SkipNavigation
Home | FAQ | Contact | Privacy Policy
US-CERT
American Flag
  Vulnerability
Notes
Database

Search Vulnerability Notes

Vulnerability Notes Help Information


 
 View Notes By
  Name

ID Number

CVE Name

Date Public

Date Published

Date Updated

Severity Metric
 Other Documents
  Technical Alerts

Technical Bulletins

Alerts

Security Tips

Vulnerability Note VU#238064

Microsoft Remote Installation Service Writable Path Vulnerability

Overview

A vulnerability in the way Microsoft Remote Installation Service handles TFTP may allow a remote, unauthorized attacker to create or overwrite arbitrary operating system files.

I. Description

Microsoft Remote Installation Service contains a vulnerability in the way that it provides TFTP access. According to Microsoft Security Bulletin ms06-077:

    The vulnerability is caused by allowing anonymous access to the file structure of a hosted operating system build through the RIS TFTP service.

Note that this vulnerability has only been reported to affect Microsoft Windows 2000. Microsoft Remote Installation Service is not installed on Microsoft Windows 2000 by default.

II. Impact

A remote, unauthenticated attacker may be able to create or overwrite operating system files hosted on the Microsoft Remote Installation Service server, allowing for the insertion of backdoors or other malicious code. As a result, any system subsequently managed by, or installed from the vulnerable Remote Installation Server would be fully compromised.

III. Solution

Update

Microsoft has released an update to address this issue. See Microsoft Security Bulletin ms06-077 for more details.

Apply a Workaround

  • Restrict write access to the TFTP service
  • Block UDP port 69
  • Disable the TFTP service

See Microsoft Security Bulletin ms06-077 for more details.

Systems Affected
VendorStatusDate NotifiedDate Updated
Microsoft CorporationVulnerable13-Dec-2006

References


http://www.microsoft.com/technet/security/bulletin/ms06-077.mspx
http://secunia.com/advisories/23312/

Credit

This vulnerability was reported in Microsoft Security Bulletin ms06-077. Microsoft credits Nicolas Ruff for reporting this issue.

This document was written by Chris Taschner.

Other Information

Date Public:2006-12-12
Date First Published:2006-12-14
Date Last Updated:2007-01-05
CERT Advisory: 
CVE-ID(s):CVE-2006-5584
NVD-ID(s):CVE-2006-5584
US-CERT Technical Alerts: 
Metric:28.43
Document Revision:13

If you have feedback, comments, or additional information about this vulnerability, please send us email.
 

 
Page Corner Image
Produced 2006 by US-CERT, a government organization
Disclaimers and copyright information
Get Adobe Reader Get Adobe Reader