eEye Digital Security eEye Digital Security
  • Login to the eEye Business Client Portal
  • Shop for eEye Products
  • Read the eEye Blog
  • Subscribe to eEye RSS Feeds
  • Follow eEye on Twitter
  • Follow eEye of Facebook
Resources

Research > Zero-Day Tracker > 20071019

RealNetworks RealPlayer ierpplug.dll Remote Code Execution

Date Disclosed:
10/19/2007

Date Patched:
10.20.2007

Vendor:
RealNetworks

Affected Software:
RealPlayer 10.5
RealPlayer 11BETA

Description:
A zero-day vulnerability has been disclosed within a RealPlayer ActiveX control (ierpplug.dll). By passing in malicious parameters into this ActiveX control, an attacker would be able to leverage a buffer overflow vulnerability within the control to execute arbitrary code under the context of the logged in user. Although exploit code has not been released for this vulnerability, exploits have been seen in-the-wild.

Severity:
High

Code Execution:
Yes

Impact:
Arbitrary code execution under the context of the logged in user
ActiveX remote code execution vulnerabilities have very high impacts since the source of the malicious payload can be any site on the Internet. An even more critical problem is generated when clients are administrators on their local hosts, which would run the malicious payload with Administrator credentials.

Mitigation:
The best form of mitigation is available by kill-bitting the CLSID for the ierpplug.dll ActiveX Control (FDC7A535-4070-4B92-A0EA-D9994BCC0DC5) following the directions of KB240797. This will disable calls to the ActiveX control from web pages, thereby mitigating these specific vulnerabilities.

Protection:
eEye's Blink® Personal Edition protects from this vulnerability.
eEye's Blink® Professional Edition protects from this vulnerability.
eEye's Retina® Network Security Scanner scans devices to detect for this vulnerability.

Patch:
Vendor Advisory: RealPlayer Security Vulnerability

Links:
Original Vulnerability Information Released
Preview Vulnerability In Same ActiveX

Status:
10/19/2007: Vulnerability Information Publicly Released

Copyright ©1998-2011 eEye Digital Security
Permission is hereby granted for the redistribution of this alert electronically. It is not to be edited in any way without express consent of eEye. If you wish to reprint the whole or any part of this alert in any other medium excluding electronic medium, please email alert@eEye.com for permission.

Disclaimer
The information within this paper may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are no warranties, implied or express, with regard to this information. In no event shall the author be liable for any direct or indirect damages whatsoever arising out of or in connection with the use or spread of this information. Any use of this information is at the user's own risk.

Next Steps

Free Trial
Test drive an eEye product
On-demand Demo
See an online product tour
One-on-one Demo
Schedule a personalized tour
Compare Products
See side-by-side features
Buy Now
Go to eEye product store
Contact | Site Map | Privacy | Website Feedback | 1.866.339.3732
© 1998 – 2012 eEye Digital Security. All rights reserved.