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GAQM Exam CEH-001 Topic 13 Question 3 Discussion

Actual exam question for GAQM's CEH-001 exam
Question #: 3
Topic #: 13
[All CEH-001 Questions]

The programmers on your team are analyzing the free, open source software being used to run FTP services on a server. They notice that there is an excessive number of fgets() and gets() on the source code. These C++ functions do not check bounds. What kind of attack is this program susceptible to?

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Suggested Answer: A

C users must avoid using dangerous functions that do not check bounds unless they've ensured that the bounds will never get exceeded. A buffer overflow occurs when you write a set of values (usually a string of characters) into a fixed length buffer and write at least one value outside that buffer's boundaries (usually past its end). A buffer overflow can occur when reading input from the user into a buffer, but it can also occur during other kinds of processing in a program.


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