Researchers find malware targeting Java HTTP servers
The malware has backdoor functionality and runs as a JavaServer Page (JSP) file
IDG News Service - Security researchers from antivirus vendor Trend Micro have uncovered a piece of backdoor-type malware that infects Java-based HTTP servers and allows attackers to execute malicious commands on the underlying systems.
The threat, known as BKDR_JAVAWAR.JG, comes in the form of a JavaServer Page (JSP), a type of Web page that can only be deployed and served from a specialized Web server with a Java servlet container, such as Apache Tomcat.
Once this page is deployed, the attacker can access it remotely and can use its functions to browse, upload, edit, delete, download or copy files from the infected system using a Web console interface. This is similar to the functionality provided by PHP-based backdoors, commonly known as PHP Web shells.
"Aside from gaining access to sensitive information, an attacker gains control of the infected system thru the backdoor and can carry out more malicious commands onto the vulnerable server," Trend Micro researchers said Thursday in a blog post.
This JSP backdoor can be installed by other malware already running on the system that hosts the Java-based HTTP server and Java servlet container or can be downloaded when browsing to malicious websites from such a system.
According to Trend Micro's technical notes, the malware targets systems running Windows 2000, Windows Server 2003, Windows XP, Windows Vista and Windows 7.
"Another possible attack scenario is when an attacker checks for websites powered by Apache Tomcat then attempts to access the Tomcat Web Application Manager," the Trend Micro researchers said. "Using a password cracking tool, cybercriminals are able to login and gain manager/administrative rights allowing the deployment of Web application archive (WAR) files packaged with the backdoor to the server."
In order to protect their servers from such threats, administrators should use strong passwords that cannot be easily cracked by using brute force tools, should deploy all security updates available for their systems and software and should avoid visiting unknown and untrusted websites, the Trend Micro researchers said.
- Radicati: Cloud Business Email - Market Quadrant 2013 Google was named the top cloud business email provider in a recent report by research firm Radicati. Out of 14 key players, Google...
- Tablets in the Enterprise: A Checklist for Successful Deployment How can you enterprise manage and secure tablets in order to protect corporate data while providing access to the information and applications employees...
- Enterprise Mobility: A Checklist for Secure Containerization The advantages and disadvantages of the multiple approaches to containerization. Learn More>>
- Enterprise File Sync & Share Checklist File sync and share has changed the way people work and collaborate in today's tech-savvy world. Gone are the email roadblocks, clunky FTP...
- Live Webcast LIVE EVENT: 5/7, The End of Data Protection As We Know It. Introducing a Next Generation Data Protection Architecture. Traditional backup is going away, but where does this leave end-users?
- LIVE EVENT: 5/7, The End of Data Protection As We Know It. Introducing a Next Generation Data Protection Architecture. Traditional backup is going away, but where does this leave end-users?
- On-demand webinar: "Mobility Mayhem: Balancing BYOD with Enterprise Security" Check out this on-demand webinar to hear Sophos senior security expert John Shier deep dive into how BYOD impacts your enterprise security strategy... All Security White Papers | Webcasts