syner-lfi.txt

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____ __________ __ ____ __   
/_ | ____ |__\_____ \ _____/ |_ /_ |/ |_   
| |/ \ | | _(__ <_/ ___\ __\ ______ | \ __\  
| | | \ | |/ \ \___| | /_____/ | || |   
|___|___| /\__| /______ /\___ >__| |___||__|   
\/\______| \/ \/   
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Http://www.inj3ct-it.org Staff[at]inj3ct-it[dot]org   
Original here: http://www.inj3ct-it.org/exploit/syner.txt  
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Synergiser <= 1.2 RC1 Local File Inclusion & Full path disclosure  
  
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#By KiNgOfThEwOrLd  
  
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PoC:  
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Synergiser cms allows to include a file by the get variabile "page". We can't include a remote file, coz there is a filter..but we can include, by a directory traversal, some important files...for example:  
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http://[target]/[synergiser_path]/index.php?page=../../../etc/passwd  
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So, we have to know the script path if we wanna browse the server...we can get it generating a full path disclosure, like this:  
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http://[target]/[synergiser_path]/index.php?page=../index.php  
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We know that a function cannot be declared two times. So, let's read the "index.php" code, and we will found:  
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include('application_top.php');  
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This row includes "application_top.php". In that page, is declared a php function: assign_rand_value(); So, including index.php in index.php, we will reinclude application_top.php, and we will redeclare the same function. We can't do it! So the server will answer:  
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Fatal error: Cannot redeclare assign_rand_value() (previously declared in [script_path]/application_top.php:9) in [script_path]/application_top.php on line 124  
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And we got the script path! :P  
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