AppCheck Security Blog

AppCheck Discovers Vulnerability in Auth0 Library (CVE-2017-17068)

AppCheck discovered a security flaw within the auth0.js JavaScript library that could be exploited by a malicious website to read sensitive access tokens cross-domain.

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AppCheck Discovers Vulnerability in Auth0 Library (CVE-2017-17068)

AppCheck discovered a security flaw within the auth0.js JavaScript library that could be exploited by a malicious website to read sensitive access tokens cross-domain.

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New WordPress SQLi Vulnerability Uncovered

A new WordPress SQLi vulnerability has been discovered by security researchers in a WordPress core, it’s strongly recommended to update to version 4.8.3, the latest at the time of writing, if you haven’t done so already.

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Apache Struts (CVE-2017-9805)

Security researchers announced on 05 September 2017, a critical remote code execution vulnerability in Apache Struts.

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Petya Ransomware: The Basics

A little over two months on since WannaCry set the internet on fire, a new release of ransomware is spreading around the world, as experts unfortunately warned might happen.

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Critical Joomla 3.7 SQL Injection Vulnerability Patched

On the 17th of May 2017, the Joomla team issued a patch for a high severity security flaw that could allow a remote unauthenticated attacker to execute arbitrary SQL queries on the target system. A malicious attacker could exploit this flaw to read, create, modify and delete data stored within the database. It is also possible to gain administrator control of the Joomla CMS and execute PHP code on the affected server by exploiting this flaw.

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WanaCrypt0r – Ransom Attack

With the global spread of this particular malware on Friday and the media coverage it has received, it is understandable that many customers are wanting to know more about this threat and what they can do to protect against it.

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New Apache Struts Zero Day Vulnerability Discovered

On the 6th March 2017 information security researchers have discovered a Zero-Day vulnerability in Apache Struts web application framework, which is being actively exploited in the wild and is under active attack. Apache Struts is a free, open-source, Model-View-Controller (MVC) framework for creating elegant, modern Java web applications, which supports REST, AJAX, and JSON.

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Detecting and Exploiting the PHPMailer RCE

On the 25th of December 2016, a security researcher disclosed a critical security flaw within a popular PHP library used to send emails. The PHPMailer library is used by more than 9 million websites worldwide and is bundled with popular open source PHP content management systems such as WordPress. At worst the flaw could be exploited to execute arbitrary PHP code on the affected system. This would allow the remote attacker to take complete control of the application and launch further attacks against the system and internal network. PHPMailer versions below 5.2.20 are affected along with a number of other libraries that include the vulnerable code; such as SwiftMail and the Zend Framework.

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High Severity Joomla Vulnerability Patched

On the 25th of October 2016, the Joomla team issued a patch for a high severity security flaw that could allow a remote unauthenticated attacker to create administrative accounts on the target system. AppCheck was updated on the same day to detect and safely exploit the vulnerability.

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Hunting HTML 5 PostMessage Vulnerabilities

AppCheck partnered with Sec-1 Ltd to undertake a research project investigating the security challenges posed by next generation web applications. The project included an investigation of Cross-Origin communication mechanisms provided via HTML5 including postMessage and CORS.

One of the key findings from the research shows that vulnerabilities introduced through an insecure postMessage implementation are frequently missed by security scanners and consultants performing manual review.

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