J-Security Center

Title: NT Performance Counters Memory Leak Vulnerability

Severity: MODERATE

Description:

A memory leak exists in the NT performance counters that may cause an NT host to stop functioning and/or need to be rebooted. Specifically, when a request is made to monitor a counter that does not exist on a machine, the memory leak may occur. For example, Healthmon.exe, from Microsoft Systems Management Server 2.0, requires SNMP to be loaded on the host. If SNMP is not installed, memory may not be deallocated from looking for a performance counter that does not exist. This condition may cause the computer to stop functioning or responding to future requests.

Affected Products:

  • Microsoft Windows NT 4.0
  • Microsoft Windows NT 4.0 SP1
  • Microsoft Windows NT 4.0 SP2
  • Microsoft Windows NT 4.0 SP3
  • Microsoft Windows NT 4.0 SP4
  • Microsoft Windows NT 4.0 SP5
  • Microsoft Windows NT Enterprise Server 4.0
  • Microsoft Windows NT Enterprise Server 4.0 SP1
  • Microsoft Windows NT Enterprise Server 4.0 SP2
  • Microsoft Windows NT Enterprise Server 4.0 SP3
  • Microsoft Windows NT Enterprise Server 4.0 SP4
  • Microsoft Windows NT Enterprise Server 4.0 SP5
  • Microsoft Windows NT Server 4.0
  • Microsoft Windows NT Server 4.0 SP1
  • Microsoft Windows NT Server 4.0 SP2
  • Microsoft Windows NT Server 4.0 SP3
  • Microsoft Windows NT Server 4.0 SP4
  • Microsoft Windows NT Server 4.0 SP5
  • Microsoft Windows NT Terminal Server 4.0
  • Microsoft Windows NT Terminal Server 4.0 SP1
  • Microsoft Windows NT Terminal Server 4.0 SP2
  • Microsoft Windows NT Terminal Server 4.0 SP3
  • Microsoft Windows NT Terminal Server 4.0 SP4
  • Microsoft Windows NT Terminal Server 4.0 SP5
  • Microsoft Windows NT Workstation 4.0
  • Microsoft Windows NT Workstation 4.0 SP1
  • Microsoft Windows NT Workstation 4.0 SP2
  • Microsoft Windows NT Workstation 4.0 SP3
  • Microsoft Windows NT Workstation 4.0 SP4
  • Microsoft Windows NT Workstation 4.0 SP5

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