Java Web App Error Handling
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NOW INDUSTRY SOLUTIONSPodcastTHOUGHT LEADERSHIPIndustry ObservationsSECURITY RESEARCHAviatorTechnical InsightTools and ApplicationsTrue Stories of the TRCUnsung HeroesVulnerabilitiesWhiteHat HackerKastWHITEHAT SENTINELEventsWeb Application SecurityWhiteHat Security ProductsTHREAT BULLETINSBreaking News Web Application Security Error Handling in Java web.xml johnmelton | March 09, 2012 What is it and why should I care? Error or exception handling is an important, but often ignored, part of any application. And although there’s a servlet exception handling lot to be said on the topic I’m going to cover only a few of the most critical cases in J2EE Web applications. Essentially, one of the biggest worries about exception handling is that you don’t actually handle the exception. Instead, your code − or the code of some 3rd party library you’re using − allows an exception to bubble up. Once the exception reaches the boundary of your application and enters the container, the specific container/application server you are using determines what semantics are applied in handling the exception. Often times, by default, a standard error page is applied and the exception stack trace is printed on the screen in all its glory. This is definitely a problem, because it gives attackers a lot of information about the system, and can lead to further attacks. What should I do about it? Handling this issue is fairly straightforward. The basic advice is to provide error handlers for at least java.lang.Throwable (catches any Java exceptions or errors), and provide more specific handlers for individual exceptions and http error codes
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Lab JSON API Lab Hippo sitemenus over REST Lab Tutorials 11.x Tutorials Getting Started Hello World web.xml error-page location Building a Website Relevance Trail Feeding an AngularJS App Documentation 11.x Reference Docs Releases Understand Hippo Implement Hippo Extend Hippo Integrate Hippo Run Hippo Upgrade Hippo Develop Hippo https://www.whitehatsec.com/blog/error-handling-in-java-web-xml/ Use Hippo Report an Issue Releases Release Notes & Docs Community Get Involved Forum Guidelines GetTogether 2014 GetTogether 2013 Community Update Releases Understand Hippo Implement Hippo Development Environment Setup Content Repository Content Modeling Container Configuration Component Development Templating Multi Domain, Channel, Lingual setup Channel Manager Web Files URLs Search Forms I18N support Rewriting Rich Text https://www.onehippo.org/library/concepts/error-pages-and-error-handling/1.-handling-error-codes-and-exceptions-by-the-web.xml.html Fields Error Pages By web.xml By Catch All Sitemap Item Simple Exception Handling Advanced Exception Handling Faceted Navigation Session Pooling Security Relevance Module HST Synchronous Event Publishing Custom JCR Event Listener Troubleshoot Static Webapp Resources Serving Binary Content Resources Quick Wins Content and Configuration Updates Release Management Extend Hippo Integrate Hippo Run Hippo Upgrade Hippo Develop Hippo Use Hippo Report an Issue See also... 2. Add a catch-all sitemap item that creates a dynamic 404 page 3. Simple exception handling HST error pages and error handling 4. Advanced exception handling Implement Hippo > Error Pages > By web.xml Show history 1. Handling error codes and exceptions by the web.xml In your web.xml you can configure error-page elements that act upon some error-code or exception-type. Typically, you might configure at the end of your web.xml the following: Επιλέξτε τη γλώσσα σας. Κλείσιμο Μάθετε περισσότερα View this message in English Το YouTube εμφανίζεται στα Ελληνικά. Μπορείτε να https://www.youtube.com/watch?v=bQ0BOuxu82A αλλάξετε αυτή την προτίμηση παρακάτω. Learn more https://www.owasp.org/index.php/Error_Handling,_Auditing_and_Logging You're viewing YouTube in Greek. You can change this preference below. Κλείσιμο Ναι, θέλω να τη κρατήσω Αναίρεση Κλείσιμο Αυτό το βίντεο δεν είναι διαθέσιμο. Ουρά web.xml error-page παρακολούθησηςΟυράΟυρά παρακολούθησηςΟυρά Κατάργηση όλωνΑποσύνδεση Φόρτωση... 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Δημοσ Debug errors 6.3 Exception handling 6.4 Functional return values 7 Detailed error messages 7.1 How to determine if you are vulnerable 7.2 How to protect yourself 8 Logging 8.1 Where to log to? 8.2 Handling 8.3 General Debugging 8.4 Forensics evidence 8.5 Attack detection 8.6 Quality of service 8.7 Proof of validity 8.8 Logging types 9 Noise 9.1 How to protect yourself 10 Cover Tracks 10.1 How to protect yourself 11 False Alarms 11.1 How to protect yourself 11.2 Denial of Service 11.3 How to protect yourself 12 Destruction 12.1 How to protect yourself 13 Audit Trails 13.1 How to determine if you are vulnerable 13.2 How to protect yourself 14 Further Reading 15 Error Handling and Logging Objective Many industries are required by legal and regulatory requirements to be: Auditable – all activities that affect user state or balances are formally tracked Traceable – it’s possible to determine where an activity occurs in all tiers of the application High integrity – logs cannot be overwritten or tampered with by local or remote users Well-written applications will dual-purpose logs and activity traces for audit and monitoring, and make it easy to track a transaction without excessive effort or access to the system. They should possess the ability to easily track or identify potential fraud or anomalies end-to-end. Environments Affected All. Relevant COBIT Topics DS11 – Manage Data – All sections should be reviewed, but in particular: DS11.4 Source data error handling DS11.8 Data input error handling Description Error handling, debug messages, auditing and logging are different aspects of the same topic: how to track events within an application: Best practices Fail safe – do not fail open Dual purpose logs Audit logs are legally protected – protect them Reports and search logs using a read-only copy or complete replica Error Handling Error handling takes two forms: structured e