CVE-2000-0649

Microsoft IIS 2.0/3.0/4.0/5.0/5.1 - Internal IP Address Disclosure

Severity Score

2.6

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

IIS 4.0 allows remote attackers to obtain the internal IP address of the server via an HTTP 1.0 request for a web page which is protected by basic authentication and has no realm defined.

Collect any leaked internal IPs by requesting commonly redirected locations from IIS. CVE-2000-0649 references IIS 5.1 (win2k, XP) and older. However, in newer servers such as IIS 7+, this occurs when the alternateHostName is not set or misconfigured. Also collects internal IPs leaked from the PROPFIND method in certain IIS versions.

*Credits: N/A

CVSS Scores

NISTv2 2.6

Attack Vector

Network

Attack Complexity

High

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2000-07-13 CVE Published
2000-07-13 First Exploit
2000-08-02 CVE Reserved
2023-03-08 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

References (8)

URL	Tag	Source
https://support.microsoft.com/en-us/help/218180/internet-information-server-returns-ip-address-in-http-header-content
https://support.microsoft.com/en-us/topic/fix-the-internal-ip-address-of-an-iis-7-0-server-is-revealed-if-an-http-request-that-does-not-have-a-host-header-or-has-a-null-host-header-is-sent-to-the-server-c493e9bc-dfd3-0d9b-941c-b2d93a957d9e
https://techcommunity.microsoft.com/t5/iis-support-blog/iis-web-servers-running-in-windows-azure-may-reveal-their/ba-p/826500

URL	Date	SRC
https://www.exploit-db.com/exploits/20096	2000-07-13
https://github.com/rafaelh/CVE-2000-0649	2024-04-01
https://github.com/Downgraderz/PoC-CVE-2000-0649	2024-06-18
http://archives.neohapsis.com/archives/ntbugtraq/2000-q3/0025.html	2024-08-08
http://www.securityfocus.com/bid/1499	2024-08-08

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Microsoft Search vendor "Microsoft"		Internet Information Server Search vendor "Microsoft" for product "Internet Information Server"				3.0 Search vendor "Microsoft" for product "Internet Information Server" and version "3.0"		-		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"		-		Affected
Microsoft Search vendor "Microsoft"		Internet Information Services Search vendor "Microsoft" for product "Internet Information Services"				2.0 Search vendor "Microsoft" for product "Internet Information Services" and version "2.0"		-		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