CEH Enumeration and System Hacking Practice Question
This CEH practice question tests your understanding of enumeration and system hacking. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 penetration test, the tester runs `ldapsearch -x -H ldap://192.168.1.20 -b 'dc=domain,dc=com' '(objectclass=*)'`. The output reveals user objects with 'userPassword' attributes in clear text. Which type of enumeration is being performed, and what is the security implication?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
LDAP enumeration; it indicates that the LDAP server stores passwords in plaintext, posing a credential theft risk
The `ldapsearch` command is used to query an LDAP directory service. The option `-x` specifies simple authentication, and the filter `(objectclass=*)` retrieves all entries. The output revealing `userPassword` attributes in clear text indicates that the LDAP server is storing passwords in plaintext, which is a severe security risk because an attacker can directly harvest credentials for lateral movement or privilege escalation.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
NFS enumeration; it indicates that NFS shares are world-readable
Why it's wrong here
NFS enumeration uses showmount, not ldapsearch.
✓
LDAP enumeration; it indicates that the LDAP server stores passwords in plaintext, posing a credential theft risk
Why this is correct
Correct identification and implication.
Related concept
Read the scenario before looking for a memorised answer.
✗
SNMP enumeration; it indicates that the community string is weak
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse the `ldapsearch` command with other enumeration tools (like `snmpwalk` or `smtp-user-enum`) and fail to recognize that the specific command and output directly indicate LDAP enumeration with plaintext password exposure.
Trap categories for this question
Command / output trap
NFS enumeration uses showmount, not ldapsearch.
Detailed technical explanation
How to think about this question
LDAP stores attributes in a hierarchical directory tree; the `userPassword` attribute is defined in RFC 4519 and should be stored as a hash (e.g., SSHA, MD5) or using a password policy. In a real-world scenario, an attacker who finds plaintext passwords can use them to authenticate to other services (e.g., SSH, web apps) if the same credentials are reused, making this a critical finding in a penetration test report.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A junior network technician can log in to a core router but cannot reach the enable prompt or configuration mode. The AAA server is authenticating the login — but the authorisation policy only grants privilege level 1, not 15. Authentication (who you are) is working; authorisation (what you can do) is not.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CEH question in full detail.
Enumeration and System Hacking — This question tests Enumeration and System Hacking — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: LDAP enumeration; it indicates that the LDAP server stores passwords in plaintext, posing a credential theft risk — The `ldapsearch` command is used to query an LDAP directory service. The option `-x` specifies simple authentication, and the filter `(objectclass=*)` retrieves all entries. The output revealing `userPassword` attributes in clear text indicates that the LDAP server is storing passwords in plaintext, which is a severe security risk because an attacker can directly harvest credentials for lateral movement or privilege escalation.
What should I do if I get this CEH question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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