco ACE Products

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

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

  Cisco MDS 9000 SAN-OS

  The following table lists fixed Cisco MDS 9000 SAN-OS software.

  Affected Product	Affected Release	First Fixed Release
  Cisco MDS 9000 SAN-OS software	2.1 3.0 3.2 3.3(1a)	3.3(1c) 3.4.1 Available June 2008

  Cisco WLC software

  The following table lists fixed Cisco WLC software.

  Affected Product	Affected Release	First Fixed Release
  Cisco WLC	3.x 4.x 5.0.x 5.1.x	5.2.x.x Available August 2008

  Cisco ACNS software

  The following table lists fixed Cisco ACNS software.

  Affected Product	Affected Release	First Fixed Release
  Cisco ACNS software	4.x 5.x prior to 5.5.13	5.5.13 Available March 2009

  Cisco WAAS software

  The following table lists fixed Cisco WAAS software.

  Affected Product	Affected Release	First Fixed Release
  Cisco WAAS software	4.x	4.1.3 Available February 2009

  Cisco MGX software

  The following table lists fixed Cisco MGX software.

  Affected Product	Affected Release	First Fixed Release
  Cisco MGX software	5.4.x 5.5.x	5.5.10 Available April 2010

  Cisco Internet Streamer CDS software

  The following table lists fixed Cisco Cisco Internet Streamer CDS software.

  Affected Product	Affected Release	First Fixed Release
  Cisco Internet Streamer CDS	All releases prior to first fixed release.	2.6.0

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.

URL

• http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20080610-snmpv3

Revision History

• Revision 1.9	2012-November-16	Added Cisco 8485DVB Set Top Box product.
  Revision 1.8	2012-November-01	Added Cisco 8472DVB Set Top Box product.
  Revision 1.7	2010-August-09	Added information for Cisco Internet Streamer CDS.
  Revision 1.6	2010-February-22	In Affected Products section and in Software Versions and Fixes section, removed PGW 2200 after further analysis.
  Revision 1.5	2010-January-29	In Affected Products section and in Software Versions and Fixes section, added Cisco MGX and PGW.
  Revision 1.4	2009-January-08	In Affected Products section and in Software Versions and Fixes section, added Cisco ACNS and WAAS.
  Revision 1.3	2008-July-01	Updated Workarounds for Cisco MDS.
  Revision 1.2	2008-June-27	In MDS Software section under Software Versions and Fixes, made updates to Cisco MDS 9000 SAN-OS Software table.
  Revision 1.1	2008-June-20	In Affected Products section, added Cisco WLC. In Software Versions and Fixes section, updated Cisco MDS software.
  Revision 1.0	2008-June-10	Initial public release.

  Show Complete History...