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GAQM Exam CPEH-001 Topic 2 Question 102 Discussion

Actual exam question for GAQM's CPEH-001 exam
Question #: 102
Topic #: 2
[All CPEH-001 Questions]

StackGuard (as used by Immunix), ssp/ProPolice (as used by OpenBSD), and Microsoft's /GS option use _____ defense against buffer overflow attacks.

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Suggested Answer: A

Canaries or canary words are known values that are placed between a buffer and control data on the stack to monitor buffer overflows. When the buffer overflows, it will clobber the canary, making the overflow evident. This is a reference to the historic practice of using canaries in coal mines, since they would be affected by toxic gases earlier than the miners, thus providing a biological warning system.


by Thurman at Oct 23, 2024, 01:46 PM

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Hannah
1 months ago
I heard the OpenBSD guys eat, sleep, and breathe ProPolice. Gotta respect that level of dedication.
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Glory
2 days ago
C) Format checking
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Muriel
13 days ago
B) Hex editing
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Sol
14 days ago
A) Canary
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Jose
1 months ago
Hex editing? Really? That's like trying to fix a flat tire with a spoon. Canary all the way!
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Elden
24 hours ago
Format checking is also important for defense against buffer overflow attacks.
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Nadine
4 days ago
Agreed, canary is definitely the way to go.
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Linsey
6 days ago
Canary
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Cruz
1 months ago
Format checking? Psh, that's so 90s. Gotta go with the modern defense, the canary.
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Emilio
1 months ago
I'm all about that non-executing stack. It's like a bouncer at the door, keeping the bad guys out.
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Cecilia
6 days ago
D) Non-executing stack
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Andra
13 days ago
C) Format checking
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Rikki
15 days ago
B) Hex editing
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Amira
16 days ago
A) Canary
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Farrah
2 months ago
I agree with Levi, Canary is used for defense against buffer overflow attacks.
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Dannette
2 months ago
The canary is the way to go! It's like having a little bird watching over your code.
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Salome
16 days ago
C) Format checking
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Carolynn
16 days ago
I think format checking is also important in preventing buffer overflow attacks.
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Cammy
21 days ago
Yes, the canary is a great defense against buffer overflow attacks.
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Meaghan
1 months ago
A) Canary
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Levi
2 months ago
I think the answer is A) Canary.
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