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GAQM CPEH-001 Exam - Topic 5 Question 56 Discussion

StackGuard (as used by Immunix), ssp/ProPolice (as used by OpenBSD), and Microsoft's /GS option use _____ defense against buffer overflow attacks.
A) Canary
B) Hex editing
C) Format checking
D) Non-executing stack

GAQM CPEH-001 Exam - Topic 5 Question 56 Discussion

Actual exam question for GAQM's CPEH-001 exam
Question #: 56
Topic #: 5
[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 Alpha at Aug 03, 2022, 05:23 PM

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Aja
10 months ago
Surprised to see so many options for buffer overflow!
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Sanda
10 months ago
I thought /GS was more about stack protection?
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Jose
10 months ago
Wait, isn't that just one part of the whole picture?
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Georgeanna
10 months ago
Totally agree, it's a solid method.
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Tatum
11 months ago
They all use canary defense!
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Mari
11 months ago
I thought it was B, Hex editing, but now that I think about it, that doesn't really fit with the context of buffer overflow defenses.
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Ressie
11 months ago
I recall that StackGuard and similar tools use some kind of protection mechanism, but I can't remember if it's specifically called a Canary.
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Aja
11 months ago
I think the answer might be A, Canary. I remember studying how it works to detect buffer overflows by placing a value before the return address.
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Vicente
11 months ago
I'm not entirely sure, but I feel like I've seen questions about this before. Could it be D, Non-executing stack? That sounds familiar.
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Rupert
11 months ago
Okay, I'm pretty confident that Anomaly Detector is the right answer here. It's specifically built for anomaly detection in time series data, which is exactly what the question is asking for. And it can integrate with IoT Hub, so that seems like a perfect match.
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Malika
11 months ago
Okay, let's think this through step-by-step. The key details are the cloud pod architecture, the WAN links, and the need to minimize the number of open ports.
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