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  3. Microsoft Windows POSIX Subsystem Buffer Overflow Local Privilege Escalation Vulnerability

Microsoft Windows POSIX Subsystem Buffer Overflow Local Privilege Escalation Vulnerability

Risk

High

Date Discovered

July 13, 2004

Description

The Microsoft POSIX subsystem implementation is prone to a local buffer overflow vulnerability. A local attacker may exploit this vulnerability in order to run code with elevated privileges, fully compromising the vulnerable computer.

Technologies Affected

  • Avaya S3400 Message Application Server
  • Microsoft Interix 2.2
  • Microsoft Windows 2000 Advanced Server SP2
  • Microsoft Windows 2000 Advanced Server SP3
  • Microsoft Windows 2000 Advanced Server SP4
  • Microsoft Windows 2000 Datacenter Server SP2
  • Microsoft Windows 2000 Datacenter Server SP3
  • Microsoft Windows 2000 Datacenter Server SP4
  • Microsoft Windows 2000 Professional SP2
  • Microsoft Windows 2000 Professional SP3
  • Microsoft Windows 2000 Professional SP4
  • Microsoft Windows 2000 Server SP2
  • Microsoft Windows 2000 Server SP3
  • Microsoft Windows 2000 Server SP4
  • Microsoft Windows NT 4.0 SP6 alpha
  • Microsoft Windows NT Enterprise Server 4.0 SP6a
  • Microsoft Windows NT Server 4.0 SP6a
  • Microsoft Windows NT Terminal Server 4.0 SP6
  • Microsoft Windows NT Workstation 4.0 SP6a

Recommendations

Permit local access for trusted individuals only. Where possible, use restricted environments and restricted shells.

An attacker will require local interactive access prior to being in a position to exploit this vulnerability. Permit local interactive access for trusted users only.
Microsoft has released an updated security bulletin (MS04-020) and fixes to address this issue for supported operating systems. Avaya has released an advisory that acknowledges this vulnerability for Avaya products. Avaya advise that customers follow the Microsoft recommendations to address this issue. Please see the referenced Avaya advisory at the following location for further details: http://support.avaya.com/japple/css/japple?temp.groupID=128450&temp.selectedFamily=128451&temp.selectedProduct=154235&temp.selectedBucket=126655&temp.feedbackState=askForFeedback&temp.documentID=197331&PAGE=avaya.css.CSSLvl1Detail&executeTransaction=avaya.css.UsageUpdate()

Credits

Discovery of this vulnerability is credited to Rafal Wojtczuk of Network Associates.
Copyright © Symantec Corporation.
Permission to redistribute this alert electronically is granted as long as it is not edited in any way unless authorized by Symantec Security Response. Reprinting the whole or part of this alert in any medium other than electronically requires permission from secure@symantec.com.

Disclaimer
The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information.
Symantec, Symantec products, Symantec Security Response, and secure@symantec.com are registered trademarks of Symantec Corp. and/or affiliated companies in the United States and other countries. All other registered and unregistered trademarks represented in this document are the sole property of their respective companies/owners.

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