Microsoft IIS 4.0/5.0 Double Byte Character Set Source information disclosure

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

Summaryinfo

A vulnerability has been found in Microsoft IIS 4.0/5.0 and classified as critical. Affected by this issue is some unknown functionality of the component Double Byte Character Set Handler. This manipulation causes information disclosure (Source). The identification of this vulnerability is CVE-2000-1090. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Microsoft IIS 4.0/5.0 (Web Server). It has been declared as critical. Affected by this vulnerability is an unknown part of the component Double Byte Character Set Handler. The manipulation with an unknown input leads to a information disclosure vulnerability (Source). The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. The summary by CVE is:

Microsoft IIS for Far East editions 4.0 and 5.0 allows remote attackers to read source code for parsed pages via a malformed URL that uses the lead-byte of a double-byte character.

The weakness was shared 02/12/2001 by NSFOCUS with NSFOCUS Security Team (Website). The advisory is shared at securityfocus.com. This vulnerability is known as CVE-2000-1090. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

Upgrading to version 6.0 eliminates this vulnerability. Applying the patch 4.0 SP6 is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at X-Force (5729) and SecurityFocus (BID 2100†). The entry VDB-16371 is related to this item. 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
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: Source
Class: Information disclosure / Source
CWE: CWE-200 / CWE-284 / CWE-266
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: 🔍

Upgrade: IIS 6.0
Patch: 4.0 SP6

Timelineinfo

12/13/2000 🔍
02/12/2001 +61 days 🔍
02/12/2001 +0 days 🔍
07/03/2014 +4889 days 🔍
04/07/2019 +1739 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: securityfocus.com⛔
Researcher: NSFOCUS
Organization: NSFOCUS Security Team
Status: Not defined

CVE: CVE-2000-1090 (🔍)
GCVE (CVE): GCVE-0-2000-1090
GCVE (VulDB): GCVE-100-16369
X-Force: 5729 - Microsoft IIS Far East editions file disclosure
SecurityFocus: 2100 - Microsoft IIS Far East Edition DBCS File Disclosure Vulnerability

See also: 🔍

Entryinfo

Created: 07/03/2014 10:21
Updated: 04/07/2019 12:49
Changes: 07/03/2014 10:21 (45), 04/07/2019 12:49 (16)
Complete: 🔍
Cache ID: 216::103

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

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