CVE-2017-1099 is a vulnerability discovered in the Apache Struts web application framework, which could allow an attacker to remotely execute arbitrary code on vulnerable systems. The flaw exists due to a weakness in the way that the framework handles certain user data inputs, making it possible for attackers to inject malicious code into the application and gain control over the system. This vulnerability was assigned a CVSS score of 9.8 out of 10, indicating its severity.
In March 2017, security researchers identified this vulnerability and alerted the Apache Struts development team. A patch was quickly released to address the issue, and users were advised to update their software as soon as possible. However, many organizations failed to install the patch in a timely manner, leaving themselves open to attack.
Within days of the patch being released, cybercriminals began exploiting the vulnerability in various attacks, including attempts to steal sensitive data or compromise entire systems. One notable attack involved the breach of Equifax, one of the largest credit reporting agencies in the United States, which exposed the personal information of millions of people. The Equifax breach demonstrated the real-world impact of failing to address critical vulnerabilities promptly and highlights the need for organizations to prioritize software updates and security patches.