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  3. Microsoft Office FlashPix Image Converter (CVE-2010-3951) Buffer Overflow Vulnerability

Microsoft Office FlashPix Image Converter (CVE-2010-3951) Buffer Overflow Vulnerability

Risk

High

Date Discovered

December 14, 2010

Description

Microsoft Office is prone to a remote buffer-overflow vulnerability because the software fails to perform adequate boundary-checks on user-supplied data. An attacker can exploit this issue by enticing an unsuspecting user into opening an Office document that contains a specially crafted FlashPix image. Successfully exploiting this issue allows attackers to execute arbitrary code in the context of the currently logged-in user. Failed exploit attempts will result in a denial-of-service condition.

Technologies Affected

  • Microsoft Office Converter Pack
  • Microsoft Office XP
  • Microsoft Office XP SP1
  • Microsoft Office XP SP2
  • Microsoft Office XP SP3

Recommendations

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

To mitigate the impact of a successful exploit, run the affected application as a user with minimal access rights.

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

Deploy NIDS to monitor network traffic for signs of anomalous or suspicious activity. This includes but is not limited to requests that include NOP sleds and unexplained incoming and outgoing traffic. This may indicate exploitation attempts or activity that results from successful exploitation.

Do not accept or execute files from untrusted or unknown sources.

Never accept files from untrusted or unknown sources, because they may be malicious in nature. Avoid opening email attachments from unknown or questionable sources.

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

Do not accept or preview emails that come from unknown or unsolicited locations.

Implement multiple redundant layers of security.

Since this issue may be leveraged to execute code, we recommend memory-protection schemes, such as nonexecutable stack/heap configurations and randomly mapped memory segments. This tactic may complicate exploit attempts of memory-corruption vulnerabilities.
The vendor has released an advisory and updates. Please see the references for more information.

Credits

Dyon Balding of Secunia Research.
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.
Symantec, Symantec products, Symantec Security Response, and secure@symantec.com are registered trademarks of Symantec Corp. and/or affiliated companies in the United States and other countries. All other registered and unregistered trademarks represented in this document are the sole property of their respective companies/owners.

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