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If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important.  If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.


Home >> Browse Vulnerability Assessment Database >> Denial of Service >> PHP Image File Format Denial Of Service Vulnerabilities


Vulnerability Assessment Details

PHP Image File Format Denial Of Service Vulnerabilities

Vulnerability Assessment Summary
Checks for image file format denial of service vulnerabilities in PHP

Detailed Explanation for this Vulnerability Assessment

Summary :

The remote web server is prone to denial of service attacks.

Description :

According to its banner, the version of PHP installed on the remote
host is vulnerable to a denial of service attack due to its failure to
properly validate file data in the routines 'php_handle_iff' and
'php_handle_jpeg', which are called by the PHP function
'getimagesize'. Using a specially crafted image file, a possible hacker can
trigger an infinite loop when 'getimagesize' is called, perhaps even
remotely in the case image uploads are permited.

See also :

http://www.idefense.com/intelligence/vulnerabilities/display.php?id=222
http://www.securityfocus.com/archive/1/394797
http://www.php.net/release_4_3_11.php

Solution :

Upgrade to PHP 4.3.11 / 5.0.4 or later.

Network Security Threat Level:

Low / CVSS Base Score : 3
(AV:R/AC:H/Au:NR/C:N/A:C/I:N/B:N)

Networks Security ID: 12962, 12963

Vulnerability Assessment Copyright: This script is Copyright (C) 2005-2006 Tenable Network Security

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