CEH v13 312-50v13 Updated Exam

This technique is known as Boolean-Based Blind SQL Injection, as defined in CEH v13 Web Application Hacking. When applications suppress database errors and return generic responses, attackers use conditional statements to infer database behavior.

By comparing responses to true (1=1) and false (1=2) conditions, the attacker deduces whether injected SQL is being executed successfully.

CEH v13 distinguishes this from:

Error-based SQLi (visible DB errors)

UNION-based SQLi (data extraction)

Time-based SQLi (response delays)

Boolean-based blind SQL injection relies solely on content differences, making option C correct.

The Certified Ethical Hacker (CEH) Malware Threats module explains that attackers often abuse legitimate system services to blend malicious traffic with normal system behavior. Background Intelligent Transfer Service (BITS) is a Windows service designed to transfer files in the background using idle network bandwidth.

Attackers leverage BITS because its traffic closely resembles legitimate Windows Update traffic, which is commonly allowed through firewalls and proxy servers. CEH documentation states that BITS-based malware can download payloads, upload stolen data, and maintain persistence without triggering security alerts.

Option A is correct because BITS traffic appears legitimate and trusted, making it difficult for security devices to distinguish malicious usage.

Option B is incorrect because BITS does not operate exclusively through HTTP tunneling; it primarily uses HTTP/HTTPS in a legitimate manner.

Option C is incorrect because IP fragmentation is not a core feature of BITS.

Option D is incorrect because BITS does not rely on encrypted DNS traffic.

CEH emphasizes that living-off-the-land (LotL) techniques—using native tools like BITS—are increasingly favored by attackers due to their stealth and reliability.

According to the CEH System Hacking and Web Application Security modules, Man-in-the-Browser (MitB) attacks are among the most sophisticated and difficult session-hijacking techniques to detect. In MitB attacks, malware operates inside the victim’s browser, allowing attackers to intercept, modify, or inject transactions after authentication has occurred.

CEH documentation highlights that MitB attacks bypass:

Multi-factor authentication

Encrypted cookies

HTTPS/TLS protections

Because the malicious activity occurs at the browser level, security controls perceive transactions as legitimate.

Option B is correct.

Option A (XSS) is detectable via content security policies.

Option C is mitigated by regenerating session IDs.

Option D is ineffective against encrypted sessions.

CEH emphasizes MitB attacks as a critical threat to online banking systems.

CEH IoT security modules describe insecure network services as vulnerabilities arising when IoT devices communicate over unencrypted channels, use unauthenticated update mechanisms, or expose services that fail to validate data integrity. When operational commands and firmware updates are transmitted over HTTP without cryptographic safeguards, attackers can intercept, replay, or modify the data stream. Firmware integrity verification is a critical component of secure device lifecycle management. Without it, adversaries can perform firmware injection, allowing them remote control, persistent compromise, or sabotage of device functionality. This aligns directly with insecure network services, which CEH defines as improperly protected communication mechanisms and service interactions within IoT ecosystems. Insecure ecosystem interfaces generally relate to cloud APIs and web dashboards, insecure default settings involve weak credentials or factory configurations, and insufficient privacy protection relates to data confidentiality rather than command manipulation. The described scenario most clearly fits insecure network services.