Microsoft Windows 95/NT 4.0 TCP SYN Teardrop2 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-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Microsoft Windows 95/NT 4.0. Impacted is an unknown function of the component TCP SYN Handler. This manipulation causes denial of service (Teardrop2). This vulnerability is handled as CVE-1999-0104. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Microsoft Windows 95/NT 4.0 (Operating System). Affected by this vulnerability is some unknown processing of the component TCP SYN Handler. The manipulation with an unknown input leads to a denial of service vulnerability (Teardrop2). The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. The summary by CVE is:

A later variation on the Teardrop IP denial of service attack, a.k.a. Teardrop-2.

The issue has been introduced in 08/24/1995. The weakness was released 12/16/1997 (Website). The advisory is shared at oval.mitre.org. This vulnerability is known as CVE-1999-0104. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 845 days. During that time the estimated underground price was around $5k-$25k.

Upgrading to version 98 or 2000 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (343), SecurityFocus (BID 80175†) and Vulnerability Center (SBV-686†). Entries connected to this vulnerability are available at VDB-14042 and VDB-14040. Several companies clearly confirm that VulDB is the primary source for best 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: 5.3
VulDB Meta Temp Score: 5.1

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

CVSSv2info

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

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

NVD Base Score: 🔍

Exploitinginfo

Name: Teardrop2
Class: Denial of service / Teardrop2
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-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Windows 98/2000
ISS Proventia IPS: 🔍

Timelineinfo

08/24/1995 🔍
12/16/1997 +845 days 🔍
12/16/1997 +0 days 🔍
12/16/1997 +0 days 🔍
12/16/1997 +0 days 🔍
01/22/2003 +1863 days 🔍
06/18/2014 +4165 days 🔍
04/17/2026 +4321 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: oval.mitre.org
Status: Confirmed

CVE: CVE-1999-0104 (🔍)
GCVE (CVE): GCVE-0-1999-0104
GCVE (VulDB): GCVE-100-14041

OVAL: 🔍

X-Force: 343
SecurityFocus: 80175 - Openlinux\SunOS\Windows NT\HP-UX Denial of Service Vulnerability
Vulnerability Center: 686 - CVE Id, Medium

See also: 🔍

Entryinfo

Created: 06/18/2014 17:45
Updated: 04/17/2026 04:57
Changes: 06/18/2014 17:45 (65), 05/08/2019 09:36 (2), 04/17/2026 04:57 (19)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Interested in the pricing of exploits?

See the underground prices here!