Struts2 Strikes Again: The DoS Vulnerability You Didn’t See Coming!
Struts2 has a denial of service vulnerability, where attackers can send tiny requests to create enormous data structures. By specifying indices or using null values, they can crash servers due to memory overload. This flaw impacts many deserializers, making it a widespread issue.
Hot Take:
Struts2 is serving up more denial of service (DoS) than a toddler at nap time! The vulnerabilities are so glaring, they might as well have neon signs pointing to them saying, “Hack me!” It’s like leaving your front door open with a welcome mat that says ‘Free Wi-Fi and Cookies Inside.’ Time for some serious code spring cleaning, folks!
Key Points:
- Struts2 framework has a DoS vulnerability through deserialization issues.
- Attackers can exploit this by creating massive data structures with minimal requests.
- The vulnerability affects many deserializers, allowing large collections filled with `null` values.
- The problem is prevalent across a wide array of libraries, frameworks, and systems.
- Concurrent requests can amplify the attack’s impact, resulting in server crashes.
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