![]() ![]() The Black Duck Security Advisory for CVE-2020-1938 tags this vulnerability as BDSA-2020-0339, as shown in the image below, and includes the workaround, the CVSS 3.0 score, and the CVSS 2.0 score. You can drill down to the exact open source component that contains a vulnerability and apply a fix. When we update the Black Duck KnowledgeBase™ (which we do every hour), any new vulnerability information related to the open source components in your applications is pushed to you in the form of new notifications. The best part is that you don’t need to keep rescanning your applications to uncover new vulnerabilities. So how can your development and security teams stay up to date on all new vulnerabilities found in the open source components you already use?īlack Duck’s enhanced vulnerability reports include information from both the NVD security feed and Black Duck Security Advisories, our own proprietary security feed from the Cybersecurity Research Center ( CyRC). Apache Tomcat is a very widely used open source component, with more than 10 million downloads, per the Apache Foundation blog. The Ghostcat vulnerability is a perfect example of how a new vulnerability in a popular component can have a widespread effect. New vulnerabilities are discovered every day in already released open source components. ![]() However, the attacker must be able to save the uploaded files to the document root and to reach the AJP port directly from outside the target’s network. If an application running on an affected version of Tomcat contains a file upload vulnerability, an attacker can exploit it in combination with Ghostcat to achieve remote code execution. When you get 'error 110' trying to connect back into tomcat it indicates you've got a queue of connections waiting to be served that no more can fit into the listening backlog setup for the listening socket in tomcat. Remote code execution is not possible by default. I suspect your problem is in tomcat not apache, from the logs you have shown anyway. It also allows the attacker to process any file in the web application as JSP. Ghostcat allows an attacker to retrieve arbitrary files from anywhere in the web application, including the WEB-INF and META-INF directories and any other location that can be reached via ServletContext.getResourceAsStream(). This connection is treated with more trust than a connection such as HTTP, allowing an attacker to exploit it to perform actions that are not intended for an untrusted user. Apache Tomcat includes the AJP connector, which is enabled by default and listens on all addresses on port 8009. Ghostcat is a vulnerability found in Apache Tomcat versions 6.x, 7.x, 8.x, and 9.x that allows remote code execution in some circumstances. ![]()
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