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Re: [Full-disclosure] Referers Are Evil
From: Bipin Gautam (gautam.bipingmail.com)
Date: Sun Aug 07 2005 - 13:27:18 CDT
this was my best kept secret! (o;
BUT, i remember testing it on PHPBB back then, i don't think you can
take over the session on that! (i may be wrong). YAP, but there are
LOTS of sites & applications out there from which you can easily steal
On 8/7/05, Ripe Md <ripemd160gmail.com> wrote:
> With referers (HTTP_REFERER) it is easy to takeover sessions in some
> Web applications Forums (phpBB) and so far. If an user of such an
> are mostly transportet over the URL. If somebody else places a
> Hyperlink for example in a Forum which points to a server, which other
> person owns, the other person, has just to read the referer log of
> this server. The same problem occurs also in Forums, which allow the
> including of external pictures for example with the [IMG]-BB-Tag.
> On the Clientside:
> Disable the sending of the Referer in the Browser.
> On the Serverside:
> for Links:
> - Use An URL Database, and store all Hyperlinks of your users in it.
> - Make an Link exit page, which doesn't include any sensitive Information.
> For Pictures:
> - Just don't allow users to include externl pictures.
> ~ RIPEMD160
> Full-Disclosure - We believe in it.
> Charter: http://lists.grok.org.uk/full-disclosure-charter.html
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Full-Disclosure - We believe in it.
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