Linux SCTP fragmented control chunk denial of service

linux-sctp-control-chunk-dos (26431) The risk level is classified as MediumMedium Risk

Description:

Linux kernel SCTP (lksctp) could allow a remote attacker to cause a denial of service, caused by improper handling of fragmented COOKIE_ECHO and HEARTBEAT SCTP control chunks. A remote attacker could exploit this vulnerability to cause a kernel panic.

*CVSS:

Base Score: 5
  Access Vector: Remote
  Access Complexity: Low
  Authentication: Not Required
  Confidentiality Impact: None
  Integrity Impact: None
  Availability Impact: Complete
 
Temporal Score: 3.7
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Denial of Service

Remedy:

Upgrade to the latest stable version of the Linux kernel (2.6.16.16 or later), available from The Linux Kernel Archives. See References.

For Red Hat Linux:
Refer to RHSA-2006:0493-6 for patch, upgrade, or suggested workaround information. See References.

For Debian GNU/Linux:
Refer to DSA-1097-1 and DSA-1103-1 for patch, upgrade, or suggested workaround information. See References.

For SUSE Linux:
Refer to SUSE-SA:2006:028 for patch, upgrade, or suggested workaround information. See References.

For other distributions:
Apply the appropriate update for your system. See References.

References:

Platforms Affected:

  • Canonical Ubuntu 5.04
  • Canonical Ubuntu 5.10
  • Canonical Ubuntu 6.06 LTS
  • Debian Debian Linux 3.1
  • lksctp lksctp 2.6.0_Test1_0.7.2
  • lksctp lksctp 2.6.0_Test4_0.7.3
  • lksctp lksctp 2.6.10_1.0.2
  • lksctp lksctp 2.6.13_1.0.3
  • lksctp lksctp 2.6.14_1.0.4
  • lksctp lksctp 2.6.15_1.0.5
  • lksctp lksctp 2.6.16_1.0.6
  • lksctp lksctp 2.6.2_0.9.0
  • lksctp lksctp 2.6.3_1.0.0
  • lksctp lksctp 2.6.6_1.0.1
  • MandrakeSoft Mandrake Linux 2006
  • MandrakeSoft Mandrake Linux 2006 X86_64
  • Novell UnitedLinux 1.0
  • RedHat Enterprise Linux 4 AS
  • RedHat Enterprise Linux 4 Desktop
  • RedHat Enterprise Linux 4 ES
  • RedHat Enterprise Linux 4 WS
  • SuSE Linux Enterprise Server 8
  • SuSE Linux Enterprise Server 9
  • SUSE SuSE Linux 10.0
  • SUSE SuSE Linux 9.1
  • SUSE SuSE Linux 9.2
  • SUSE SuSE Linux 9.3
  • SuSE SuSE SLES 9

Reported:

May 08, 2006

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