// For flags

CVE-2002-0419

Microsoft IIS 4.0/5.0/5.1 - Authentication Method Disclosure

Severity Score

5.0
*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

2
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Information leaks in IIS 4 through 5.1 allow remote attackers to obtain potentially sensitive information or more easily conduct brute force attacks via responses from the server in which (2) in certain configurations, the server IP address is provided as the realm for Basic authentication, which could reveal real IP addresses that were obscured by NAT, or (3) when NTLM authentication is used, the NetBIOS name of the server and its Windows NT domain are revealed in response to an Authorization request. NOTE: this entry originally contained a vector (1) in which the server reveals whether it supports Basic or NTLM authentication through 401 Access Denied error messages. CVE has REJECTED this vector; it is not a vulnerability because the information is already available through legitimate use, since authentication cannot proceed without specifying a scheme that is supported by both the client and the server.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2002-03-05 First Exploit
  • 2002-06-07 CVE Reserved
  • 2002-06-11 CVE Published
  • 2024-05-11 EPSS Updated
  • 2024-08-08 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Microsoft
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Internet Information Server
Search vendor "Microsoft" for product "Internet Information Server"
4.0
Search vendor "Microsoft" for product "Internet Information Server" and version "4.0"
-
Affected
Microsoft
Search vendor "Microsoft"
Internet Information Server
Search vendor "Microsoft" for product "Internet Information Server"
4.0
Search vendor "Microsoft" for product "Internet Information Server" and version "4.0"
alpha
Affected
Microsoft
Search vendor "Microsoft"
Internet Information Services
Search vendor "Microsoft" for product "Internet Information Services"
5.0
Search vendor "Microsoft" for product "Internet Information Services" and version "5.0"
-
Affected