VDB-15125 · CVE-1999-1043 · MS98-007

Microsoft Exchange 5.0/5.5 NNTP/SMTP denial of service

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.
5.1	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Microsoft Exchange 5.0/5.5. It has been classified as problematic. Affected by this vulnerability is an unknown functionality of the component NNTP/SMTP Handler. The manipulation leads to denial of service. This vulnerability is referenced as CVE-1999-1043. No exploit is available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability was found in Microsoft Exchange 5.0/5.5 (Groupware Software) and classified as problematic. This issue affects an unknown code block of the component NNTP/SMTP Handler. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. The summary by CVE is:

Microsoft Exchange Server 5.5 and 5.0 does not properly handle (1) malformed NNTP data, or (2) malformed SMTP data, which allows remote attackers to cause a denial of service (application error).

The weakness was published 12/31/1999 as MS98-007 as confirmed bulletin (Technet). The advisory is shared at microsoft.com. The identification of this vulnerability is CVE-1999-1043. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

Applying the patch MS98-007 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 (1223) and Vulnerability Center (SBV-4286†). Similar entry is available at VDB-16493. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Groupware Software

Vendor

Microsoft

Name

Exchange

Version

License

commercial

Website

Vendor: https://www.microsoft.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: MS98-007
McAfee IPS: 🔍
McAfee IPS Version: 🔍

ISS Proventia IPS: 🔍

Timelineinfo

07/24/1998 🔍
12/31/1999 +525 days 🔍
12/31/1999 +0 days 🔍
05/10/2004 +1592 days 🔍
06/22/2014 +3695 days 🔍
04/20/2026 +4320 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS98-007
Status: Confirmed

CVE: CVE-1999-1043 (🔍)
GCVE (CVE): GCVE-0-1999-1043
GCVE (VulDB): GCVE-100-15125
X-Force: 1223
Vulnerability Center: 4286 - [MS98-007] DoS in Microsoft Exchange Server due to Wrong Handling of Malformed NNTP or SMTP Data, High

See also: 🔍

Entryinfo

Created: 06/22/2014 16:46
Updated: 04/20/2026 03:31
Changes: 06/22/2014 16:46 (60), 05/21/2019 16:08 (2), 04/20/2026 03:31 (16)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.