Microsoft Internet Explorer PNG inflate_fast() buffer overflow

ie-png-inflate-bo (10662) The risk level is classified as HighHigh Risk


Microsoft Internet Explorer is vulnerable to a heap buffer overflow, caused by improper validation of PNG (Portable Network Graphics) image input data stream length codes by the inflate_fast() function in the pngfilt.dll file. By hosting a malformed PNG image on a Web page, a remote attacker could overflow a buffer and cause a victim's Web browser to crash or execute arbitrary code on the victim's computer, once the malicious PNG image is processed.


Gain Access


Apply the appropriate patch for your system, as listed in the latest Microsoft Security Bulletin. See References.

— OR —

Use Microsoft Automatic Update if it is supported by your operating system. The original bulletin issued by Microsoft has been superseded.


Platforms Affected:

  • Microsoft Internet Explorer 5.01
  • Microsoft Internet Explorer 5.5
  • Microsoft Internet Explorer 6.0


Nov 20, 2002

The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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