If your web server is running on Apache Tomcat, you should immediately install the latest available version of the server application to prevent hackers from taking unauthorized control over it.
Yes, that’s possible because all versions (9.x/8.x/7.x/6.x) of the Apache Tomcat released in the past 13 years have been found vulnerable to a new high-severity (CVSS 9.8) ‘file read and inclusion bug’—which can be exploited in the default configuration.
But it’s more concerning because several proof-of-concept exploits (1, 2, 3, 4 and more) for this vulnerability have also been surfaced on the Internet, making it easy for anyone to hack into publicly accessible vulnerable web servers.
Dubbed ‘Ghostcat‘ and tracked as CVE-2020-1938, the flaw could let unauthenticated, remote attackers read the content of any file on a vulnerable web server and obtain sensitive configuration files or source code, or execute arbitrary code if the server allows file upload, as shown in a demo below.
What is Ghostcat Flaw And How Does it Work?
According to Chinese cybersecurity company Chaitin Tech, the vulnerability resides in the AJP protocol of Apache Tomcat software that arises due to improper…