Microsoft IIS 4.0/5.0 ISAPI Extension Source information disclosure
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
5.1 | $0-$5k | 0.00 |
A vulnerability was found in Microsoft IIS 4.0/5.0 (Web Server). It has been rated as problematic. Affected by this issue is some unknown functionality of the component ISAPI Extension Handler. The manipulation with an unknown input leads to a information disclosure vulnerability (Source). Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. CVE summarizes:
IIS 4.0 and 5.0 does not properly perform ISAPI extension processing if a virtual directory is mapped to a UNC share, which allows remote attackers to read the source code of ASP and other files, aka the "Virtualized UNC Share" vulnerability.
The weakness was released 03/30/2000 with Microsoft as MS00-019 as confirmed bulletin (Technet). The advisory is shared for download at microsoft.com. This vulnerability is handled as CVE-2000-0246. 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 MITRE ATT&CK project declares the attack technique as T1592.
The vulnerability scanner Nessus provides a plugin with the ID 11443 (MS00-019: Microsoft IIS ISAPI Virtual Directory UNC Mapping ASP Source Disclosure (uncredentialed check)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Web Servers and running in the context r.
Applying the patch MS00-019 is able to eliminate this problem. The bugfix is ready for download at microsoft.com. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 8519.
The vulnerability is also documented in the databases at X-Force (4204) and Tenable (11443).
Product
Type
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.3VulDB Meta Temp Score: 5.1
VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
AV | AC | Au | C | I | A |
---|---|---|---|---|---|
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Name: SourceClass: Information disclosure / Source
CWE: CWE-200 / CWE-284 / CWE-266
ATT&CK: T1592
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Today | unlock | unlock | unlock | unlock |
Nessus ID: 11443
Nessus Name: MS00-019: Microsoft IIS ISAPI Virtual Directory UNC Mapping ASP Source Disclosure (uncredentialed check)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
OpenVAS ID: 11443
OpenVAS Name: Microsoft IIS UNC Mapped Virtual Host Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: PatchStatus: 🔍
0-Day Time: 🔍
Patch: MS00-019
TippingPoint: 🔍
McAfee IPS: 🔍
McAfee IPS Version: 🔍
ISS Proventia IPS: 🔍
Timeline
03/30/2000 🔍03/30/2000 🔍
03/30/2000 🔍
03/30/2000 🔍
02/02/2003 🔍
03/23/2003 🔍
06/23/2014 🔍
10/08/2020 🔍
Sources
Vendor: microsoft.comAdvisory: MS00-019
Researcher: Discovered by Adam Coyne
Organization: Microsoft
Status: Confirmed
CVE: CVE-2000-0246 (🔍)
X-Force: 4204
Vulnerability Center: 779 - [MS00-019] Microsoft IIS UNC Mapped Virtual Host Vulnerability, Medium
SecurityFocus: 1081 - Microsoft IIS UNC Mapped Virtual Host Vulnerability
Entry
Created: 06/24/2014 01:00Updated: 10/08/2020 16:32
Changes: 06/24/2014 01:00 (80), 10/08/2020 16:32 (1)
Complete: 🔍
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