Linux kernel SCTP SO_LINGER denial of service

kernel-sctp-dos (29011) The risk level is classified as MediumMedium Risk

Description:

The Linux kernel is vulnerable to a denial of service attack, caused by improper handling of SCTP sockets. A local attacker could open an SCTP socket with an invalid SO_LINGER value to cause the kernel to crash.

*CVSS:

Base Score: 3.5
  Access Vector: Local
  Access Complexity: Low
  Authentication: Not Required
  Confidentiality Impact: None
  Integrity Impact: None
  Availability Impact: Complete
 
Temporal Score: 2.5
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Uncorroborated

Consequences:

Denial of Service

Remedy:

For Debian GNU/Linux:
Refer to DSA-1183-1 or DSA-1184-1 for patch, upgrade, or suggested workaround information. See References.

For Red Hat Linux 4:
Refer to RHSA-2006:0689-15 for patch, upgrade, or suggested workaround information. See References.

For other distributions:
Contact your vendor for upgrade or patch information.

References:

  • The Linux Kernel Archives Web site: The Linux Kernel Archives.
  • ASA-2006-249: kernel security update (RHSA-2006-0689)
  • BID-20087: Linux Kernel SCTP SO_LINGER Local Denial of Service Vulnerability
  • CVE-2006-4535: The Linux kernel 2.6.17.10 and 2.6.17.11 and 2.6.18-rc5 allows local users to cause a denial of service (crash) via an SCTP socket with a certain SO_LINGER value, possibly related to the patch for CVE-2006-3745. NOTE: older kernel versions for specific Linux distributions are also affected, due to backporting of the CVE-2006-3745 patch.
  • DSA-1183: kernel-source-2.4.27 -- several vulnerabilities
  • DSA-1184: kernel-source-2.6.8 -- several vulnerabilities
  • MDKSA-2006:182: Updated kernel packages fix multiple vulnerabilities and bugs
  • MDKSA-2007:025: Updated kernel packages fix multiple vulnerabilities and bugs
  • RHSA-2006-0689: kernel security update
  • SA21945: Linux Kernel SCTP Denial of Service Vulnerability
  • SA22945: Avaya Products Linux Kernel Multiple Vulnerabilities
  • SECTRACK ID: 1016992: Linux Kernel SCTP Socket SO_LINGER Option Lets Local Users Deny Service
  • USN-347-1: Linux kernel vulnerabilities

Platforms Affected:

  • Canonical Ubuntu 5.04
  • Canonical Ubuntu 5.10
  • Canonical Ubuntu 6.06 LTS
  • Debian Debian Linux 3.1
  • Linux Linux Kernel 2.6.17.10
  • Linux Linux Kernel 2.6.17.11
  • Linux Linux Kernel 2.6.18 rc5
  • MandrakeSoft Mandrake Linux 2006 X86_64
  • MandrakeSoft Mandrake Linux 2006
  • MandrakeSoft Mandrake Linux Corporate Server 3.0
  • MandrakeSoft Mandrake Linux Corporate Server 3.0 X86_64
  • MandrakeSoft Mandrake Linux Corporate Server 4.0 X86_64
  • MandrakeSoft Mandrake Linux Corporate Server 4.0
  • MandrakeSoft Mandrake Multi Network Firewall 2.0
  • RedHat Enterprise Linux 4 AS
  • RedHat Enterprise Linux 4 ES
  • RedHat Enterprise Linux 4 Desktop
  • RedHat Enterprise Linux 4 WS

Reported:

Sep 19, 2006

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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