Icon of program: Microsoft Internet Inform…

Microsoft Internet Information Server 4.0 for Windows

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Used Microsoft Internet Information Server 4.0 for Windows?

Editors’ Review

Download.com staff
This security patch addresses a vulnerability in Internet Information Server (IIS) where malformed chunked encoding requests could cause service failure due to excessive memory usage.

  • Pros

    • Fixes memory exhaustion vulnerability
    • Protects against repetitive attack vectors
    • Enhances IIS service stability
    • Secures handling of chunked encoding

  • Cons

    • Requires debug symbol files for advanced diagnostics
    • Patch specifically targets chunked encoding requests
Icon of program: Microsoft Internet Inform…

Microsoft Internet Information Server 4.0 for Windows

Download now

Used Microsoft Internet Information Server 4.0 for Windows?

Explore More

Full Specifications

GENERAL
Release
Latest update
Version
4.2.739.1
OPERATING SYSTEMS
Platform
Windows
Operating System
  • Windows 10
  • Windows 2000
  • Windows NT
Additional Requirements
Windows NT/2000 Microsoft Internet Information Server 4.0
POPULARITY
Total Downloads
42,505
Downloads Last Week
5
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Developer’s Description

By Microsoft
Chunked encoding post vulnerability security patch
A repetitive attack using a specially malformed request may cause Internet Information Server (IIS) to use a large amount of memory, and eventually cause the service to fail. This problem can occur when the client uses the Transfer-Encoding: chunked header in its request.

NOTE: Debug symbol files are required by an administrator to do both kernel and user mode debugging, providing a method to resolve global variables and function names in the loaded executable file.

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