developers of the web application ------- buffer which is large enough
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Buffer overflow occurs when a program tries to store more data in a temporary storage area than it can hold. Writing outside the allocated memory area can corrupt the data, crash the program or cause the execution of malicious code that can allow an attacker to modify the target process address space.
Description: Buffer overflow occurs when data that is written to buffer ends up corrupting data values in memory addresses as well. Buffer overflow attacks happen when bad programming practices (that supply the framework) leave open vulnerabilities. It is common in a few programming languages because they expose low level details of buffers for data types. Many memory manipulation functions in programming language do not operate bounds checking and can quickly overwrite the allocated buffers they operate upon. This is a common mistake in web application development. One needs to allocate buffers that are large enough or check for overflow problems. Buffer overflow can be present in web applications that serve the static and dynamic expression. Attackers use buffer overflows to damage the execution stack of web applications. It is not like the typical e-mail virus where users can protect themselves by not opening the attached files. In buffer overflow attacks, users do not even have to open the message to enable the attack. By detecting a variable within some bounds before it is used can prevent buffer overflows. In buffer overflow attacks, the additional data may contain codes designed to turn on specific actions, in effect conveying new instructions to the attacked computer.
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