WordPres 4.7.3 is now available

This is a “Security & Maintenance” release that doesn’t introduce any new feature, as it fixes bugs and problems available in the previous versions.
Because of the security-related fixes, we encourage you to update as soon as possible.

The previous versions had 6 big problems that have been completely fixed:

  • Cross-site scripting (XSS) via media file metadata. Reported by Chris Andrè Dale, Yorick Koster, and Simon P. Briggs.
  • Control characters can trick redirect URL validation. Reported by Daniel Chatfield.
  • Unintended files can be deleted by administrators using the plugin deletion functionality. Reported by TrigInc and xuliang.
  • Cross-site scripting (XSS) via video URL in YouTube embeds. Reported by Marc Montpas.
  • Cross-site scripting (XSS) via taxonomy term names. Reported by Delta.
  • Cross-site request forgery (CSRF) in Press This leading to excessive use of server resources. Reported by Sipke Mellema.

The update is available within the administration dashboard with an “Update Now” banner, or it can be performed manually; if you have enabled automated updates, your system will be updated soon.

A vulnerability in Magento that allowed CSRF attacks has been discovered 

A vulnerability that allows Cross Site Request Forgery (CSRF) has been discovered in Magento Community Edition (2.1.6 and older) by DefenseCode, which released a document covering the topic. The discovery followed an auditing on the source code of the Community Edition, the Enterprise version has not been tested (yet), but it’s possible that this version too is affected by this issue as both version share the most of the code.

The vulnerability exploits the option that allows admins to add Vimeo videos to product description; the system retrieves a preview image with a POST request accepting the image URL as parameter.
Such request can be changed to GET, and if the URL links to an invalid image file (like a PHP file), the system returns an error, however it downloading the file and not deleting it if validation fails.
Image information are analyzed and stored in a directory that follows a precise scheme: the pattern used is /pub/media/tmp/catalog/product/<X>/<Y>/<original filename>, where the path depends on the image name. For instance, picture.jpg creates the /pub/media/tmp/catalog/product/p/i/picture.jpg path.
Then two files are downloaded: one is the .htaccess file that enalbes the execution of PHP files in the directory, the other is the malicious PHP script.
A typical scenario involves an hacker targeting a Magento user with admin panel access (it can also be a non-full admin) with a phishing email with a link to a URL that starts the CSRF attack.
The “Add Secret Keys to URLs” option can mitigate attacks: you can enable it in Stores > Configuration > ADVANCED > Admin > Security > Add Secret Key to URLs. 
Also disable the use of .htaccess files in the subdirectories of /pub/media/tmp/catalog/product/.

Magento developers stated this vulnerability will be fixexd in the next release of the CMS.

banner eng

fb icon evo twitter icon evo

Word of the Day

The term Edge Computing refers, when used in the cloud-based infrastructure sphere, the set of devices and technologies that allows...

>

The acronym SoC (System on Chip) describes particular integrated circuit that contain a whole system inside a single physical chip:...

>

The acronym PtP (Point-to-Point) indicates point-to-point radio links realized with wireless technologies. Differently, PtMP links connects a single source to...

>

Hold Down Timer is a technique used by network routers. When a node receives notification that another router is offline...

>

In the field of Information Technology, the term piggybacking refers to situations where an unauthorized third party gains access to...

>
Read also the others...

Download of the Day

Netcat

Netcat is a command line tool that can be used in both Linux and Windows environments, capable of...

>

Fiddler

Fiddler is a proxy server that can run locally to allow application debugging and control of data in...

>

Adapter Watch

Adapter Watch is a tool that shows a complete and detailed report about network cards. Download it here.

>

DNS DataView

DNS DataView is a graphical-interface software to perform DNS lookup queries from your PC using system-defined DNS, or...

>

SolarWinds Traceroute NG

SolarWinds Traceroute NG is a command line tool to perform advanced traceroute in Windows environment, compared to the...

>
All Download...

Issues Archive

  • GURU advisor: issue 18 - April 2018

    GURU advisor: issue 18 - April 2018

  • GURU advisor: issue 17 - January 2018

    GURU advisor: issue 17 - January 2018

  • GURU advisor: issue 16 - october 2017

    GURU advisor: issue 16 - october 2017

  • GURU advisor: issue 15 - July 2017

    GURU advisor: issue 15 - July 2017

  • GURU advisor: issue 14 - May 2017

    GURU advisor: issue 14 - May 2017

  • GURU advisor: issue 13 - March 2017

    GURU advisor: issue 13 - March 2017

  • GURU advisor: issue 12 -  January 2017

    GURU advisor: issue 12 - January 2017

  • GURU advisor: issue 11 -  October 2016

    GURU advisor: issue 11 - October 2016

  • 1
  • 2
  • 3
  • BYOD: your devices for your firm

    The quick evolution of informatics and technologies, together with the crisis that mined financial mines, has brought to a tendency inversion: users that prefer to work with their own devices as they’re often more advanced and modern than those the companies would provide. Read More
  • A switch for datacenters: Quanta LB4M

    You don’t always have to invest thousands of euros to build an enterprise-level networking: here’s our test of the Quanta LB4M switch Read More
  • Mobile World Congress in Barcelona

    GURU advisor will be at the Mobile World Congress in Barcelona from February 22nd to 25th 2016!

    MWC is one of the biggest conventions about the worldwide mobile market, we'll be present for the whole event and we'll keep you posted with news and previews from the congress.

    Read More
  • 1