CEH v13 312-50v13 Full Course Free

The Snort rule in the image is detecting suspicious bind attempts over DCERPC (Distributed Computing Environment/Remote Procedure Call), specifically targeting ports 135 (RPC) and 445 (SMB) with crafted content. The rule references CVE CAN-2003-0352.

CVE-2003-0352 is associated with the DCOM RPC vulnerability in Microsoft Windows that was exploited by the MS Blaster (also known as Lovsan) worm in 2003.

Key Indicators from the Snort Rule:

alert tcp $EXTERNAL_NET any -> $HOME_NET 135

content includes DCERPC binding pattern (|05| and |0b| with specific binary patterns)

Reference to CVE-2003-0352

Class type: attempted-admin

The MS Blaster worm exploited this vulnerability by sending a specially crafted RPC request to port 135, allowing remote code execution.

From CEH v13 Courseware:

Module 6: Malware Threats

Module 11: Session Hijacking

Discussion of historic worms and their exploit signatures, including MS Blaster.

Incorrect Options:

A. WebDav: Typically uses HTTP/HTTPS and was exploited by Nimda.

B. SQL Slammer: Targeted UDP port 1434 (SQL Server), not TCP 135/445.

D. MyDoom: Spread via email and exploited Windows file-sharing mechanisms (port 3127), not DCERPC.

Risk assessment is a key process in security management that identifies, evaluates, and prioritizes risks to organizational operations and assets. It considers various controls and safeguards to mitigate those risks.

Administrative safeguards are part of the components used in risk assessments and include:

Policies

Procedures

Training

Security awareness programs

Incident response planning

From CEH v13:

Module 1: Introduction to Ethical Hacking

Module 20: Cryptography (as it discusses risk management and governance)

Topic: Security Controls and Risk Management Frameworks

CEH v13 Official Courseware states:

“Administrative controls, also known as administrative safeguards, form a critical component of risk assessments. These include documented security policies, user training, security audits, and incident response plans that help an organization manage and reduce risks.”

Incorrect Options:

B. Physical security is a type of safeguard but not typically referred to as a "component" of a risk assessment itself.

C. DMZ (Demilitarized Zone) is a network architecture concept, not a risk assessment component.

D. Logical interface refers to system architecture and network segmentation—not risk assessment methodology.

Whitelist validation (also known as allowlist validation) is a robust defensive strategy where only pre-approved input formats are accepted. This includes:

Restricting input to specific data types (e.g., integer, string)

Limiting size, format, or allowed characters

Accepting only expected values (e.g., country codes, age ranges)

This practice is highly effective in mitigating SQL injection and other input-based attacks.

Incorrect Options:

A. Output encoding prevents XSS by encoding output but doesn't validate input.

B. Enforcing least privilege is an access control principle.

D. Blacklist validation is less secure and attempts to block known bad inputs, which may be bypassed.

Reference – CEH v13 Official Courseware:

Module 14: Hacking Web Applications

Section: “Input Validation and SQL Injection Mitigation”

Subsection: “Whitelist vs Blacklist Input Validation”

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Comprehensive and Detailed Explanation:

IDS cannot easily detect malicious content in encrypted traffic. Since the payload is encrypted (e.g., HTTPS, SSL/TLS), it is unreadable without decryption.

Statement B is therefore FALSE.

From CEH v13 Courseware:

Module 13: IDS, Firewalls and Honeypots → Limitations of IDS