Cisco IOS Next Hop Resolution Protocol buffer overflow

cisco-ios-nexthop-bo (35889) The risk level is classified as HighHigh Risk

Description:

Multiple Cisco devices running versions of Cisco IOS with the Next Hop Resolution Protocol enabled are vulnerable to a buffer overflow. By sending specially-crafted data, a remote attacker could exploit this vulnerability to overflow a buffer and execute arbitrary code on the system or cause the device to restart.

Platforms Affected:

  • Cisco, IOS 12.0
  • Cisco, IOS 12.0DC
  • Cisco, IOS 12.0S
  • Cisco, IOS 12.0SC
  • Cisco, IOS 12.0SL
  • Cisco, IOS 12.0SP
  • Cisco, IOS 12.0ST
  • Cisco, IOS 12.0SX
  • Cisco, IOS 12.0SY
  • Cisco, IOS 12.0SZ
  • Cisco, IOS 12.0T
  • Cisco, IOS 12.0XA
  • Cisco, IOS 12.0XC
  • Cisco, IOS 12.0XD
  • Cisco, IOS 12.0XE
  • Cisco, IOS 12.0XG
  • Cisco, IOS 12.0XH
  • Cisco, IOS 12.0XI
  • Cisco, IOS 12.0XJ
  • Cisco, IOS 12.0XK
  • Cisco, IOS 12.0XL
  • Cisco, IOS 12.0XN
  • Cisco, IOS 12.0XQ
  • Cisco, IOS 12.0XR
  • Cisco, IOS 12.1
  • Cisco, IOS 12.1AA
  • Cisco, IOS 12.1CX
  • Cisco, IOS 12.1DA
  • Cisco, IOS 12.1DC
  • Cisco, IOS 12.1E
  • Cisco, IOS 12.1EC
  • Cisco, IOS 12.1EU
  • Cisco, IOS 12.1EW
  • Cisco, IOS 12.1EX
  • Cisco, IOS 12.1EZ
  • Cisco, IOS 12.1GA
  • Cisco, IOS 12.1GB
  • Cisco, IOS 12.1T
  • Cisco, IOS 12.1XA
  • Cisco, IOS 12.1XC
  • Cisco, IOS 12.1XD
  • Cisco, IOS 12.1XG
  • Cisco, IOS 12.1XH
  • Cisco, IOS 12.1XI
  • Cisco, IOS 12.1XJ
  • Cisco, IOS 12.1XL
  • Cisco, IOS 12.1XM
  • Cisco, IOS 12.1XP
  • Cisco, IOS 12.1XQ
  • Cisco, IOS 12.1XR
  • Cisco, IOS 12.1XS
  • Cisco, IOS 12.1XT
  • Cisco, IOS 12.1XV
  • Cisco, IOS 12.1XW
  • Cisco, IOS 12.1XX
  • Cisco, IOS 12.1XY
  • Cisco, IOS 12.1XZ
  • Cisco, IOS 12.1YA
  • Cisco, IOS 12.1YB
  • Cisco, IOS 12.1YD
  • Cisco, IOS 12.1YE
  • Cisco, IOS 12.1YF
  • Cisco, IOS 12.1YI
  • Cisco, IOS 12.2
  • 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 12.2DA
  • Cisco, IOS 12.2DD
  • Cisco, IOS 12.2DX
  • Cisco, IOS 12.2EU
  • Cisco, IOS 12.2EW
  • Cisco, IOS 12.2EWA
  • Cisco, IOS 12.2MB
  • Cisco, IOS 12.2MC
  • Cisco, IOS 12.2S
  • Cisco, IOS 12.2SB
  • Cisco, IOS 12.2SBC
  • Cisco, IOS 12.2SG
  • Cisco, IOS 12.2SGA
  • Cisco, IOS 12.2SM
  • 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 12.2SY
  • Cisco, IOS 12.2SZ
  • Cisco, IOS 12.2T
  • Cisco, IOS 12.2TPC
  • Cisco, IOS 12.2UZ
  • Cisco, IOS 12.2VZ
  • 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 12.2XJ
  • Cisco, IOS 12.2XK
  • Cisco, IOS 12.2XL
  • Cisco, IOS 12.2XM
  • Cisco, IOS 12.2XN
  • Cisco, IOS 12.2XQ
  • Cisco, IOS 12.2XR
  • Cisco, IOS 12.2XS
  • Cisco, IOS 12.2XT
  • Cisco, IOS 12.2XU
  • Cisco, IOS 12.2XV
  • Cisco, IOS 12.2XW
  • Cisco, IOS 12.2YA
  • Cisco, IOS 12.2YB
  • Cisco, IOS 12.2YC
  • 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 12.2YP
  • 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 12.2ZE
  • Cisco, IOS 12.2ZF
  • Cisco, IOS 12.2ZG
  • Cisco, IOS 12.2ZH
  • Cisco, IOS 12.2ZJ
  • Cisco, IOS 12.2ZL
  • Cisco, IOS 12.2ZR
  • Cisco, IOS 12.3
  • Cisco, IOS 12.3B
  • Cisco, IOS 12.3BC
  • Cisco, IOS 12.3BW
  • Cisco, IOS 12.3T
  • Cisco, IOS 12.3TPC
  • 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 12.3YA
  • 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 12.4
  • Cisco, IOS 12.4MR
  • Cisco, IOS 12.4T
  • Cisco, IOS 12.4XB

Remedy:

Refer to cisco-sa-20070808-nhrp for upgrade or suggested workaround information. See References.

Consequences:

Gain Access

References:

  • cisco-sa-20070808-nhrp, Cisco Security Advisory: Cisco IOS Next Hop Resolution Protocol Vulnerability at http://www.cisco.com/warp/public/707/cisco-sa-20070808-nhrp.shtml.
  • BID-25238: CISCO IOS NHRP Remote Buffer Overflow Vulnerability
  • CVE-2007-4286: Buffer overflow in the Next Hop Resolution Protocol (NHRP) functionality in Cisco IOS 12.0 through 12.4 allows remote attackers to cause a denial of service (restart) and execute arbitrary code via a crafted NHRP packet.
  • SA26360: Cisco IOS Next Hop Resolution Protocol Buffer Overflow
  • SECTRACK ID: 1018535: Cisco IOS Next Hop Resolution Protocol (NHRP) Bug Lets Remote Users Deny Service or Execute Arbitrary Code
  • US-CERT VU#201984: Cisco IOS fails to properly handle Next Hop Resolution Protocol packets
  • VUPEN/ADV-2007-2818: Cisco IOS Next Hop Resolution Protocol Remote Code Execution Vulnerability

Reported:

Aug 08, 2007

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