- A
Unquoted service paths
Why wrong: Windows-specific vulnerability.
- B
Sudo misconfigurations
Sudo entries allowing arbitrary commands.
- C
Writable scripts in cron jobs
If a cron script is writable, an attacker can replace it.
- D
DLL hijacking
Why wrong: Windows-specific.
- E
SUID/SGID binaries
Binaries with SUID run as owner (often root).
Question 778 of 1,000
PT0-002 Attacks and Exploits Practice Question
This PT0-002 practice question tests your understanding of attacks and exploits. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
During a Linux privilege escalation attempt, a tester checks for misconfigurations that could allow running commands as root. Which of the following are potential vectors? (Select THREE.)
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Sudo misconfigurations
SUID/SGID binaries, sudo misconfigurations, and writable cron scripts are common escalation vectors.
Key principle: Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Unquoted service paths
Why it's wrong here
Windows-specific vulnerability.
- ✓
Sudo misconfigurations
Why this is correct
Sudo entries allowing arbitrary commands.
Related concept
Authentication checks who the user is.
- ✓
Writable scripts in cron jobs
Why this is correct
If a cron script is writable, an attacker can replace it.
Related concept
Authentication checks who the user is.
- ✗
DLL hijacking
Why it's wrong here
Windows-specific.
- ✓
SUID/SGID binaries
Why this is correct
Binaries with SUID run as owner (often root).
Related concept
Authentication checks who the user is.
Common exam traps
Common exam trap: authentication is not authorization
Logging in proves the user can authenticate. It does not automatically mean the user is allowed to enter privileged or configuration mode. Watch for AAA authorization, privilege level and command authorization details.
Detailed technical explanation
How to think about this question
This kind of question is testing the difference between identity and permission. A user may successfully log in to a router because authentication is working, but still fail to enter configuration mode because authorization is missing, misconfigured or mapped to a lower privilege level.
KKey Concepts to Remember
- Authentication checks who the user is.
- Authorization controls what the user is allowed to do after login.
- Privilege levels affect access to EXEC and configuration commands.
- AAA, TACACS+ and RADIUS can separate login success from command access.
TExam Day Tips
- Do not assume successful login means full administrative access.
- Look for words such as cannot enter configuration mode, privilege level, authorization or command access.
- Separate login problems from permission problems before choosing the answer.
Key takeaway
Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Real-world example
How this comes up in practice
A security analyst at a medium-sized enterprise encounters this scenario during an investigation or architecture review. The correct answer reflects best practice for the specific threat or control described. Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access. Security exam questions test whether you can match controls to threats in context — not just recall definitions.
What to study next
Got this wrong? Here's your next step.
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related PT0-002 questions on access control and AAA configuration.
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Attacks and Exploits — study guide chapter
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FAQ
Questions learners often ask
What does this PT0-002 question test?
Attacks and Exploits — This question tests Attacks and Exploits — Authentication checks who the user is..
What is the correct answer to this question?
The correct answer is: Sudo misconfigurations — SUID/SGID binaries, sudo misconfigurations, and writable cron scripts are common escalation vectors.
What should I do if I get this PT0-002 question wrong?
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related PT0-002 questions on access control and AAA configuration.
What is the key concept behind this question?
Authentication checks who the user is.
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Last reviewed: Jul 4, 2026
This PT0-002 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PT0-002 exam.
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