Microsoft Windows 98/NT 4.0 IP Source Routing access control

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Microsoft Windows 98/NT 4.0. Affected is an unknown function of the component IP Source Routing Handler. The manipulation leads to access control. This vulnerability is traded as CVE-1999-0909. There is no exploit available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability was found in Microsoft Windows 98/NT 4.0 (Operating System). It has been rated as critical. This issue affects some unknown functionality of the component IP Source Routing Handler. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Multihomed Windows systems allow a remote attacker to bypass IP source routing restrictions via a malformed packet with IP options, aka the "Spoofed Route Pointer" vulnerability.

The issue has been introduced in 08/24/1996. The weakness was shared 09/20/1999 with Network Associates as MS99-038 as confirmed bulletin (Technet). The advisory is shared at microsoft.com. The identification of this vulnerability is CVE-1999-0909. 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. MITRE ATT&CK project uses the attack technique T1068 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 1122 days. During that time the estimated underground price was around $25k-$100k.

Upgrading to version ME, XP or 2000 eliminates this vulnerability. Applying the patch MS99-038 is able to eliminate this problem. The bugfix is ready for download at microsoft.com. The best possible mitigation is suggested to be patching the affected component. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 35.

The vulnerability is also documented in the databases at X-Force (3577), SecurityFocus (BID 646†) and Vulnerability Center (SBV-740†). The entry VDB-14848 is related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
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: Access control
CWE: CWE-264
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: 🔍

Upgrade: Windows ME/XP/2000
Patch: MS99-038
TippingPoint: 🔍
SourceFire IPS: 🔍
ISS Proventia IPS: 🔍

Timelineinfo

08/24/1996 🔍
09/20/1999 +1122 days 🔍
09/20/1999 +0 days 🔍
09/20/1999 +0 days 🔍
09/20/1999 +0 days 🔍
01/27/2003 +1225 days 🔍
06/21/2014 +4163 days 🔍
04/19/2026 +4320 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS99-038
Organization: Network Associates
Status: Confirmed

CVE: CVE-1999-0909 (🔍)
GCVE (CVE): GCVE-0-1999-0909
GCVE (VulDB): GCVE-100-14849
X-Force: 3577
SecurityFocus: 646 - Microsoft Windows IP Source Routing Vulnerability
Vulnerability Center: 740 - [MS99-038] Microsoft Windows Bypassing of IP Source Routing Restrictions, High

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

Entryinfo

Created: 06/22/2014 01:19
Updated: 04/19/2026 12:12
Changes: 06/22/2014 01:19 (69), 05/08/2019 14:19 (1), 04/19/2026 12:12 (16)
Complete: 🔍
Cache ID: 216::103

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

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