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ISC2 CAP Exam - Topic 5 Question 72 Discussion

Null Byte Injection is an active exploitation technique used to bypass sanity-checking filters in web applications by adding a URL-encoded null byte character to the user-supplied data. Which of the following is a URL-encoded representation of a null byte?
B) %10
A) %01
C) %25
D) %00

ISC2 CAP Exam - Topic 5 Question 72 Discussion

Actual exam question for ISC2's CAP exam
Question #: 72
Topic #: 5
[All CAP Questions]

Null Byte Injection is an active exploitation technique used to bypass sanity-checking filters in web applications by adding a URL-encoded null byte character to the user-supplied dat

a. Which of the following is a URL-encoded representation of a null byte?

Show Suggested Answer Hide Answer
Suggested Answer: B

by Fletcher at Aug 28, 2023, 09:53 PM

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Van
8 months ago
%00 is definitely the way to go!
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Britt
8 months ago
%01? Never heard of that one.
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Carry
8 months ago
Wait, I thought it was %10?
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Iluminada
8 months ago
Totally agree, %00 is the correct one!
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Marica
9 months ago
The null byte is represented as %00.
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Fannie
9 months ago
I definitely recall that null bytes can be tricky, but I think %00 is the standard URL-encoded representation.
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Natalie
9 months ago
I’m a bit confused; I thought null bytes were represented differently in some contexts. Is it really %00?
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Donte
9 months ago
I remember practicing with similar questions, and I feel like %00 was the correct answer for null byte injection.
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Una
9 months ago
I think the null byte is represented as %00, but I’m not completely sure. It’s been a while since I reviewed that section.
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Temeka
9 months ago
This is a tricky one, but I think the key is understanding how null bytes are represented in a URL-encoded format. I'm going to go with option D and hope I've got it right.
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Elza
9 months ago
Okay, I remember learning about this in class. The URL-encoded null byte is %00, so I'll select option D.
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Fernanda
9 months ago
Hmm, I'm a bit unsure about this. I know null byte injection is used to bypass filters, but I'm not totally sure about the URL-encoded representation. I'll have to think this through carefully.
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Lemuel
9 months ago
I'm pretty confident about this one. The null byte is represented by the URL-encoded %00, so I'll go with option D.
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Florinda
9 months ago
Wait, I'm a little confused. I know null byte injection is a thing, but I'm not sure about the specific encoding. I'll have to review my notes and try to eliminate the wrong answers.
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Lottie
9 months ago
This looks like a tricky one. I'll need to carefully review the exhibit and the options to determine the best connectivity method.
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Ettie
9 months ago
Okay, I think I've got this. Based on the question, the answer that makes the most sense is internal audit activity. That's the function that would be responsible for evaluating the organization's operations and information system controls.
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Jacquline
10 months ago
Alright, time to put my problem-solving skills to the test. I'll start by listing out the values for each measure/scenario and then work through the calculation.
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Brett
1 year ago
Wait, is null byte injection like the web app version of 'Hello, world!'? %00 is the answer, right?
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Rhea
1 year ago
It's a way to bypass filters by adding a null byte character to user input.
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Apolonia
1 year ago
Null byte injection is more like 'Goodbye, world!' in web applications.
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Kattie
1 year ago
Yes, %00 is the URL-encoded representation of a null byte.
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Mollie
1 year ago
Ooh, web app security, my favorite! %00 is the way to bypass those pesky filters.
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Corrie
1 year ago
Actually, it's %00 that represents a null byte in URL encoding.
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Juliann
1 year ago
I think %01 is the URL-encoded representation of a null byte.
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Doug
1 year ago
I agree, %00 is the way to go.
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Pansy
1 year ago
I'm not sure, but I think %01 is also a valid representation of a null byte.
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Billy
1 year ago
I agree with Claudia, %00 is the URL-encoded representation of a null byte.
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Glenn
1 year ago
Null byte injection, huh? Time to put on my hacker hat. %00 for the win!
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Janella
1 year ago
Yeah, %00 is the way to go for null byte injection.
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Jamal
1 year ago
I think %00 is the URL-encoded representation of a null byte.
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Annita
1 year ago
Ah, the age-old null byte trick. %00 is the way to go, no doubt about it.
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Claudia
1 year ago
I think the answer is D) %00.
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Asuncion
1 year ago
Hmm, a null byte, eh? Gotta love those sneaky little characters. %00 seems like the obvious choice here.
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