Fail-open Error Handling
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Improper Error Handling Vulnerability
Phishing Wireless Networking Encryption Best Practices Standards Secure desktop computing improper error handling example Secure servers Secure data deletion Securing printers Tips for safe computing Computing policies More in-depth information fail open or fail close for Local support providers System administrators Security initiatives Critical Component compliance Authentication & authorization Penn Security & Privacy Assessment (SPIA) Security Liaisons (Restricted Access) Secure Share Secure
Fail Open Meaning
Space Vulnerability Scanner Related links Electronic privacy PennKey Viruses Worms, trojans, backdoors Top 10 Web Application Security Vulnerabilities Based on OWASP Research A7: Improper Error Handling A7.1 Description Improper handling of errors can introduce a variety of security problems for a web site. The most common problem is when detailed internal error messages such as stack traces,
Fail Open Valve
database dumps, and error codes are displayed to the user (hacker). These messages reveal implementation details that should never be revealed. Such details can provide hackers important clues on potential flaws in the site and such messages are also disturbing to normal users. Web applications frequently generate error conditions during normal operation. Out of memory, null pointer exceptions, system call failure, database unavailable, network timeout, and hundreds of other common conditions can cause errors to be generated. These errors must be handled according to a well thought out scheme that will provide a meaningful error message to the user, diagnostic information to the site maintainers, and no useful information to an attacker. For example, if a hacker enters an invalid command, the web server sends an error message back to the end-user. This message should be generic, but often times presents excessive information such as "User Name Correct, Password Incorrect." That could help the attacker focus their illicit activities on the password cracking activities. Even when error messages don't provide a lot of detail, inconsistencies
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Improper Error Handling Definition
Awareness Phishing Healthcare Information Security ContributorsArchive 2015 2014 2013 2012 2011 2010 ArchiveCareersJob BoardSIQ at which layers should access control be enforced Phishing Simulator Fail-Open Authentication in IT Security Posted in Hacking on January 10, 2012 Share Tweet Ethical Hacking Boot Camp Our most popular course! http://www.upenn.edu/computing/security/swat/SWAT_Top_Ten_A7.php Click Here! Skillset What's this? Practice for certification success with the Skillset library of over 100,000 practice test questions. We analyze your responses and can determine when you are ready to sit for the test. Authentication: Fail-Open What do you mean by Fail-Open authentication? Fail-open authentication is the http://resources.infosecinstitute.com/fail-open-authentication/ situation when the user authentication fails but results in providing open access to authenticated and secure sections of the web application to the end user. What is the impact when authentication does not fail securely? Users can bypass authentication and gain access to authenticated section of the web application. Failure modes should not result in successful authentication All unauthenticated decision must result in LOGOUT What are the conditions that trigger Fail-Open authentication? The following conditions need to be met: A server side variable value is set. This authentication decision for the rest of the pages in the web application is made on the basis of the value of this variable. The provided user input (username/password) triggers an exception. Since the control directly passes to the exception handler and bypasses the code that handles failed authentication, users are able to access the unauthenticated section,
Error Handling [Fail Open Authentication Scheme] ulycosta's channel SubscribeSubscribedUnsubscribe4242 Loading... Loading... Working... Add to Want to watch this again later? Sign in to add this https://www.youtube.com/watch?v=Lz54gaAuvkY video to a playlist. Sign in Share More Report Need to http://stackoverflow.com/questions/17337602/how-to-get-error-message-when-ifstream-open-fails report the video? Sign in to report inappropriate content. Sign in Statistics 915 views 0 Like this video? Sign in to make your opinion count. Sign in 1 0 Don't like this video? Sign in to make your opinion count. Sign in 1 error handling Loading... Loading... Loading... Rating is available when the video has been rented. This feature is not available right now. Please try again later. Uploaded on Jun 29, 2011 Category Science & Technology License Standard YouTube License Loading... Autoplay When autoplay is enabled, a suggested video will automatically play next. Up next Webgoat - Improper improper error handling Error Handling - Fail Open Authentication Scheme - Duration: 4:14. Lim Jet Wee 1,104 views 4:14 Hacking Web Applications - Part 12 - Improper Error Handling - Duration: 1:18. Hacking4Security 32 views 1:18 OWASP WebGoat 6 - Improper Error Handling - Fail Open Authentication Scheme - Duration: 2:39. Lim Jet Wee 285 views 2:39 WebGoat 5.3 - Basic Authentication - Duration: 3:55. William Tavares 807 views 3:55 Webgoat: Insecure Communication [Insecure Login] - Duration: 4:10. ulycosta 585 views 4:10 WebGoat - Shopping Cart Concurrency Flaw - Duration: 1:45. Maurício Ariza 437 views 1:45 Improper Error Handling Fail Open Authentication Scheme - Duration: 1:55. webgoatjr jr 28 views 1:55 WebGoat - The Challenge - Duration: 10:19. Rafael Giollo 373 views 10:19 WebGoat v5.3 - Improper Error Handling - Fail Open Authentication Scheme - Duration: 1:00. Gustavo Gerhardt Siqueira Dimpério 472 views 1:00 WebGoat - Improper Error Handling - Duration: 1:02. Rafael Giollo 71 views 1:02 Webgoat: Session Management Flaws [Spoof a
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How to get error message when ifstream open fails up vote 39 down vote favorite 7 ifstream f; f.open(fileName); if ( f.fail() ) { // I need error message here, like "File not found" etc. - // the reason of the failure } How to get error message as string? c++ error-handling stream std share|improve this question edited Mar 7 '14 at 2:28 lpapp 35.4k134766 asked Jun 27 '13 at 7:51 0123456789 24.2k2191156 2 possible duplicate of C++ ifstream Error Checking –Matthieu Rouget Jun 27 '13 at 8:19 1 possible duplicate of Can you get a specific error condition when a C++ stream open fails? –arne Jun 27 '13 at 8:28 3 @Alex Farber: Sure. cerr << "Error code: " << strerror(errno); // Get some info as to why seems relevant to the question. –Matthieu Rouget Jun 27 '13 at 8:28 @MatthieuRouget: Check the possible duplicate I posted -- it seems this is non-standard behaviour only implemented by gcc. –arne Jun 27 '13 at 8:29 @MatthieuRouget: strerror(errno) works. Post this as answer, I will accept it. –0123456789 Jun 27 '13 at 8:37 add a comment| 3 Answers 3 active oldest votes up vote 30 down vote accepted Every system call that fails update the errno value. Thus, you can have more information about what happens when a ifstream open fails by using something like : cerr << "Error: " << strerror(errno); However, since every system call updates the global errno value, you may have issues in a multithreaded application, if another system call triggers an error between the execution of the f.open and use of errno. Edit (thanks to Arne Mertz and other people in the comments): e.what() seemed at first to be a more C++-idiomatically correct way of implementing this, however the string returned by this function is implementation-dependant and (at least in G++'s libstdc++) this function useful information about the reason behind the error... share|improve this answer edited Jun 27 '13 at 11:53 answered Jun 27 '13 at 9:02 Matthieu Rouget 2,026720 1 e.what() doe