Apache HTTP Server 403 Error Page UTF-7 Encoded XSS

medium Nessus Plugin ID 17696

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Synopsis

The web server running on the remote host has a cross-site scripting vulnerability.

Description

According to its banner, the version of Apache HTTP Server running on the remote host can be used in cross-site scripting (XSS) attacks. Making a specially crafted request can inject UTF-7 encoded script code into a 403 response page, resulting in XSS attacks.

This is actually a web browser vulnerability that occurs due to non-compliance with RFC 2616 (refer to BID 29112). Apache HTTP Server is not vulnerable, but its default configuration can trigger the non-compliant, exploitable behavior in vulnerable browsers.

Solution

Upgrade to Apache HTTP Server 2.2.8 / 2.0.63 / 1.3.41 or later. These versions use a default configuration setting that prevents exploitation in vulnerable web browsers.

Plugin Details

Severity: Medium

ID: 17696

File Name: apache_utf7_xss.nasl

Version: 1.9

Type: remote

Family: Web Servers

Published: 11/18/2011

Updated: 11/15/2018

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.3

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.4

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

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.9

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

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

Vulnerability Information

CPE: cpe:/a:apache:http_server

Required KB Items: installed_sw/Apache

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 1/2/2008

Vulnerability Publication Date: 5/8/2008

Reference Information

CVE: CVE-2008-2168

BID: 29112

CWE: 79

Detections

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