Linux kernel PPTP NAT helper pointer difference denial of service

kernel-pptpnathelper-dos (24204) The risk level is classified as MediumMedium Risk

Description:

Linux kernel is vulnerable to a denial of service attack. The difference between two pointers to the header are not properly calculated by the PPTP NAT helper. A local attacker could exploit this vulnerability to cause the kernel to crash.


Consequences:

Denial of Service

Remedy:

Upgrade to the latest stable version of Linux Kernel (2.6.15.1 or later), available from The Linux Kernel Archives. See References.

References:

  • The Linux Kernel Archives Web site: 2.6.15.1 Changelog.
  • The The Linux Kernel Archives Web site: The Linux Kernel Archives.
  • BID-16414: Linux Kernel Multiple Security Vulnerabilities
  • CVE-2006-0037: ip_nat_pptp in the PPTP NAT helper (netfilter/ip_nat_helper_pptp.c) in Linux kernel 2.6.14, and other versions, allows local users to cause a denial of service (memory corruption or crash) via a crafted outbound packet that causes an incorrect offset to be calculated from pointer arithmetic when non-linear SKBs (socket buffers) are used.
  • SA18482: Linux Kernel Multiple Denial of Service Vulnerabilities
  • VUPEN/ADV-2006-0220: Linux Kernel Multiple Remote and Local Denial of Service Vulnerabilities

Platforms Affected:

  • Linux Linux Kernel 2.6.14.1
  • Linux Kernel 2.6.0 test1
  • Linux Kernel 2.6.0 test10
  • Linux Kernel 2.6.0 test11
  • Linux Kernel 2.6.0 test2
  • Linux Kernel 2.6.0 test3
  • Linux Kernel 2.6.0 test4
  • Linux Kernel 2.6.0 test5
  • Linux Kernel 2.6.0 test6
  • Linux Kernel 2.6.0 test7
  • Linux Kernel 2.6.0 test8
  • Linux Kernel 2.6.0 test9
  • Linux Kernel 2.6.0
  • Linux Kernel 2.6.1 rc1
  • Linux Kernel 2.6.1 rc2
  • Linux Kernel 2.6.1 rc3
  • Linux Kernel 2.6.1
  • Linux Kernel 2.6.10 rc2
  • Linux Kernel 2.6.10 rc1
  • Linux Kernel 2.6.10 rc3
  • Linux Kernel 2.6.10
  • Linux Kernel 2.6.11 rc3
  • Linux Kernel 2.6.11 rc1
  • Linux Kernel 2.6.11 rc4
  • Linux Kernel 2.6.11 rc5
  • Linux Kernel 2.6.11 rc2
  • Linux Kernel 2.6.11
  • Linux Kernel 2.6.11.1
  • Linux Kernel 2.6.11.10
  • Linux Kernel 2.6.11.11
  • Linux Kernel 2.6.11.12
  • Linux Kernel 2.6.11.2
  • Linux Kernel 2.6.11.3
  • Linux Kernel 2.6.11.4
  • Linux Kernel 2.6.11.5
  • Linux Kernel 2.6.11.6
  • Linux Kernel 2.6.11.7
  • Linux Kernel 2.6.11.8
  • Linux Kernel 2.6.11.9
  • Linux Kernel 2.6.12 rc3
  • Linux Kernel 2.6.12 rc1
  • Linux Kernel 2.6.12 rc6
  • Linux Kernel 2.6.12 rc5
  • Linux Kernel 2.6.12 rc4
  • Linux Kernel 2.6.12 rc2
  • Linux Kernel 2.6.12
  • Linux Kernel 2.6.12.1
  • Linux Kernel 2.6.12.12
  • Linux Kernel 2.6.12.2
  • Linux Kernel 2.6.12.22
  • Linux Kernel 2.6.12.3
  • Linux Kernel 2.6.12.4
  • Linux Kernel 2.6.12.5
  • Linux Kernel 2.6.12.6
  • Linux Kernel 2.6.13 rc3
  • Linux Kernel 2.6.13 rc7
  • Linux Kernel 2.6.13 rc6
  • Linux Kernel 2.6.13 rc5
  • Linux Kernel 2.6.13 rc2
  • Linux Kernel 2.6.13 rc1
  • Linux Kernel 2.6.13 rc4
  • Linux Kernel 2.6.13
  • Linux Kernel 2.6.13.1
  • Linux Kernel 2.6.13.2
  • Linux Kernel 2.6.13.3
  • Linux Kernel 2.6.13.4
  • Linux Kernel 2.6.13.5
  • Linux Kernel 2.6.14
  • Linux Kernel 2.6.14 rc1
  • Linux Kernel 2.6.14 rc5
  • Linux Kernel 2.6.14 rc4
  • Linux Kernel 2.6.14 rc3
  • Linux Kernel 2.6.14 rc2
  • Linux Kernel 2.6.15 rc1
  • Linux Kernel 2.6.15 rc2
  • Linux Kernel 2.6.15 rc5
  • Linux Kernel 2.6.15 rc6
  • Linux Kernel 2.6.15 rc7
  • Linux Kernel 2.6.15 rc3
  • Linux Kernel 2.6.15 rc4
  • Linux Kernel 2.6.2 rc1
  • Linux Kernel 2.6.2 rc2
  • Linux Kernel 2.6.2 rc3
  • Linux Kernel 2.6.3 rc1
  • Linux Kernel 2.6.3 rc2
  • Linux Kernel 2.6.3 rc3
  • Linux Kernel 2.6.3 rc4
  • Linux Kernel 2.6.3
  • Linux Kernel 2.6.4 rc1
  • Linux Kernel 2.6.4 rc2
  • Linux Kernel 2.6.4 rc3
  • Linux Kernel 2.6.4
  • Linux Kernel 2.6.5 rc1
  • Linux Kernel 2.6.5 rc2
  • Linux Kernel 2.6.5 rc3
  • Linux Kernel 2.6.5
  • Linux Kernel 2.6.6 rc3
  • Linux Kernel 2.6.6 rc2
  • Linux Kernel 2.6.6 rc1
  • Linux Kernel 2.6.6
  • Linux Kernel 2.6.7 rc3
  • Linux Kernel 2.6.7 rc2
  • Linux Kernel 2.6.7 rc1
  • Linux Kernel 2.6.7
  • Linux Kernel 2.6.8 rc1
  • Linux Kernel 2.6.8 rc3
  • Linux Kernel 2.6.8 rc4
  • Linux Kernel 2.6.8 rc2
  • Linux Kernel 2.6.8
  • Linux Kernel 2.6.8.1
  • Linux Kernel 2.6.9 rc4
  • Linux Kernel 2.6.9 rc1
  • Linux Kernel 2.6.9 rc3
  • Linux Kernel 2.6.9 rc2
  • Linux Kernel 2.6.9
  • Linux Linux Kernel 2.6.14.2
  • Linux Linux Kernel 2.6.14.3
  • Linux Linux Kernel 2.6.14.4
  • Linux Linux Kernel 2.6.14.5
  • Linux Linux Kernel 2.6.14.6
  • Linux Linux Kernel 2.6.14.7
  • Linux Linux Kernel 2.6.15
  • Linux Linux Kernel 2.6.2

Reported:

Jan 16, 2006

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