Microsoft IIS 4.0 FTP Server PASV denial of service

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft IIS 4.0. It has been rated as problematic. Impacted is an unknown function of the component FTP Server. Performing a manipulation of the argument PASV results in denial of service. This vulnerability is identified as CVE-1999-1148. There is not any exploit available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Microsoft IIS 4.0 (Web Server). This affects an unknown function of the component FTP Server. The manipulation of the argument PASV with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. The summary by CVE is:

FTP service in IIS 4.0 and earlier allows remote attackers to cause a denial of service (resource exhaustion) via many passive (PASV) connections at the same time.

The weakness was released 12/31/1999 as MS98-006 as confirmed bulletin (Technet). The advisory is shared at technet.microsoft.com. This vulnerability is uniquely identified as CVE-1999-1148. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

Applying the patch MS98-006 is able to eliminate this problem. The bugfix is ready for download at technet.microsoft.com.

The vulnerability is also documented in the databases at X-Force (1215) and Vulnerability Center (SBV-4277†). Further details are available at support.microsoft.com. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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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

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: MS98-006

Timelineinfo

07/23/1998 🔍
12/31/1999 +526 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: MS98-006
Status: Confirmed

CVE: CVE-1999-1148 (🔍)
GCVE (CVE): GCVE-0-1999-1148
GCVE (VulDB): GCVE-100-15141
X-Force: 1215 - Microsoft IIS Passive FTP patch not applied
Vulnerability Center: 4277 - [MS98-006] DoS in Microsoft IIS FTP Service via Multiple PASV FTP Connections, Medium

Misc.: 🔍

Entryinfo

Created: 06/22/2014 16:59
Updated: 04/20/2026 04:03
Changes: 06/22/2014 16:59 (44), 05/21/2019 14:47 (18), 04/20/2026 04:03 (16)
Complete: 🔍
Cache ID: 216::103

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