Web Server HTTP Header Internal IP Disclosure

Low Nessus Plugin ID 10759


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


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.


Apply configuration suggested by vendor.

See Also




Plugin Details

Severity: Low

ID: 10759

File Name: iis_nat.nasl

Version: 1.61

Type: remote

Family: Web Servers

Published: 2001/09/14

Updated: 2019/06/24

Dependencies: 11919, 10107, 17975

Risk Information

Risk Factor: Low

CVSS Score Source: CVE-2000-0649

CVSS v2.0

Base Score: 2.6

Temporal Score: 2

Vector: CVSS2#AV:N/AC:H/Au:N/C:P/I:N/A:N

Temporal Vector: CVSS2#E:POC/RL:OF/RC:C

CVSS v3.0

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: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:microsoft:iis

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 2000/07/13

Reference Information

CVE: CVE-2000-0649

BID: 1499

CWE: 200