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  3. Microsoft Data Access Components RDS Buffer Overflow Vulnerability

Microsoft Data Access Components RDS Buffer Overflow Vulnerability

Risk

High

Date Discovered

November 20, 2002

Description

Microsoft Data Access Components (MDAC) contains a buffer overflow in a Remote Data Services (RDS) component. The server side RDS component affected is called the RDS Data Stub, while the client side is called the Data Space control. Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code, or at the very least, cause a denial of service. While this vulnerability affects Internet Explorer 6, Windows XP users are not at risk.

Technologies Affected

  • Microsoft Data Access Components (MDAC) 2.1
  • Microsoft Data Access Components (MDAC) 2.5
  • Microsoft Data Access Components (MDAC) 2.6
  • Microsoft Internet Explorer 5.0.1
  • Microsoft Internet Explorer 5.0.1 SP1
  • Microsoft Internet Explorer 5.0.1 SP2
  • Microsoft Internet Explorer 5.5
  • Microsoft Internet Explorer 5.5 SP1
  • Microsoft Internet Explorer 5.5 SP2
  • Microsoft Internet Explorer 6.0
  • Microsoft Internet Explorer 6.0 SP1

Recommendations

Block external access at the network boundary, unless external parties require service.

Do not permit external access to web services unless they are explicitly required by external users.

Run all software as a nonprivileged user with minimal access rights.

Do not run Internet Explorer as a user with greater privileges than required.

Run all software as a nonprivileged user with minimal access rights.

Running IIS as an unprivileged user will limit the consequences of successful exploitation.

Do not accept communications that originate from unknown or untrusted sources.

Do not visit unknown or untrusted websites from critical systems. Do not open HTML email from unknown or untrusted users.
Microsoft has released a fix:

Credits

The discovery of this vulnerability is credited to Foundstone Research Labs.
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.
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