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The massive Equifax data breach that exposed highly sensitive data of as many as 143 million people was caused by exploiting a flaw in Apache Struts framework, which Apache patched over two months earlier of the security incident, Equifax has confirmed. Credit rating agency Equifax is yet another example of the companies that became victims of massive cyber attacks due to not patching a critical vulnerability on time, for which patches were already issued by the respected companies. Rated critical with a maximum 10.0 score, the Apache Struts2 vulnerability (CVE-2017-5638) exploited in the Equifax breach was disclosed and fixed by Apache on March 6 with the release of Apache Struts version 2.3.32 or 2.5.10.1. This flaw is separate from CVE-2017-9805, another Apache Struts2 vulnerability that was patched earlier this month, which was a programming bug that manifests due to the way Struts REST plugin handles XML payloads while deserializing them, and was fixed in Struts versio

Last year Google employees took an initiative to help thousands of Open Source Projects patch a critical remote code execution vulnerability in a widely used Apache Commons Collections (ACC) library. Dubbed Operation Rosehub , the initiative was volunteered by some 50 Google employees, who utilized 20 percent of their work time to patch over 2600 open source projects on Github, those were vulnerable to "Mad Gadget vulnerability." Mad Gadget vulnerability ( CVE-2015-6420 ) is a remote code execution bug in the Java deserialization used by the Apache Commons Collections (ACC) library that could allow an unauthenticated, remote attacker to execute arbitrary code on a system. The ACC Library is widely deployed by many Java applications to decode data passed between computers. To exploit this flaw, all an unauthorized attacker need to do is submit maliciously crafted input to an application on a targeted system that uses the ACC library. Once the vulnerable ACC libra

Follow this real-life network attack simulation, covering 6 steps from Initial Access to Data Exfiltration. See how attackers remain undetected with the simplest tools and why you need multiple choke points in your defense strategy. Surprisingly, most network attacks are not exceptionally sophisticated, technologically advanced, or reliant on zero-day tools that exploit edge-case vulnerabilities. Instead, they often use commonly available tools and exploit multiple vulnerability points. By simulating a real-world network attack, security teams can test their detection systems, ensure they have multiple choke points in place, and demonstrate the value of networking security to leadership. In this article, we demonstrate a real-life attack that could easily occur in many systems. The attack simulation was developed based on the MITRE ATT&CK framework, Atomic Red Team,  Cato Networks ' experience in the field, and public threat intel. In the end, we explain why a holistic secur

Takashi Katsuki, a researcher at Antivirus firm Symantec has discovered a new cyber attack ongoing in the wild, targeting an open-source Web server application server Apache Tomcat with a cross platform Java based backdoor that can be used to attack other machines. The malware, dubbed as " Java.Tomdep " differs from other server malware and is not written in the PHP scripting language. It is basically a Java based backdoor act as Java Servlet that gives Apache Tomcat platforms malicious capabilities. Because Java is a cross platform language, the affected platforms include Linux, Mac OS X, Solaris, and most supported versions of Windows. The malware was detected less than a month ago and so far the number of infected machines appears to be low. You may think that this type of attack only targets personal computers, such as desktops and laptops, but unfortunately that isn't true. Servers can also be attacked. They are quite valuable targets, since they are usu

A new sophisticated and stealthy Apache backdoor meant to drive traffic to malicious websites serving Blackhole exploit kit widely has been detected by  Sucuri recently. Researchers claimed that this backdoor affecting hundreds of web servers right now. Dubbed Linux/Cdorked.A , one of the most sophisticated Apache backdoors we have seen so far. The backdoor leaves no traces of compromised hosts on the hard drive other than its modified httpd binary, thereby complicating forensics analysis. All of the information related to the backdoor is stored in shared memory.  The configuration is pushed by the attacker through obfuscated HTTP requests that aren't logged in normal Apache logs. The HTTP server is equipped with a reverse connect backdoor that can be triggered via a special HTTP GET request. This means that no command and control information is stored anywhere on the system. ESET researchers  analyzed the binary and discovered a nasty hidden backdoor. In the Li

Some critical vulnerabilities have been reported in Apache Tomcat, which can be exploited by malicious people to bypass certain security restrictions and cause a DoS (Denial of Service) attack. These vulnerabilities affect Apache Tomcat 6.x and Apache Tomcat 7.x . Apache Tomcat vulnerabilities CVE-2012-4534 Apache Tomcat denial of service CVE-2012-3546 Apache Tomcat Bypass of security constraints CVE-2012-4431 Apache Tomcat Bypass of CSRF prevention filter According to CVE-2012-4431 , The CSRF prevention filter could be bypassed if a request was made to a protected resource without a session identifier present in the request. CVE-2012-4534, DOS includes vulnerabilities ranging from excessive resource consumption (e.g. causing a system to use a lot of memory) to crashing an application or an entire system. Whereas, CVE-2012-3546 - where malicious users or people can bypass certain security mechanisms of the application. The actual impact varies signif