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  3. Microsoft Internet Explorer COM Object Instantiation Memory Corruption Vulnerability

Microsoft Internet Explorer COM Object Instantiation Memory Corruption Vulnerability

Risk

High

Date Discovered

December 13, 2005

Description

Microsoft Internet Explorer is prone to a memory corruption vulnerability that is related to the instantiation of COM objects. COM objects may corrupt system memory and facilitate arbitrary code execution in the context of the currently logged in user on the affected computer.

Technologies Affected

  • Avaya DefinityOne Media Servers
  • Avaya DefinityOne Media Servers R10
  • Avaya DefinityOne Media Servers R11
  • Avaya DefinityOne Media Servers R12
  • Avaya DefinityOne Media Servers R6
  • Avaya DefinityOne Media Servers R7
  • Avaya DefinityOne Media Servers R8
  • Avaya DefinityOne Media Servers R9
  • Avaya IP600 Media Servers
  • Avaya IP600 Media Servers R10
  • Avaya IP600 Media Servers R11
  • Avaya IP600 Media Servers R12
  • Avaya IP600 Media Servers R6
  • Avaya IP600 Media Servers R7
  • Avaya IP600 Media Servers R8
  • Avaya IP600 Media Servers R9
  • Avaya Modular Messaging (MAS)
  • Avaya S8100 Media Servers
  • Avaya S8100 Media Servers R10
  • Avaya S8100 Media Servers R11
  • Avaya S8100 Media Servers R12
  • Avaya S8100 Media Servers R6
  • Avaya S8100 Media Servers R7
  • Avaya S8100 Media Servers R8
  • Avaya S8100 Media Servers R9
  • Avaya Unified Communications Center S3400
  • Microsoft Internet Explorer 5.0.1
  • Microsoft Internet Explorer 5.0.1 SP1
  • Microsoft Internet Explorer 5.0.1 SP2
  • Microsoft Internet Explorer 5.0.1 SP3
  • Microsoft Internet Explorer 5.0.1 SP4
  • Microsoft Internet Explorer 5.0.1 Sp1
  • Microsoft Internet Explorer 5.0.1 Sp2
  • Microsoft Internet Explorer 5.0.1 Sp3
  • Microsoft Internet Explorer 5.0.1 Sp4
  • 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

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

All non-administrative tasks, such as browsing the Web and reading email, should be performed as an unprivileged user with minimal access rights.

Do not follow links provided by unknown or untrusted sources.

Users should avoid visiting Web sites of questionable integrity or following links provided by unfamiliar or untrusted sources.

Set web browser security to disable the execution of script code or active content.

Disabling scripting and active content in the Internet Zone may limit exposure to this and other vulnerabilities.

Implement multiple redundant layers of security.

As an added precaution, memory protection schemes such as non-executable stack/heap configuration and randomly mapped memory segments that may complicate exploitation of memory corruption vulnerabilities should be deployed.
Microsoft has released fixes for supported operating system versions. Fixes for Internet Explorer 5.5 SP 2 running on Windows ME and Internet Explorer 6 SP 1 running on Windows 98/98SE/ME can be obtained through the Microsoft Update Web site or the Windows Update Web site. Avaya has released advisory ASA-2005-234 detailing affected Avaya products. Please see the referenced advisory for further information.

Credits

Discovery is credited to Will Dormann of CERT/CC.
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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