Maximizing SQL Injection Data Extraction Volume

312-50v12 By islever Editorial Last updated

SQL Injection

Short answer

D Calculating E=(4*2*z)*u shows that z=400 and u=4 results in the highest total extracted data volume of 12,800.

Question

In an intricate web application architecture using an Oracle database, you, as a security analyst, have identified a potential SQL Injection attack surface. The database consists of 'x' tables, each with 'y' columns. Each table contains 'z' records. An attacker, well-versed in SQLi techniques, crafts 'u' SQL payloads, each attempting to extract maximum data from the database. The payloads include 'UNION SELECT' statements and 'DBMS_XSLPROCESSOR.READ2CLOB' to read sensitive files. The attacker aims to maximize the total data extracted 'E=xyz*u'. Assuming 'x=4', 'y=2', and varying 'z' and 'u', which situation is likely to result in the highest extracted data volume?
  1. z=600, u=2: The attacker devises 2 SQL payloads, each aimed at tables holding 600 records, affecting all columns across all tables.
  2. z=550, u=2: Here, the attacker formulates 2 SQL payloads and directs them towards tables containing 550 records, impacting all columns and tables.
  3. z=500, u=3: The attacker creates 3 SQL payloads and targets tables with 500 records each, exploiting all columns and tables.
  4. z=400, u=4: The attacker constructs 4 SQL payloads, each focusing on tables with 400 records, influencing all columns of all tables. Correct Answer

Key Takeaways

The exam tests basic arithmetic application to security metrics; the trap is assuming more payloads always win without checking if higher record counts in fewer payloads yield a larger total.

This question tests the calculation of total data volume extracted via SQL injection based on table count, column count, record count, and payload frequency. It establishes that maximizing the product of these variables determines the highest potential data breach size.

Common mistake: Many learners incorrectly choose C because they focus on the high number of payloads (3) or miscalculate the multiplication, failing to realize D yields the highest total value.

Expert Analysis

Why the Answer Is Correct

To determine the highest extracted data volume, we must calculate E = x y z u for each option using the fixed values x=4 and y=2. Option A yields 426002 = 9,600. Option B yields 425502 = 8,800. Option C yields 425003 = 12,000. Option D yields 42400*4 = 12,800. Since 12,800 is the largest value, D is the correct answer.

Why the Other Options Are Wrong

Options A and B result in significantly lower totals (9,600 and 8,800 respectively). Option C is the closest distractor with 12,000, but it falls short of D's 12,800. The error lies in underestimating the impact of increasing 'u' (payloads) even when 'z' (records) decreases.

Community Comment Notes

The community consensus strongly supports D, with users like smoce and insaniunt providing the exact mathematical breakdown confirming D as the maximum value. Some users expressed hesitation about the question's validity, but the math is unambiguous. Comments like "Answer is D" reflect a shared understanding of the calculation required.

Exam Strategy

When faced with scenario-based questions involving formulas, write out the equation clearly before evaluating options. Do not rely on intuition; perform the specific arithmetic for each choice to find the absolute maximum or minimum.

Frequently Asked Questions

Why is option C incorrect if it has more payloads than A or B?

Option C has 3 payloads, but the total volume depends on the product of all factors. While C has more payloads than A/B, D has more payloads than C and the math confirms D > C.

Does DBMS_XSLPROCESSOR.READ2CLOB affect the calculation?

No. The question provides a specific formula E=xyz*u to quantify volume. The specific SQL commands are context for the attack type but do not change the numerical calculation provided.

More 312-50v12 FAQ →

Community Votes

D
100%

100% of anonymous learners picked answer D. Votes are pick records left by other test-takers — they are not the verified answer.

Discussion 4 contributions

Compiled from public community threads and reader submissions, lightly edited for clarity. Handles and vote tallies are shown as recorded, and comments reflect the views of individual contributors.

From public community threads 4

  1. insaniunt 👍 5 Answered D
    E = (4 2 z) u A. E = (4 2 600) 2 = 9600 B. E = (4 2 550) 2 = 8800 C. E = (4 2 500) 3 = 12000 D. E = (4 2 400) * 4 = 12800
  2. smoce 👍 5 Answered D
    E=(xyz)*u A. 9600 B. 8800 C. 12000 D. 12800
  3. [Removed] 👍 1
    Im a bit hesitant about the validity of this claim
  4. sosindi 👍 1 Answered D
    Answer is D

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