CWE-600: Uncaught Exception in Servlet

What is Uncaught Exception in Servlet ?

• Overview: Uncaught Exception in Servlet refers to a situation where a Servlet program does not handle exceptions properly, leading to potential exposure of sensitive information through error messages. This oversight can provide attackers with critical insights into the application's inner workings.

• Exploitation Methods:

• Attackers can intentionally cause exceptions to be thrown in the servlet, prompting the container to return detailed error responses.
• Common attack patterns include sending malformed input or triggering specific conditions that cause exceptions to be thrown, aiming to extract debugging information from the error messages.

• Security Impact:

• Direct consequences include the exposure of sensitive debugging information such as stack traces, SQL queries, and server configurations.
• Potential cascading effects involve attackers leveraging the exposed information to identify and exploit other vulnerabilities within the system or related components.
• Business impact can range from data breaches and system downtime to reputational damage and financial loss due to exploitation of the exposed information.

• Prevention Guidelines:

• Specific code-level fixes include implementing try-catch blocks around code that might throw exceptions and providing user-friendly error messages without sensitive details.
• Security best practices involve configuring the servlet container to handle exceptions with generic error pages and ensuring error logging is secure and not exposed to users.
• Recommended tools and frameworks include using robust logging libraries like Log4j or SLF4J to manage log output securely and employing frameworks that support global exception handling strategies, such as Spring Boot's @ControllerAdvice.

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Technical Details

Likelihood of Exploit: Not specified

Affected Languages: Not specified

Affected Technologies: Not specified