ModSecurity < 2.1.1 POST Data Null Byte Filter Bypass

medium Nessus Plugin ID 67124

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Synopsis

The remote web application firewall may be affected by a security bypass vulnerability.

Description

According to its banner, the version of ModSecurity installed on the remote host is earlier than 2.1.1. It is, therefore, potentially affected by a security bypass vulnerability. An error exists related to HTTP POST requests and 'application/x-www-form-urlencoded' content containing un-encoded NULL bytes that could allow a remote attacker to bypass certain filters and carry out attacks.

Note that Nessus has not tested for this issue but has instead relied only on the version in the server's banner.

Solution

Upgrade to ModSecurity version 2.1.1 or later.

Plugin Details

Severity: Medium

ID: 67124

File Name: modsecurity_2_1_1.nasl

Version: 1.7

Type: remote

Family: Firewalls

Published: 7/2/2013

Updated: 4/11/2022

Configuration: Enable paranoid mode, Enable thorough checks

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.1

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

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

Vulnerability Information

CPE: cpe:/a:modsecurity:modsecurity

Required KB Items: Settings/ParanoidReport, www/ModSecurity

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/11/2007

Vulnerability Publication Date: 3/6/2007

Reference Information

CVE: CVE-2007-1359

BID: 22831

Detections

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