Microsoft Exchange 2000 Outlook Web Access resource consumption

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
3.8$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Exchange 2000. It has been classified as problematic. This affects an unknown function of the component Outlook Web Access. This manipulation causes resource consumption. This vulnerability is registered as CVE-2001-0666. No exploit is available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability was found in Microsoft Exchange 2000 (Groupware Software). It has been declared as problematic. Affected by this vulnerability is an unknown code block of the component Outlook Web Access. The manipulation with an unknown input leads to a resource consumption vulnerability. The CWE definition for the vulnerability is CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. As an impact it is known to affect availability. The summary by CVE is:

Outlook Web Access (OWA) in Microsoft Exchange 2000 allows an authenticated user to cause a denial of service (CPU consumption) via a malformed OWA request for a deeply nested folder within the user s mailbox.

The weakness was published 10/30/2001 by Joao Gouveia as MS01-049 as confirmed bulletin (Technet). It is possible to read the advisory at microsoft.com. This vulnerability is known as CVE-2001-0666. The exploitation appears to be easy. Attacking locally is a requirement. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 74153 (Microsoft Exchange 2000 OWA Nested Requests Can Consume Server CPU Availability (MS01-049)).

Applying the patch MS01-049 is able to eliminate this problem. The bugfix is ready for download at microsoft.com.

The vulnerability is also documented in the databases at X-Force (7168), SecurityFocus (BID 3368†) and Vulnerability Center (SBV-2843†). Similar entry is available at VDB-17571. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 3.8

VulDB Base Score: 4.0
VulDB Temp Score: 3.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: MS01-049
McAfee IPS: 🔍
McAfee IPS Version: 🔍

Timelineinfo

09/26/2001 🔍
10/30/2001 +34 days 🔍
10/30/2001 +0 days 🔍
10/30/2001 +0 days 🔍
11/13/2003 +744 days 🔍
07/10/2014 +3892 days 🔍
10/05/2025 +4105 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS01-049
Researcher: Joao Gouveia
Status: Confirmed

CVE: CVE-2001-0666 (🔍)
GCVE (CVE): GCVE-0-2001-0666
GCVE (VulDB): GCVE-100-17575
X-Force: 7168
SecurityFocus: 3368 - Microsoft Exchange OWA Server Resource Starvation Vulnerability
Vulnerability Center: 2843 - [MS01-049] Outlook Web Access in Microsoft Exchange 2000 DoS, Medium

See also: 🔍

Entryinfo

Created: 07/10/2014 11:45
Updated: 10/05/2025 12:41
Changes: 07/10/2014 11:45 (63), 05/16/2019 17:19 (3), 10/05/2025 12:41 (18)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to stay up to date on a daily basis?

Enable the mail alert feature now!