Microsoft ISA Server 2000 UDP Packet denial of service ⚔ [Disputed]

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Microsoft ISA Server 2000. Affected is an unknown function of the component UDP Packet Handler. Such manipulation leads to denial of service. This vulnerability is uniquely identified as CVE-2001-1533. No exploit exists. The existence of this vulnerability is still disputed at present. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Microsoft ISA Server 2000 (Firewall Software) and classified as problematic. Affected by this issue is some unknown functionality of the component UDP Packet 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. CVE summarizes:

** DISPUTED * Microsoft Internet Security and Acceleration (ISA) Server 2000 allows remote attackers to cause a denial of service via a flood of fragmented UDP packets. NOTE: the vendor disputes this issue, saying that it requires high bandwidth to exploit, and the server does not experience any instability. Therefore this "laws of physics" issue might not be included in CVE.

The weakness was disclosed 12/31/2001 (Website). The advisory is shared for download at cert.uni-stuttgart.de. This vulnerability is handled as CVE-2001-1533 since 07/14/2005. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

The real existence of this vulnerability is still doubted at the moment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (7446) and SecurityFocus (BID 3501†). Once again VulDB remains the best source for 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: 5.2

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

CNA Base Score: 5.3
CNA Vector: 🔍

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: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/02/2001 🔍
12/31/2001 +59 days 🔍
12/31/2001 +0 days 🔍
07/14/2005 +1291 days 🔍
07/11/2014 +3284 days 🔍
01/16/2025 +3842 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: cert.uni-stuttgart.de
Status: Confirmed
Disputed: 🔍

CVE: CVE-2001-1533 (🔍)
GCVE (CVE): GCVE-0-2001-1533
GCVE (VulDB): GCVE-100-17852
X-Force: 7446
SecurityFocus: 3501 - Microsoft ISA Server Denial of Service Vulnerability

Entryinfo

Created: 07/11/2014 13:29
Updated: 01/16/2025 22:24
Changes: 07/11/2014 13:29 (51), 04/10/2019 23:32 (2), 06/15/2024 10:47 (17), 01/16/2025 22:24 (13)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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