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Vulnerability Assessment & Network Security Forums |
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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 >> Gentoo Local Security Checks >> [GLSA-200411-32] phpBB: Remote command execution Vulnerability Assessment Details
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[GLSA-200411-32] phpBB: Remote command execution |
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phpBB: Remote command execution Detailed Explanation for this Vulnerability Assessment The remote host is affected by the vulnerability described in GLSA-200411-32 (phpBB: Remote command execution) phpBB contains a vulnerability in the highlighting code and several vulnerabilities in the username handling code. Impact A possible hacker can exploit the highlighting vulnerability to access the PHP exec() function without restriction, permiting them to run arbitrary commands with the rights of the web server user (for example the apache user). Furthermore, the username handling vulnerability might be abused to execute SQL statements on the phpBB database. Workaround There is a one-line patch which will remediate the remote execution vulnerability. Locate the following block of code in viewtopic.php: // // Was a highlight request part of the URI? // $highlight_match = $highlight = '' if (isset($HTTP_GET_VARS['highlight'])) { // Split words and phrases $words = explode(' ', trim(htmlspecialchars(urldecode($HTTP_GET_VARS['highlight'])))) for($i = 0 $i < sizeof($words) $i++) { Replace with the following: // // Was a highlight request part of the URI? // $highlight_match = $highlight = '' if (isset($HTTP_GET_VARS['highlight'])) { // Split words and phrases $words = explode(' ', trim(htmlspecialchars($HTTP_GET_VARS['highlight']))) for($i = 0 $i < sizeof($words) $i++) { References: http://www.phpbb.com/phpBB/viewtopic.php?t=240513 Solution: All phpBB users should upgrade to the latest version to fix all known vulnerabilities: # emerge --sync # emerge --ask --oneshot --verbose ">=www-apps/phpbb-2.0.11" Network Security Threat Level: High Networks Security ID: Vulnerability Assessment Copyright: (C) 2005 Michel Arboi |
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