Used Microsoft Exchange 2000 Malformed Mail Attribute can Cause Exchange 2000 to Exhaust CPU Resources for Windows?


Microsoft Exchange 2000 Malformed Mail Attribute can Cause Exchange 2000 to Exhaust CPU Resources Analysis

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Microsoft Exchange 2000 Malformed Mail Attribute Can Cause Exchange 2000 to Exhaust CPU Resources is a free utility designed to address a specific issue within the Exchange 2000 environment. This program targets a flaw that can lead to excessive CPU resource consumption due to malformed mail attributes. By focusing on this issue, it aims to enhance system performance and stability, ensuring that Exchange servers run efficiently without unnecessary strain on resources.

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The tool operates seamlessly on the Windows platform and is particularly beneficial for organizations utilizing ExchangeIt provides a straightforward solution to prevent potential disruptions caused by malformed email attributes. This program is part of a broader category of encryption software, contributing to the security and reliability of email communications within the Exchange framework.


Used Microsoft Exchange 2000 Malformed Mail Attribute can Cause Exchange 2000 to Exhaust CPU Resources for Windows?


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Full Specifications

GENERAL
Release
Latest update
Version
Q320436
OPERATING SYSTEMS
Platform
Windows
Operating System
  • Windows 10
  • Windows 2000
  • Windows NT
Additional Requirements
Microsoft Exchange 2000 SP2
POPULARITY
Total Downloads
111
Downloads Last Week
1

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Program available in other languages


Last Updated


Developer’s Description

Security Update
To support the exchange of mail with heterogeneous systems, Exchange messages use the attributes of SMTP mail messages that are specified by RFC's 821 and 822. There is a flaw in the way Exchange 2000 handles certain malformed RFC message attributes on received mail. Upon receiving a message containing such a malformation, the flaw causes the Store service to consume 100% of the available CPU in processing the message.

A security vulnerability results because it is possible for an attacker to seek to exploit this flaw and mount a denial of service attack. An attacker could attempt to levy an attack by connecting directly to the Exchange server and passing a raw, hand-crafted mail message with a specially malformed attribute. When the message was received and processed by the Store service, the CPU would spike to 100%. The effects of the attack would last as long as it took for the Exchange Store service to process the message. Neither restarting the service nor rebooting the server would remedy the denial of service.


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Content created and reviewed by Softonic with information obtained from Microsoft, using AI.

CNET's editorial team was not involved in the creation of this content. Opinions, analysis and reviews were not provided by CNET.