CVE-2002-0419 : Detail

CVE-2002-0419

A01-Broken Access Control
23.43%V4
Network
2002-06-11
02h00 +00:00
2016-10-17
11h57 +00:00
CVE.org
NVD
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CVE 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.

CVE Informations

Related Weaknesses

CWE-ID Weakness Name Source
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Metrics

Metrics Score Severity CVSS Vector Source
V2 5 AV:N/AC:L/Au:N/C:P/I:N/A:N nvd@nist.gov

EPSS

EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.

EPSS Score

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

EPSS Percentile

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
EPSS First.org

Exploit information

Exploit Database EDB-ID : 21313

Publication date : 2002-03-04 23h00 +00:00
Author : David Litchfield
EDB Verified : Yes

source: https://www.securityfocus.com/bid/4235/info Microsoft IIS supports Basic and NTLM authentication. Reportedly, the authentication methods supported by a given IIS server can be revealed to an attacker through the inspection of returned error messages, even when anonymous access is also granted. When a valid authentication request is submitted for either message with an invalid username and password, an error message will be returned. This happens even if anonymous access to the requested resource is allowed. An attacker may be able to use this information to launch further intelligent attacks against the server, or to launch a brute-force password attack against a known username. GET / HTTP/1.1 Host: iis-server Authorization: Basic cTFraTk6ZDA5a2xt GET / HTTP/1.1 Host: iis-server Authorization: Negotiate TlRMTVNTUAABAAAAB4IAoAAAAAAAAAAAAAAAAAAAAAA=

Products Mentioned

Configuraton 0

Microsoft>>Internet_information_server >> Version 4.0

Microsoft>>Internet_information_server >> Version 4.0

Microsoft>>Internet_information_services >> Version 5.0

References

http://www.securityfocus.com/bid/4235
Tags : vdb-entry, x_refsource_BID
http://marc.info/?l=bugtraq&m=101535399100534&w=2
Tags : mailing-list, x_refsource_BUGTRAQ