Microsoft Windows 95/98/NT 4.0/2000 IP Fragmentation Jolt2 resource management

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k1.17

Summaryinfo

A vulnerability was found in Microsoft Windows 95/98/NT 4.0/2000. It has been rated as problematic. Affected is an unknown function of the component IP Fragmentation Handler. The manipulation leads to resource management (Jolt2). This vulnerability is referenced as CVE-2000-0305. Remote exploitation of the attack is possible. Furthermore, an exploit is available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability was found in Microsoft Windows 95/98/NT 4.0/2000 (Operating System) and classified as critical. This issue affects an unknown function of the component IP Fragmentation Handler. The manipulation with an unknown input leads to a resource management vulnerability (Jolt2). Using CWE to declare the problem leads to CWE-399. Impacted is availability. The summary by CVE is:

Windows 95, Windows 98, Windows 2000, Windows NT 4.0, and Terminal Server systems allow a remote attacker to cause a denial of service by sending a large number of identical fragmented IP packets, aka jolt2 or the "IP Fragment Reassembly" vulnerability.

The issue has been introduced in 08/24/1995. The weakness was published 05/19/2000 by BindView with Microsoft as MS00-029 as confirmed bulletin (Technet). It is possible to read the advisory at microsoft.com. The identification of this vulnerability is CVE-2000-0305. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are unknown but a public exploit is available.

The exploit is available at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1730 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 10433 (MS00-029: NT IP Fragment Reassembly Patch Not Applied (jolt2) (259728)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 90165 (Microsoft Windows IP Fragment Reassembly Vulnerability (MS00-029)).

Applying the patch MS00-029 is able to eliminate this problem. The bugfix is ready for download at microsoft.com. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (4518), Exploit-DB (214), Tenable (10433), SecurityFocus (BID 1236†) and OSVDB (335†). Be aware that VulDB is the high quality source for vulnerability data.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.7

VulDB Base Score: 7.5
VulDB Temp Score: 6.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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Exploitinginfo

Name: Jolt2
Class: Resource management / Jolt2
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

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Nessus ID: 10433
Nessus Name: MS00-029: NT IP Fragment Reassembly Patch Not Applied (jolt2) (259728)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Patch: MS00-029
McAfee IPS: 🔍
McAfee IPS Version: 🔍

ISS Proventia IPS: 🔍

Timelineinfo

08/24/1995 🔍
05/19/2000 +1730 days 🔍
05/19/2000 +0 days 🔍
05/19/2000 +0 days 🔍
05/19/2000 +0 days 🔍
05/19/2000 +0 days 🔍
05/31/2000 +12 days 🔍
09/12/2002 +834 days 🔍
10/15/2002 +32 days 🔍
06/24/2014 +4270 days 🔍
10/16/2025 +4132 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS00-029
Researcher: BindView
Organization: Microsoft
Status: Confirmed

CVE: CVE-2000-0305 (🔍)
GCVE (CVE): GCVE-0-2000-0305
GCVE (VulDB): GCVE-100-15575
X-Force: 4518
SecurityFocus: 1236 - Multiple Vendor Fragmented IP Packets DoS Vulnerability
OSVDB: 335 - Microsoft Windows Fragmented IP Packet Saturation DoS (jolt2)
Vulnerability Center: 119 - [MS00-029] DoS in Windows 95/98/2000/NT via Mulitple Fragmented IP Packets, High

scip Labs: https://www.scip.ch/en/?labs.20140213

Entryinfo

Created: 06/24/2014 17:56
Updated: 10/16/2025 17:14
Changes: 06/24/2014 17:56 (75), 05/05/2019 07:01 (10), 02/19/2025 04:54 (15), 10/16/2025 17:14 (2)
Complete: 🔍
Cache ID: 216::103

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