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  3. Macromedia JRun IIS ISAPI Filter GET Request Buffer Overrun Vulnerability

Macromedia JRun IIS ISAPI Filter GET Request Buffer Overrun Vulnerability

Risk

High

Date Discovered

November 7, 2002

Description

The Macromedia JRun IIS ISAPI handler is prone to a remotely exploitable buffer overrun condition. The issue is due to a lack of bounds checking on requested filenames. It is possible to trigger the overrun if a filename of excessive length is requested. This vulnerability has been reported to affect Microsoft Windows operating systems. Other platforms may not be affected by this issue.

Technologies Affected

  • Macromedia ColdFusion Server MX 6.0.0
  • Macromedia JRun 3.0.0
  • Macromedia JRun 3.1.0
  • Macromedia JRun 4.0.0

Recommendations

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

If appropriate, block external access to the server at the network boundary. Filter untrusted or malicious network traffic at border routers and network firewalls.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.

Deploy network intrusion detection systems (NIDS). Audit NIDS and webserver logs for signs of malicious network activity.

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

Running the server with the least privileges required will reduce the consequences of successful exploitation.

Implement multiple redundant layers of security.

Deploy network intrusion detection systems (NIDS). Audit NIDS and webserver logs for signs of malicious network activity.
Macromedia has released an updater for customers using affected ColdFusion MX releases. Additionally, Macromedia has released patches to address this issue.

Credits

Discovered by Riley Hassell of eEye Digital Security.
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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