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Home - Vulnerability NotesPrint
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CERT-In Vulnerability Note CIVN-2006-0131
Remote Code Execution Vulnerability in Microsoft Windows RIS

Original Issue Date:December 13, 2006

Severity Rating: MEDIUM

Systems Affected

Microsoft Windows 2000 Service Pack 4

Overview

A remote code execution vulnerability exists in Microsoft Windows RIS implementation which could allow an attacker to compromise operating system installs offered by RIS sever.

Description

A remote code execution vulnerability has been reported in Microsoft Windows Remote Installation Services RIS implementation which is caused by allowing anonymous access to the file structure of a hosted operating system build through the RIS TFTP service.



Remote Installation Services RIS is a Pre-boot Execution Environment PXE -based deployment technology that allows Windows setup to initiate over a network.

Any anonymous user who could deliver a specially crafted executable or file to the affected RIS system could try to exploit this vulnerability at a later time on systems that are built using the tampered operating system build and could remotely take complete control of it.



Workaround

  • Configure the TFTP service as read only.
  • Block port 69 UDP at the firewall for all unsolicited inbound communication from the Internet
  • Stop the TFTP service if it is not needed.

    • Solution

    Apply appropriate patches as mentioned in Microsoft Security Bulletin MS06-077

    Vendor Information

    Microsoft
    http://www.microsoft.com/technet/security/bulletin/ms06-077.mspx

    References

    Secunia
    http://secunia.com/advisories/23312/

    Security Tracker
    http://securitytracker.com/alerts/2006/Dec/1017368.html

    FrSirt
    http://www.frsirt.com/english/advisories/2006/4970

    CVE Name
    CVE-2006-5584

    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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