Meow's CyberAttack - Application/Server Attacks - MemoryBuffer - Integer Overflow

• Meow’s CyberAttack - Application/Server Attacks - Memory Buffer Vulnerabilities - Integer Overflow
  • Integer Overflow

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Meow’s CyberAttack - Application/Server Attacks - Memory Buffer Vulnerabilities - Integer Overflow

book: Security+ 7th

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Integer Overflow

• use or create a numeric value that is too big for an application to handle

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• Result: the application gives inaccurate results.

Example

• an application reserves 8 bits to store a number
  • it can store any value between 0 and 255.
  • If the application attempts to multiply two values such as 95 × 59, the result is 5,605.
  • This number cannot be stored in the 8 bits, causes integer overflow error.
  • double-check the size of buffers, ensure they can handle any data generated by the applications.

• In some situations, an integer overflow error occurs if an application expects a positive number, but receives a negative number instead.

• If the application doesn’t have adequate error and exception-handling routines, this might cause a buffer overflow error.