Semmle security researcher Man Yue Mo has disclosed a critical remote code execution vulnerability in the popular Apache Struts web application framework that could allow remote attackers to run malicious code on the affected servers.
Apache Struts is an open source framework for developing web applications in the Java programming language and is widely used by enterprises globally, including by 65 percent of the Fortune 100 companies, like Vodafone, Lockheed Martin, Virgin Atlantic, and the IRS.
The vulnerability (CVE-2018-11776) resides in the core of Apache Struts and originates because of insufficient validation of user-provided untrusted inputs in the core of the Struts framework under certain configurations.
The newly found Apache Struts exploit can be triggered just by visiting a specially crafted URL on the affected web server, allowing attackers to execute malicious code and eventually take complete control over the targeted server running the vulnerable application.
Struts2 Vulnerability – Are You Affected?
All applications that use Apache Struts—supported versions (Struts 2.3 to Struts 2.3.34, and Struts 2.5 to Struts 2.5.16) and even some unsupported Apache Struts versions—are potentially vulnerable to this flaw, even when no additional plugins have been enabled.
images from Hacker News