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Information Systems

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Oct 30, 2023

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docx

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Uploaded by MagistrateGoldfinchMaster399

 Find and discuss an example of a buffer overflow exploit. (Minimum word count 300 with references).  As the name suggests, a buffer overflow is an anomaly that occurs when a computer program sends data to a buffer beyond what is allowed or the buffer's limit, then explodes into other buffer boundaries and corrupts or overwrites the valid data that was previously in the buffer.  Buffer overflow vulnerabilities are frequently used in cyberattacks to compromise or take over target systems or apps. Attackers try to overwrite an application's memory in order to alter the program's execution path in order to take advantage of buffer overflow vulnerabilities. Private information is then made public as a result of this reaction. Attackers can purposefully introduce new instructions into an

application by injecting extra code if they are aware of the memory layout of the program in question. This allows them to access the application without authorization.  The exploit targets software programs that store data in buffers and might not have adequate boundary checks in place. An attacker overflows the buffer with input, frequently carefully constructed data meant to take advantage of the issue. The buffer is overflowed by the excessive input, overwriting data, control structures, and even return addresses in nearby memory regions.  Attackers can divert the program's execution flow to their own code by overwriting function pointers or return addresses. This can result in illegal activities, data theft, or system access. Secure programming techniques, like bounds checking, input validation, and the usage of safe libraries, are necessary to stop buffer overflow exploits. Patches and software upgrades on a regular basis are essential to address identified vulnerabilities.  Because buffer overflow exploits have been utilized in so many cyberattacks, buffer overflow vulnerabilities are a major cybersecurity threat. Keeping software updated and remaining aware of security best practices are crucial for reducing the danger of buffer overflow attacks.  How could you verify that an overflow condition exists? o Check the value of the canary against its original value to determine whether a buffer overflow has occurred. Welekwe, A., & Welekwe, A. (2023, September 27). Buffer overflow vulnerabilities and attacks explained . Comparitech. https://www.comparitech.com/blog/information-security/buffer-overflow-attacks- vulnerabilities/

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