The countermeasures to a buffer overflow are as follows:
* Perform manual auditing of the code.
* Stack execution should be disabled.
* Take the support of the functions which are not the cause of the buffer overflow.
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* Take compiler support. For example, Java automatically checks if an array index is within the proper bounds. Use compilers such as Java instead of C to avoid buffer overflow attacks. Use tools such as StackGuard and Immunix System to avoid buffer overflows.
We all know that XSS is the most common exploit to be found in any website. However, different forms of XSS have different uses, as i will cover in this
* Stack based overflows (direct RET overwrite) : (Tutorial Part 1) http://www.corelan.be:8800/index.php/2009/07/19/exploit-writing-tutorial-part-1-stack-based-overflows/ * Jumping to shellcode : (Tutorial Part 2) http://www.corelan.be:8800/index.php/2009/07/23/writing-buffer-overflow-exploits-a-quick-and-basic-tutorial-part-2/ * Stack based overflows – SEH (Tutorial Part 3)
Green Dam Youth Escort is the censor ware developed and distributed by Chinese government to filter ‘harmful’ content. Here are some details about the working of the software. ‘Green Dam-Youth