Format String Attack
Format String Attack is a type of computer attack that exploits a vulnerability in the way programs format strings. In simple terms, a program may use a string format that allows a user to input their own values, such as a name or email address. However, if a malicious user can input a specially crafted string that contains specific format characters, such as %x or %s, they can manipulate the program to provoke unintended behaviors.
For example, an attacker might provide a string with a format specifier that reads from memory, leaks sensitive data, or even executes arbitrary code on the computer. This is a significant security flaw that can allow attackers to take control of a system or steal sensitive information.
To prevent Format String Attacks, developers can use secure coding practices such as input validation and limiting access to sensitive data. Additionally, software updates and patches can fix known vulnerabilities that attackers may exploit. It is essential to be cautious when opening files or inputting data, especially from untrusted sources.