libnids ip_fragment.c, denial of service

libnids-ipfragment-dos (57428) The risk level is classified as MediumMedium Risk

Description:

libnids is vulnerable to a denial of service, caused by a NULL pointer dereference in ip_fragment.c,. By sending specially-crafted network traffic, a remote attacker could exploit this vulnerability to crash the library using the affected library.

*CVSS:

Base Score: 5
  Access Vector: Network
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: None
  Integrity Impact: None
  Availability Impact: Partial
 
Temporal Score: 3.7
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Denial of Service

Remedy:

Upgrade to the latest version of libnids (1.24 or later), available from the linnids Web site. See References.

References:

  • libnids Release Notes: fixed another remotely triggerable NULL dereference in ip_fragment.c.
  • linnids Web site: libnids.
  • BID-39142: Libnids 'ip_fragment.c' Null Pointer Deference Remote Denial of Service Vulnerability
  • CVE-2010-0751: The ip_evictor function in ip_fragment.c in libnids 1.24, as used in dsniff and possibly other products, allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via crafted fragmented packets.
  • OSVDB ID: 63427: Libnids src/ip_fragment.c ip_evictor Function Crafted Packet NULL Dereference Remote DoS
  • SA39225: Libnids NULL Pointer Dereference Denial of Service

Platforms Affected:

  • Rafal Wojtczuk libnids 1.22
  • Rafal Wojtczuk libnids 1.23

Reported:

Mar 14, 2010

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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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