CERN httpd Double Slash Protected Webpage Bypass

medium Nessus Plugin ID 17230

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Synopsis

The remote web server is affected by an information disclosure vulnerability.

Description

The remote web server allows an attacker to access protected web pages by replacing slashes in the URL with '//' or '/./', which is a known problem in older versions of CERN web server.

Solution

Contact the web server vendor for an update or tighten its filtering rules to reject patterns such as :

//*
*//* /./*
*/./*

Plugin Details

Severity: Medium

ID: 17230

File Name: cern_httpd_access_ctrl.nasl

Version: 1.19

Type: remote

Family: Web Servers

Published: 2/28/2005

Updated: 8/9/2018

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Vulnerability Information

Required KB Items: Settings/ParanoidReport

Vulnerability Publication Date: 5/1/1997

Detections

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