software site: http://phpgraphy.sourceforge.net/
description: "Full featured photo gallery PHP script - Light, fast and easy to
install"
vulnerable code index.php near line 503-10:
…
if ($updwelcome && isset($welcomedata) && check_welcome($dir)) {
if (strlen($welcomedata) < 10000) {
write_welcome($dir,$welcomedata);
echo "<html><script language=\"javascript\">window.opener.location=\"?dir=".rawurlencode($dir)."\";window.close();</script></html>";
} else echo "Sorry more data (10k) than allowed, protection aborting the operation<br />";
exit;
}
…
poc, a remote user can go to this url:
http://[target]/[path]/index.php?dir=&editwelcome=1&popup=0
to have unauthorized access to some edit functionalities and to insert html/
/javascript code or simply deface the main page
temporary patch -> replace this line:
…
if ($updwelcome && isset($welcomedata) && check_welcome($dir)) {
…
with:
…
if ($admin && $updwelcome && isset($welcomedata) && check_welcome($dir)) {
…
rgod