Showing posts with label amazon S3. Show all posts
Showing posts with label amazon S3. Show all posts

Thursday, May 7, 2015

Amazon Finally Ditches SSLv3

Amazon S3 subscribers recently received a form letter like this one:

Dear AWS Customer,

This message explains some security improvements in our services. Your security is important to us. Please review the entire message carefully to determine whether your use of the services will be affected, and if so what you need to do.

As of 12:00 AM PDT May 20, 2015, AWS will discontinue support of SSLv3 for securing connections to S3 buckets. Security research published late last year demonstrated that SSLv3 contained weaknesses in its ability to protect and secure communications. These weaknesses have been addressed in Transport Layer Security (TLS), which is the replacement for SSL. Consistent with our top priority to protect AWS customers, AWS will only support versions of the more modern TLS rather than SSLv3.

You are receiving this email because some of your users are accessing Amazon S3 using a browser configured to use SSLv3, or some of your existing applications that use Amazon S3 are configured to use SSLv3. These requests will fail once AWS disables support for SSLv3 for the Amazon S3 service.

The following bucket(s) are currently accepting requests from clients (e.g. mobile devices, browsers, and applications) that specify SSLv3 to connect to Amazon S3 HTTPS endpoints.

XXXXXXXX.XXXXXXX.XXXXXXX : XXXXXX-XXXXXX-XXXXX

For your applications to continue running on Amazon S3, your end users need to access S3 from clients configured to use TLS. As any necessary changes would need to be made in your application, we recommend that you review your applications that are accessing the specified S3 buckets to determine what changes may be required. If you need assistance (e.g. to help identify clients connecting to S3 using SSLv3), please contact our AWS Technical Support or AWS Customer Service.

For further reading on SSLv3 security concerns and why it is important to disable support for this nearly 18 year old protocol, we suggest the following articles:

https://www.us-cert.gov/ncas/alerts/TA14-290A
https://blog.mozilla.org/security/2014/10/14/the-poodle-attack-and-the-end-of-ssl-3-0/
http://disablessl3.com/#why

Thank you for your prompt attention.

Sincerely,
The Amazon Web Services Team

Amazon Web Services, Inc. is a subsidiary of Amazon.com, Inc. Amazon.com is a registered trademark of Amazon.com, Inc. This message was produced and distributed by Amazon Web Services Inc., 410 Terry Ave. North, Seattle, WA 98109-5210

Sunday, February 1, 2015

Uploading HTML forms to Amazon S3 using PHP

Dynamically uploading information to S3 can be a bit challenging to do initially, particularly in PHP where a lot of the documentation is either really new or really old.

Amazon has a PHP SDK, which is available as either a .phar file or can be installed using Composer. That's cool for building a new project, but what if you have a pre-existing project or form and just want to be able to dump the text output to S3?

I've put together some code at Github that will take care of that issue. The only requirement is PHP and an Amazon S3 account.

Download or clone the files here: https://github.com/jwieder/s3-http-php-form

Your Amazon access keys and other configuration are stored in a single configuration file. Just fill out your login info into the configuration file and include the php form where you need it as outlined in the README.md file and you should be all set!

RAT Bastard

Earlier this week, several servers I maintain were targeted by automated attempts to upload a remote access trojan (RAT). The RAT is a simpl...