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Home - Vulnerability NotesPrint
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CERT-In Vulnerability Note CIVN-2006-0134
Microsoft Windows Workstation Service Denial of Service Vulnerability

Original Issue Date:December 28, 2006

Severity Rating: MEDIUM

Systems Affected

  • Microsoft Windows 2000 Service Pack 4
  • Microsoft Windows XP Service Pack 1
  • Microsoft Windows XP Service Pack 2
  • Microsoft Windows XP Professional x64 Edition

Overview

A Denial of Service vulnerability has been reported in Microsoft Windows Workstation Service that could be exploited by an attacker to crash the system.

Description

The vulnerability is caused due to an error in workstation service while handling specially crafted "NetrWkstaUserEnum " requests.

The attacker could exploit this vulnerability by creating and sending specially crafted messages to vulnerable system. The messages could then be used to crash or exhaust all available memory resource to cause denial of service condition.

Workaround

  • Block TCP port 139 and 445 at the firewall
  • Use a personal firewall
  • Enable advanced TCP/IP filtering on systems.
  • Block the affected ports by using IPSec on the affected systems.

    • References

    FrSIRT
    http://www.frsirt.com/english/advisories/2006/5142

    CVE Name
    CVE-2006-6723

    Disclaimer

    The information provided herein is on "as is" basis, without warranty of any kind.

    Contact Information

    Email: info@cert-in.org.in
    Phone: +91-11-2436857

    Postal address

    Indian Computer Emergency Response Team (CERT-In)
    Ministry of Electronics and Information Technology
    Government of India
    Electronics Niketan
    6, CGO Complex, Lodhi Road,
    New Delhi - 110 003
    India

     
    Indian Computer Emergency Response Team - CERT-In, Ministry of Electronics and Information Technology, Government of India.
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