Cisco IOS multiple features TCP denial of service

ios-features-tcp-dos (49420) The risk level is classified as MediumMedium Risk

Description:

Cisco IOS is vulnerable to a denial of service, caused by the improper handling of TCP packets when multiple features of Cisco IOS software are enabled. By sending a specially-crafted sequence of TCP packets to multiple TCP ports, a remote attacker could exploit this vulnerability to cause the device to reload resulting in a denial of service.

The following features are affected:

  1. Airline Product Set (aka ALPS)
  2. Serial Tunnel Code (aka STUN)
  3. Block Serial Tunnel Code (aka BSTUN)
  4. Native Client Interface Architecture (NCIA) support
  5. Data-link switching (aka DLSw)
  6. Remote Source-Route Bridging (RSRB)
  7. Point to Point Tunneling Protocol (PPTP)
  8. X.25 for Record Boundary Preservation (RBP)
  9. X.25 over TCP (XOT)
  10. X.25 Routing

*CVSS:

Base Score: 7.8
  Access Vector: Network
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: None
  Integrity Impact: None
  Availability Impact: Complete
 
Temporal Score: 5.8
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Denial of Service

Remedy:

Refer to cisco-sa-20090325-tcp for patch, upgrade or suggested workaround information. See References.

References:

  • cisco-sa-20090325-tcp: Cisco IOS Software Multiple Features Crafted TCP Sequence Vulnerability.
  • BID-34238: Cisco IOS Multiple Features TCP Packet Denial of Service Vulnerability
  • CVE-2009-0629: The (1) Airline Product Set (aka ALPS), (2) Serial Tunnel Code (aka STUN), (3) Block Serial Tunnel Code (aka BSTUN), (4) Native Client Interface Architecture (NCIA) support, (5) Data-link switching (aka DLSw), (6) Remote Source-Route Bridging (RSRB), (7) Point to Point Tunneling Protocol (PPTP), (8) X.25 for Record Boundary Preservation (RBP), (9) X.25 over TCP (XOT), and (10) X.25 Routing features in Cisco IOS 12.2 and 12.4 allows remote attackers to cause a denial of service (device reload) via a series of crafted TCP packets.
  • OSVDB ID: 53136: Cisco IOS Multiple Functionality Crafted TCP Packet Sequence Remote DoS
  • SA34438: Cisco IOS Multiple Vulnerabilities
  • SECTRACK ID: 1021903: Cisco IOS TCP Processing Flaw Lets Remote Users Deny Service

Platforms Affected:

  • Cisco IOS 12.2
  • Cisco IOS 12.2B
  • Cisco IOS 12.2BC
  • Cisco IOS 12.2BW
  • Cisco IOS 12.2BX
  • Cisco IOS 12.2BY
  • Cisco IOS 12.2BZ
  • Cisco IOS 12.2CA
  • Cisco IOS 12.2CX
  • Cisco IOS 12.2CY
  • Cisco IOS 12.2CZ
  • Cisco IOS 12.2DA
  • Cisco IOS 12.2DD
  • Cisco IOS 12.2DX
  • Cisco IOS 12.2EW
  • Cisco IOS 12.2EWA
  • Cisco IOS 12.2EX
  • Cisco IOS 12.2EY
  • Cisco IOS 12.2EZ
  • Cisco IOS 12.2FX
  • Cisco IOS 12.2FY
  • Cisco IOS 12.2JA
  • Cisco IOS 12.2JK
  • Cisco IOS 12.2L
  • Cisco IOS 12.2MB
  • Cisco IOS 12.2MC
  • Cisco IOS 12.2rc
  • Cisco IOS 12.2S
  • Cisco IOS 12.2SBC
  • Cisco IOS 12.2SO
  • 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 12.2XE
  • 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 12.2XN
  • Cisco IOS 12.2XO
  • 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 12.2YG
  • 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 12.2YS
  • 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 12.2ZH
  • Cisco IOS 12.2ZJ
  • Cisco IOS 12.2ZL
  • Cisco IOS 12.2ZP
  • Cisco IOS 12.2ZU
  • Cisco IOS 12.2ZX
  • Cisco IOS 12.2ZY
  • Cisco IOS 12.2ZYA
  • Cisco IOS 12.4
  • Cisco IOS 12.4(1)
  • Cisco IOS 12.4(1B)
  • Cisco IOS 12.4(1C)
  • Cisco IOS 12.4(2)MR
  • Cisco IOS 12.4(2)MR1
  • Cisco IOS 12.4(2)T
  • Cisco IOS 12.4(2)T1
  • Cisco IOS 12.4(2)T2
  • Cisco IOS 12.4(2)T3
  • Cisco IOS 12.4(2)T4
  • Cisco IOS 12.4(2)XA
  • Cisco IOS 12.4(2)XB
  • Cisco IOS 12.4(2)XB2
  • Cisco IOS 12.4(23)
  • Cisco IOS 12.4(3)
  • Cisco IOS 12.4(3)T2
  • Cisco IOS 12.4(3A)
  • Cisco IOS 12.4(3B)
  • Cisco IOS 12.4(3D)
  • Cisco IOS 12.4(4)MR
  • Cisco IOS 12.4(4)T
  • Cisco IOS 12.4(4)T2
  • Cisco IOS 12.4(5)
  • Cisco IOS 12.4(5B)
  • Cisco IOS 12.4(6)T
  • Cisco IOS 12.4(6)T1
  • Cisco IOS 12.4(7)
  • Cisco IOS 12.4(7A)
  • Cisco IOS 12.4(8)
  • Cisco IOS 12.4(9)T
  • Cisco IOS 12.4JA
  • Cisco IOS 12.4JDA
  • Cisco IOS 12.4JK
  • Cisco IOS 12.4JL
  • Cisco IOS 12.4JMA
  • Cisco IOS 12.4JMB
  • Cisco IOS 12.4JX
  • Cisco IOS 12.4MD
  • Cisco IOS 12.4MR
  • 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 12.4xf
  • Cisco IOS 12.4XG
  • Cisco IOS 12.4XJ
  • Cisco IOS 12.4XK
  • Cisco IOS 12.4XL
  • Cisco IOS 12.4XM
  • Cisco IOS 12.4XN
  • Cisco IOS 12.4XP
  • Cisco IOS 12.4XT
  • Cisco IOS 12.4XV
  • Cisco IOS 12.4XW
  • Cisco IOS 12.4XY
  • Cisco IOS S 12.4
  • Cisco IOS T 12.4
  • Cisco IOS XR 12.4

Reported:

Mar 25, 2009

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