Indirection redirection memory
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- #Indirection redirection memory code#
They just went to the three-point line and threw the balls hoping they would go through the basket. You can find the source material in the Secure Coding Dojo repo.By the fifth day of practice nine of the twelve boys quit working on shooting three-pointers. You’re free to use them in your own presentations and training materials. Follow the project on Github and try out the application using docker-compose.Īttack-Grams are a set of diagrams explaining basic security flaws. The Secure Coding Dojo is an open source training platform that is dedicated to teaching developers about programming flaws, exploits and secure coding practices.
#Indirection redirection memory code#
If the parameter is numeric or a GUID, validation is more straightforward than having to validate a person name or file path.ĭo you think you can identify security flaws during regular code reviews? Test your skill by solving this quiz. instead of userEmail= use userEmailId= 42.
#Indirection redirection memory full#
Open Redirect is made possible by code that allows the redirect URL to be controlled by the user.įor example a redirect to a single sign on service will reference the full URL of the service: The attack-gram below describes the scenario:ĭiagram describing a phishing attack where a trusted site redirects to a malicious one
Open Redirect allows attackers to leverage legitimate sites to trick users into downloading malware or provide confidential information.
Open Redirect is another SANS Top 25 item, at #22. If the application instead using a user id to determine where to send the report, the attack is mitigated: 42 Preventing Open Redirect The application will then e-mail the report to the attacker. The attacker e-mails a legitimate user of the system a link including an unauthorized e-mail address: d. The report generation page includes an e-mail parameter which specifies the address where the report will be sent when ready. Imagine an application that has a report generation function for confidential business data. Preventing an Authorization Bypass Scenario
#Indirection redirection memory software#
This best practice can be used in a similar way to prevent other software flaws. The file is accessed indirectly preventing the Path Traversal attack and is an example of leveraging the Indirect Object Reference strategy. In contrast bottom.jsp is using a file identifier to map the requested file to an allowed collection of file paths. Because the file object is being accessed directly this is also known as a direct object reference. /././././././etc/passwd the file path then becomes /public/./././././././etc/passwd and the attacker will be served an operating system file instead. Then it returns the contents of the resulting file path. That code takes the file name from the user and without any validation concatenates it to a public directory. If you chose top.jsp as the vulnerable code you were correct. Code snippets for an application that manipulates files.