Menu
Critical flaws in ImageMagick library expose websites to hacking

Critical flaws in ImageMagick library expose websites to hacking

The flaws can be exploited through specially crafted images to execute malicious code on Web servers

A tool used by millions of websites to process images has several critical vulnerabilities that could allow attackers to compromise Web servers. To make things worse, there's no official patch yet and exploits are already available.

The vulnerabilities were discovered by Nikolay Ermishkin from the Mail.Ru security team and were reported to the ImageMagick developers who attempted a fix in version 6.9.3-9, released on April 30. However, the fix is incomplete and the vulnerabilities can still be exploited.

Furthermore, there is evidence that people aside from security researchers and  ImageMagick developers know about the flaws, which is why their existence was publicly disclosed Tuesday. The flaws can be exploited by uploading specially crafted images to Web applications that rely on ImageMagick to process them.

ImageMagick is a command-line tool that can be used to create, edit and convert a large number of image file formats. Its library is the base for other Web server packages like PHP’s imagick, Ruby’s rmagick and papercli and Node.js’s imagemagick.

Since the public disclosure Tuesday, security researchers have already developed proof-of-concept exploits for the issues. This means that attackers could too, increasing the likelihood of malicious in-the-wild attacks.

Security researchers have dubbed the set of flaws ImageTragick and created a website with more information for website developers and administrators, including mitigation advice until a complete patch is made available.

"Verify that all image files begin with the expected 'magic bytes' corresponding to the image file types you support before sending them to ImageMagick for processing," the researchers said on the website. "Use a policy file to disable the vulnerable ImageMagick coders. The global policy for ImageMagick is usually found in '/etc/ImageMagick'."

The ImageMagick developers have also suggested the policy-based mitigation and posted an example policy file on their support forum.


Follow Us

Join the New Zealand Reseller News newsletter!

Error: Please check your email address.

Featured

Slideshows

Consegna comes to town with AWS cloud offerings launch in Auckland

Consegna comes to town with AWS cloud offerings launch in Auckland

Emerging start-up Consegna has officially launched its cloud offerings in the New Zealand market, through a kick-off event held at Seafarers Building in Auckland.​ Founded in June 2016, the Auckland-based business is backed by AWS and supported by a global team of cloud specialists, leveraging global managed services partnerships with Rackspace locally.

Consegna comes to town with AWS cloud offerings launch in Auckland
Veritas honours top performing trans-Tasman partners

Veritas honours top performing trans-Tasman partners

Veritas honoured its top performing partners across the channel in Australia and New Zealand, recognising innovation and excellence on both sides of the Tasman. Revealed under the Vivid lights in Sydney, Intalock claimed the coveted Partner of the Year 2017 (Pacific) award, with Data#3 acknowledged for 12 months of strong growth across the market. Meanwhile, Datacom took home the New Zealand honours, with Global Storage and Insentra winning service provider and consulting awards respectively. Dicker Data was recognised as the standout distributor of the year, while Hitachi Data Systems claimed the alliance partner award. Photos by Bob Seary.

Veritas honours top performing trans-Tasman partners
An Evening With Eugene Kaspersky for Kiwi partners in Auckland

An Evening With Eugene Kaspersky for Kiwi partners in Auckland

​New Zealand partners came together for An Evening With Eugene Kaspersky in Auckland, an invitation only event as part of Kaspersky Lab Partner Engage. Following an evening of insights and executive networking with the founder of Kaspersky Lab, Eugene Kaspersky, Kiwi partners got up close and personal with Eugene in an unprecedented​ panel discussion. Facilitated by Reseller News, this panel explored channel relationships, successful business strategies, and the latest ground breaking technologies to impact the security market. Photos by Maria Stefina.

An Evening With Eugene Kaspersky for Kiwi partners in Auckland
Show Comments