RES: Web site defacing



"XSS are common ways to achieve this by attacking the application itself"

XSS attacks client-side, not the application itself...

-----Mensagem original-----
De: listbounce@xxxxxxxxxxxxxxxxx [mailto:listbounce@xxxxxxxxxxxxxxxxx] Em
nome de Harshvardhan Parmar
Enviada em: terça-feira, 15 de novembro de 2011 05:18
Para: security-basics@xxxxxxxxxxxxxxxxx
Assunto: Re: Web site defacing

Hello

As mentioned by others, the primary requirement for defacement would
be some kind of access to your content.
SQL Injection and XSS are common ways to achieve this by attacking the
application itself.
CSRF could also be used, provided there is some option on your site
which allows adding/modifying content.
In case WebDAV is enabled and accessible remotely, it can also be used
for defacement.
Or I could use FTP to upload the defaced content, depending on how FTP
is configured.
Other ways would be using the file upload feature or SSI Injection.

The attacks mentioned above are not exhaustive ways of defacing a
website. In order to safeguard yourself, the following best practices
should help.
1. Your web application must not be vulnerable to attacks
2. Any service which is not required must not be exposed to the users
3. All the services running should be safeguarded with strong
authentication credentials
4. The folder where you store the code should only be accessible for
local users; no remote access allowed

These do not guarantee complete immunity to defacement but
considerably reduce the chances of a successful attack. Of course, if
you are using shared hosting, then a vulnerability on the co-hosted
site makes you vulnerable as well.

Regards
Harsh

On Mon, Nov 14, 2011 at 1:04 PM, a bv <vbavbalist@xxxxxxxxx> wrote:

Hi,

what kind of vulnerabilities , methodologies does it allow to deface a
web site? And what must be the countermeasures regarding these?


Regards

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In this guide we examine the importance of Apache-SSL and who needs an SSL certificate. We look at how SSL works, how it benefits your company and how your customers can tell if a site is secure. You will find out how to test, purchase, install and use a thawte Digital Certificate on your Apache web server. Throughout, best practices for set-up are highlighted to help you ensure efficient ongoing management of your encryption keys and digital certificates.

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