Buffer Overflows - CompTIA Security+ SY0-701 - 2.3

Front

What is a buffer overflow?

Back

Writing more data into a buffer than it can hold

Front

Why is bounds checking important in applications?

Back

To prevent buffer overflows

Front

How many bytes was Variable A restricted to in the example?

Back

8

Front

What does a buffer overflow potentially affect in memory?

Back

Adjacent memory

Front

What happens if the attacker writes 9 bytes into an 8-byte buffer?

Back

The 9th byte overflows into adjacent memory

Front

What is the purpose of an attacker probing an application?

Back

To find buffer overflow vulnerabilities

Front

What is one possible goal of a buffer overflow attack?

Back

Gain unauthorized access

Front

What value of Variable B grants administrator access? Options: < 2000, 1979, 21000, 23999, ≥ 24000

Back

≥ 24000

Front

What hexadecimal value does the character 'e' represent?

Back

0x65

Front

What is the decimal value of 0x65?

Back

101