What is the Ghostcat vulnerability?

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What is the Ghostcat vulnerability?

Ghostcat is a serious vulnerability in Tomcat discovered by security researcher of Chaitin Tech. Due to a flaw in the Tomcat AJP protocol, an attacker can read or include any files in the webapp directories of Tomcat. For example, An attacker can read the webapp configuration files or source code.

What company did the security researcher who discovered the Ghostcat vulnerability work at?

This vulnerability was discovered by a security researcher of Chaitin Tech. Henry Chen, a security researcher at Alibaba Cloud, published a tweet confirming that exploiting the vulnerability would allow someone to “read any webapps files or include a file to RCE.”

How do I fix Apache Tomcat default files vulnerability in Windows?

Solution: Delete the default index page and remove the example JSP and servlets. Follow the Tomcat or OWASP instructions to replace or modify the default error page.

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What is Tomcat AJP port used for?

Apache JServ Protocol (AJP) is used for communication between Tomcat and Apache web server. This protocol is binary and is enabled by default. Anytime the web server is started, AJP protocol is started on port 8009. It is primarily used as a reverse proxy to communicate with application servers.

Which of the following Apache Tomcat server versions are affected by the Ghostcat CVE 2020 1938 vulnerability?

The easiest way to fix this vulnerability is by updating your Apache Tomcat version to 9.0. 31 or 8.5. 51, or 7.0. 100.

How do I disable AJP protocol port?

To disable the AJP protocol in Apache Tomcat:

  1. Edit the file server.xml.
  2. Search for the section,
  3. Comment out the AJP protocol configuration, from:
  4. Save the server.xml file.
  5. Restart Apache Tomcat. Reference.

What does cat VULN exploit server do?

What is the impact of this vulnerability? In most cases, this vulnerability will allow an attacker to read any resources that exist on the Tomcat server. This means that any server or configuration files could be leaked. The severity of this varies based on what is contained in the source code and configuration files.

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What is the latest version of Apache Tomcat?

2021-12-08 Tomcat 9.0.56 Released.

What is Apache Tomcat default files?

The two most important configuration files to get Tomcat up and running are called server. xml and web. xml. By default, these files are located at TOMCAT-HOME/conf/server.

How do I fix Apache Tomcat default?

Delete the default index page and remove the example JSP and servlets. Follow the Tomcat or OWASP instructions to replace or modify the default error page.

What is AJP?

The Apache JServ Protocol (AJP) is a binary protocol that can proxy inbound requests from a web server through to an application server that sits behind the web server. It also supports some monitoring in that the web server can ping the application server.

What is AJP connector Tomcat 9?

The AJP Connector element represents a Connector component that communicates with a web connector via the AJP protocol. Use of the AJP protocol requires additional security considerations because it allows greater direct manipulation of Tomcat’s internal data structures than the HTTP connectors.

What is the ghostcat vulnerability (cve-2020-1938)?

What is the Ghostcat Vulnerability (CVE-2020-1938)? The Apache Tomcat servers that have been released over the last thirteen years are vulnerable to a bug known as “Ghostcat” (CVE-2020-1938) that allows hackers to take over unpatched systems. Discovered by Chinese cybersecurity firm Chaitin Tech, Ghostcat is a flaw in the Tomcat AJP protocol.

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What is ghostcat and how can I protect against it?

Ghostcat exploits the Apache Jserv Protocol connector to read and write files to a Apache Tomcat server. The Apache Tomcat security release states “ [the] mitigation is only required if an AJP port is accessible to untrusted users.” Please follow the instructions below to assess and address your vulnerability.

What is the Apache Tomcat “ghostcat”?

The Apache Tomcat servers that have been released over the last thirteen years are vulnerable to a bug known as “Ghostcat” (CVE-2020-1938) that allows hackers to take over unpatched systems. Discovered by Chinese cybersecurity firm Chaitin Tech, Ghostcat is a flaw in the Tomcat AJP protocol.

Is Tomcat AJP connector vulnerable to the ghostcat vulnerability?

If the AJP Connector is enabled and the attacker can access the AJP Connector service port, there is a risk of be exploited by the Ghostcat vulnerability. It should be noted that Tomcat AJP Connector is enabled by default and listens at 0.0.0.0:8009.