Web Server HTTP Header Internal IP Disclosure

Low Nessus Plugin ID 10759

New! Vulnerability Priority Rating (VPR)

Tenable calculates a dynamic VPR for every vulnerability. VPR combines vulnerability information with threat intelligence and machine learning algorithms to predict which vulnerabilities are most likely to be exploited in attacks. Read more about what VPR is and how it's different from CVSS.

VPR Score: 2.2

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: 2001/09/14

Updated: 2019/06/24

Dependencies: 11919, 10107, 17975

Risk Information

Risk Factor: Low

VPR Score: 2.2

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