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Session poisoning (also referred to as "session data pollution" and "session modification") is a method to exploit insufficient input validation within a server application. Typically a server application that is vulnerable to this type of exploit will copy user input into session variables. The underlying vulnerability is a state management ...
Session (computer science) In computer science and networking in particular, a session is a time-delimited two-way link, a practical (relatively high) layer in the TCP/IP protocol enabling interactive expression and information exchange between two or more communication devices or ends – be they computers, automated systems, or live active ...
Since PHP 4.0.1 create_function(), a thin wrapper around eval(), allowed normal PHP functions to be created during program execution; it was deprecated in PHP 7.2 and removed in PHP 8.0 in favor of syntax for anonymous functions or "closures" that can capture variables from the surrounding scope, which was added in PHP 5.3.
Store a session variable containing a time stamp of the last access made by that SID. When that SID is used again, compare the current timestamp with the one stored in the session. If the difference is greater than a predefined number, say 5 minutes, destroy the session. Otherwise, update the session variable with the current timestamp.
A Session object, for example, represents a session that maintains the state of variables from page to page. The Active Scripting engine's support of the Component Object Model enables ASP websites to access functionality in compiled libraries such as dynamic-link libraries .
PHP generally follows C syntax, with exceptions and enhancements for its main use in web development, which makes heavy use of string manipulation. PHP variables must be prefixed by " $ ". This allows PHP to perform string interpolation in double quoted strings, where backslash is supported as an escape character.
If the resetpassword.php accepts these values, it is vulnerable to a semantic URL attack. The new password of the user002 e-mail address will be generated and sent to alternative@emailexmaple.com which causes user002's e-mail account to be stolen. One method of avoiding semantic URL attacks is by using session variables.
Client-side user session is maintained by either a cookie or by encoding the session ID in the URL itself. ASP.NET supports three modes of persistence for server-side session variables: In-process mode The session variables are maintained within the ASP.NET process. This is the fastest way; however, in this mode the variables are destroyed when ...