Cisco IOS IPv6 dual-stack denial of service

cisco-ios-ipv6-dualstack-dos (41475) The risk level is classified as LowLow Risk

Description:

Cisco IOS is vulnerable to a denial of service, caused by an error when IPv6 is enabled on dual-stack capable routers. By sending a specially-crafted IPv6 packet to an interface running IPv4 UDP services, a remote attacker could block the interface or cause the device to crash if the RSVP service is enabled.

Platforms Affected:

  • Cisco, IOS 12.0S
  • Cisco, IOS 12.0SY
  • Cisco, IOS 12.0SZ
  • Cisco, IOS 12.1XU
  • Cisco, IOS 12.1XV
  • Cisco, IOS 12.1YB
  • Cisco, IOS 12.1YC
  • Cisco, IOS 12.1YD
  • Cisco, IOS 12.1YF
  • Cisco, IOS 12.1YH
  • Cisco, IOS 12.1YI
  • Cisco, IOS 12.2B
  • Cisco, IOS 12.2BC
  • Cisco, IOS 12.2BW
  • Cisco, IOS 12.2BY
  • Cisco, IOS 12.2BZ
  • Cisco, IOS 12.2CX
  • Cisco, IOS 12.2CY
  • Cisco, IOS 12.2CZ
  • Cisco, IOS 12.2DD
  • Cisco, IOS 12.2DX
  • Cisco, IOS 12.2EU
  • Cisco, IOS 12.2EW
  • Cisco, IOS 12.2EZ
  • Cisco, IOS 12.2FX
  • Cisco, IOS 12.2FY
  • Cisco, IOS 12.2FZ
  • Cisco, IOS 12.2IXA
  • Cisco, IOS 12.2IXB
  • Cisco, IOS 12.2IXC
  • Cisco, IOS 12.2IXD
  • Cisco, IOS 12.2JA
  • Cisco, IOS 12.2JK
  • Cisco, IOS 12.2MB
  • Cisco, IOS 12.2SBC
  • Cisco, IOS 12.2SEA
  • Cisco, IOS 12.2SEB
  • Cisco, IOS 12.2SEC
  • Cisco, IOS 12.2SED
  • Cisco, IOS 12.2SM
  • Cisco, IOS 12.2SO
  • Cisco, IOS 12.2SU
  • Cisco, IOS 12.2SW
  • Cisco, IOS 12.2SX
  • Cisco, IOS 12.2SXA
  • Cisco, IOS 12.2SXB
  • Cisco, IOS 12.2SXD
  • Cisco, IOS 12.2SXE
  • Cisco, IOS 12.2SY
  • Cisco, IOS 12.2SZ
  • Cisco, IOS 12.2T
  • Cisco, IOS 12.2UZ
  • Cisco, IOS 12.2XA
  • Cisco, IOS 12.2XB
  • Cisco, IOS 12.2XC
  • Cisco, IOS 12.2XD
  • Cisco, IOS 12.2XE
  • Cisco, IOS 12.2XF
  • Cisco, IOS 12.2XG
  • Cisco, IOS 12.2XH
  • Cisco, IOS 12.2XI
  • Cisco, IOS 12.2XJ
  • Cisco, IOS 12.2XK
  • Cisco, IOS 12.2XL
  • Cisco, IOS 12.2XM
  • Cisco, IOS 12.2XQ
  • Cisco, IOS 12.2XR
  • Cisco, IOS 12.2XT
  • Cisco, IOS 12.2XU
  • Cisco, IOS 12.2XV
  • Cisco, IOS 12.2XW
  • Cisco, IOS 12.2YB
  • Cisco, IOS 12.2YC
  • Cisco, IOS 12.2YD
  • Cisco, IOS 12.2YE
  • Cisco, IOS 12.2YF
  • Cisco, IOS 12.2YG
  • Cisco, IOS 12.2YH
  • Cisco, IOS 12.2YJ
  • Cisco, IOS 12.2YK
  • Cisco, IOS 12.2YL
  • Cisco, IOS 12.2YM
  • Cisco, IOS 12.2YN
  • Cisco, IOS 12.2YO
  • Cisco, IOS 12.2YP
  • Cisco, IOS 12.2YQ
  • Cisco, IOS 12.2YR
  • Cisco, IOS 12.2YT
  • Cisco, IOS 12.2YU
  • Cisco, IOS 12.2YV
  • Cisco, IOS 12.2YW
  • Cisco, IOS 12.2YX
  • Cisco, IOS 12.2YY
  • Cisco, IOS 12.2YZ
  • Cisco, IOS 12.2ZA
  • Cisco, IOS 12.2ZB
  • Cisco, IOS 12.2ZC
  • Cisco, IOS 12.2ZD
  • Cisco, IOS 12.2ZE
  • Cisco, IOS 12.2ZF
  • Cisco, IOS 12.2ZG
  • Cisco, IOS 12.2ZJ
  • Cisco, IOS 12.2ZL
  • Cisco, IOS 12.2ZP
  • Cisco, IOS 12.2ZU
  • Cisco, IOS 12.3B
  • Cisco, IOS 12.3BW
  • Cisco, IOS 12.3T
  • Cisco, IOS 12.3VA
  • Cisco, IOS 12.3XB
  • Cisco, IOS 12.3XD
  • Cisco, IOS 12.3XF
  • Cisco, IOS 12.3XG
  • Cisco, IOS 12.3XH
  • Cisco, IOS 12.3XJ
  • Cisco, IOS 12.3XK
  • Cisco, IOS 12.3XQ
  • Cisco, IOS 12.3XS
  • Cisco, IOS 12.3XU
  • Cisco, IOS 12.3XW
  • Cisco, IOS 12.3XY
  • Cisco, IOS 12.3YA
  • Cisco, IOS 12.3YD
  • Cisco, IOS 12.3YF
  • Cisco, IOS 12.3YI
  • Cisco, IOS 12.3YJ
  • Cisco, IOS 12.3YQ
  • Cisco, IOS 12.3YT
  • Cisco, IOS 12.3YU
  • Cisco, IOS 12.4XA
  • Cisco, IOS prior to 12.1(5)YE6

Remedy:

Refer to cisco-sa-20080326-IPv4IPv6 for patch, upgrade or suggested workaround information. See References.

Consequences:

Denial of Service

References:

  • cisco-sa-20080326-IPv4IPv6, Cisco Security Advisory: Cisco IOS User Datagram Protocol Delivery Issue For IPv4/IPv6 Dual-stack Routers at http://www.cisco.com/warp/public/707/cisco-sa-20080326-IPv4IPv6.shtml.
  • BID-28461: Cisco IOS Dual-stack Router IPv6 Denial Of Service Vulnerability
  • CVE-2008-1153: Cisco IOS 12.1, 12.2, 12.3, and 12.4, with IPv4 UDP services and the IPv6 protocol enabled, allows remote attackers to cause a denial of service (device crash and possible blocked interface) via a crafted IPv6 packet to the device.
  • FrSIRT/ADV-2008-1006: Cisco IOS Denial of Service and Information Disclosure Vulnerabilities
  • SA29507: Cisco IOS Multiple Vulnerabilities
  • SECTRACK ID: 1019713: Cisco IOS UDP Router Services Bug on IPv4/IPv6 Devices Lets Remote Users Deny Service
  • US-CERT VU#936177: Cisco IOS denial of service vulnerability

Reported:

Mar 26, 2008

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