Cisco IOS IPv6 Type 0 routing header denial of service

cisco-ios-ipv6-type0-dos (31715)

Medium Risk

Description:

Cisco devices running certain versions of Cisco Internetworking Operating System Software (IOS) with IPv6 enabled are vulnerable to a denial of service attack, caused by improper handling of certain IPv6 packets. By sending an IPv6 packet containing a specially-crafted Type 0 routing header, a remote attacker could corrupt memory and cause the affected device to crash. It may also be possible to exploit this vulnerability to execute arbitrary code on the affected device.

Platforms Affected:

• Cisco, IOS 12.0S
• Cisco, IOS 12.0ST
• Cisco, IOS 12.0SX
• 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 12.21XA
• Cisco, IOS 12.21XB
• Cisco, IOS 12.2B
• Cisco, IOS 12.2BC
• Cisco, IOS 12.2BW
• Cisco, IOS 12.2BY
• Cisco, IOS 12.2CX
• Cisco, IOS 12.2DD
• Cisco, IOS 12.2DX
• Cisco, IOS 12.2EU
• Cisco, IOS 12.2EW
• Cisco, IOS 12.2EWA
• Cisco, IOS 12.2EZ
• Cisco, IOS 12.2IXC
• Cisco, IOS 12.2MC
• Cisco, IOS 12.2S
• Cisco, IOS 12.2SB
• Cisco, IOS 12.2SBC
• Cisco, IOS 12.2SEA
• Cisco, IOS 12.2SEB
• Cisco, IOS 12.2SEC
• Cisco, IOS 12.2SED
• Cisco, IOS 12.2SEE
• Cisco, IOS 12.2SEG
• Cisco, IOS 12.2SG
• Cisco, IOS 12.2SGA
• Cisco, IOS 12.2SRA
• Cisco, IOS 12.2SRB
• Cisco, IOS 12.2SU
• Cisco, IOS 12.2SV
• 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 12.2SXF
• Cisco, IOS 12.2SY
• Cisco, IOS 12.2SZ
• Cisco, IOS 12.2T
• Cisco, IOS 12.2TPC
• Cisco, IOS 12.2XA
• Cisco, IOS 12.2XB
• Cisco, IOS 12.2XC
• Cisco, IOS 12.2XD
• 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 12.2XN
• Cisco, IOS 12.2XQ
• Cisco, IOS 12.2XS
• Cisco, IOS 12.2XU
• Cisco, IOS 12.2XV
• Cisco, IOS 12.2XW
• Cisco, IOS 12.2YA
• Cisco, IOS 12.2YB
• Cisco, IOS 12.2YD
• Cisco, IOS 12.2YE
• Cisco, IOS 12.2YF
• Cisco, IOS 12.2YH
• Cisco, IOS 12.2YJ
• Cisco, IOS 12.2YL
• Cisco, IOS 12.2YM
• Cisco, IOS 12.2YN
• 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 12.2ZD
• Cisco, IOS 12.2ZE
• Cisco, IOS 12.2ZF
• Cisco, IOS 12.2ZH
• Cisco, IOS 12.2ZJ
• Cisco, IOS 12.2ZL
• Cisco, IOS 12.2ZN
• Cisco, IOS 12.3
• Cisco, IOS 12.3B
• Cisco, IOS 12.3BC
• Cisco, IOS 12.3BW
• Cisco, IOS 12.3JEA
• Cisco, IOS 12.3JEB
• Cisco, IOS 12.3T
• Cisco, IOS 12.3XA
• Cisco, IOS 12.3XB
• Cisco, IOS 12.3XC
• Cisco, IOS 12.3XD
• Cisco, IOS 12.3XE
• Cisco, IOS 12.3XF
• Cisco, IOS 12.3XG
• Cisco, IOS 12.3XH
• Cisco, IOS 12.3XI
• Cisco, IOS 12.3XJ
• Cisco, IOS 12.3XK
• Cisco, IOS 12.3XQ
• Cisco, IOS 12.3XR
• Cisco, IOS 12.3XS
• Cisco, IOS 12.3XU
• Cisco, IOS 12.3XW
• Cisco, IOS 12.3XX
• Cisco, IOS 12.3YA
• Cisco, IOS 12.3YD
• Cisco, IOS 12.3YF
• Cisco, IOS 12.3YG
• Cisco, IOS 12.3YH
• Cisco, IOS 12.3YI
• Cisco, IOS 12.3YJ
• Cisco, IOS 12.3YK
• Cisco, IOS 12.3YM
• Cisco, IOS 12.3YQ
• Cisco, IOS 12.3YS
• Cisco, IOS 12.3YT
• Cisco, IOS 12.3YU
• Cisco, IOS 12.3YX
• Cisco, IOS 12.3YZ
• Cisco, IOS 12.4SW
• Cisco, IOS 12.4T
• Cisco, IOS 12.4XA
• Cisco, IOS 12.4XB
• Cisco, IOS 12.4XC
• Cisco, IOS 12.4XD
• Cisco, IOS 12.4XE
• Cisco, IOS 12.4XG
• Cisco, IOS 12.4XJ
• Cisco, IOS 12.4XP
• Cisco, IOS 12.4XT

Remedy:

Refer to cisco-sa-20070124-IOS-IPv6 for upgrade or suggested workaround information. See References.

Consequences:

Denial of Service

References:

• cisco-sa-20070124-IOS-IPv6, Cisco Security Advisory: IPv6 Routing Header Vulnerability at http://www.cisco.com/warp/public/707/cisco-sa-20070124-IOS-IPv6.shtml.
• BID-22210: Cisco IOS IPv6 Source Routing Remote Memory Corruption Vulnerability
• CVE-2007-0481: Cisco IOS allows remote attackers to cause a denial of service (crash) via a crafted IPv6 Type 0 Routing header.
• SA23867: Cisco IOS Multiple Vulnerabilities
• SECTRACK ID: 1017550: Cisco IOS IPv6 Type 0 Routing Header Bug Lets Remote Users Deny Service
• US-CERT VU#274760: Cisco IOS fails to properly process specially crafted IPv6 packets
• VUPEN/ADV-2007-0329: Cisco IOS Packets Handling Remote Code Execution and Denial of Service Vulnerabilities

Reported:

Jan 24, 2007

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