Remote Code Execution in Apache Struts Framework via OGNL Expression Injection
A critical vulnerability in Apache Struts 2.5.0 through 2.5.30 allows remote attackers to execute arbitrary code via crafted OGNL expressions in HTTP request parameters when Dynamic Method Invocation is enabled.
This section explains the vulnerability in everyday language, so anyone can understand the risk and impact.
This is a serious security flaw in Apache Struts, a popular framework used to build web applications. The vulnerability allows hackers to remotely take control of web servers by sending specially crafted web requests.
When a hacker exploits this vulnerability, they can run any commands they want on the server, potentially stealing data, installing malware, or completely taking over the system. This is particularly dangerous because the attack can be performed by anyone who can reach the web server over the internet, and it doesn't require any special access or passwords.
This vulnerability affects many versions of Apache Struts that organizations use to run their websites and web applications. It's especially concerning because Apache Struts is widely used by large companies and government agencies.
Affected Products
Remediation
1. Upgrade Apache Struts to version 2.5.31 or later
2. If immediate upgrade is not possible, disable Dynamic Method Invocation by setting struts.enable.DynamicMethodInvocation=false in struts.xml
3. Implement WAF rules to block requests containing suspicious OGNL expressions
4. Monitor systems for exploitation attempts