Web Server HTTP Header Internal IP Disclosure

low Nessus Plugin ID 10759
New! Plugin Severity Now Using CVSS v3

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Synopsis

This web server leaks a private IP address through its HTTP headers.

Description

This may expose internal IP addresses that are usually hidden or masked behind a Network Address Translation (NAT) Firewall or proxy server.

There is a known issue with Microsoft IIS 4.0 doing this in its default configuration. This may also affect other web servers, web applications, web proxies, load balancers and through a variety of misconfigurations related to redirection.

Solution

Apply configuration suggested by vendor.

See Also

http://www.nessus.org/u?fe24f941

https://support.microsoft.com/en-us/help/218180

http://www.nessus.org/u?4eedfe2d

Plugin Details

Severity: Low

ID: 10759

File Name: iis_nat.nasl

Version: 1.61

Type: remote

Family: Web Servers

Published: 9/14/2001

Updated: 6/24/2019

Dependencies: find_service1.nasl, http_version.nasl, www_fingerprinting_hmap.nasl

Risk Information

CVSS Score Source: CVE-2000-0649

VPR

Risk Factor: Low

Score: 2.2

CVSS v2

Risk Factor: Low

Base Score: 2.6

Temporal Score: 2

Vector: AV:N/AC:H/Au:N/C:P/I:N/A:N

Temporal Vector: E:POC/RL:OF/RC:C

CVSS v3

Risk Factor: Low

Base Score: 3.1

Temporal Score: 2.8

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N

Temporal Vector: E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:microsoft:iis

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 7/13/2000

Reference Information

CVE: CVE-2000-0649

BID: 1499

CWE: 200