F2 is the product two times one | Rapid course Authorized offensive security and red team

Lesson map

Lesson 14. Map, example, EX060.

flowchart TD
  L["likelihood 2"] --> P["product 2"]
  I["impact 1"] --> P
  P --> B["low"]
  B --> R["last line"]

The banner title does not store a score. The last two numbers do.

Logical drawing

F2
  likelihood 2
  impact 1
  product 2
  band low
  printed last

Learning outcomes

After this chapter, you should be able to:

Multiply F2's two ratings.
Say why that product is low.
Refuse a reading that treats the banner words as the score.

14.1 Index 2 is 2. Index 3 is 1. The product is the whole score.

F2's tuple is ("F2", "Old web server banner shows version", 2, 1). Likelihood 2 times impact 1 is 2. Two fails both >= 6 and >= 4, so the word is low. The key (-2, "F2") is the greatest of the four first-components once the minus is applied, meaning it sorts last. The title is evidence language for the page. It is not an integer, and the lambda does not parse it.

A version banner can still matter to an owner. This script does not measure that. It multiplies the two ratings Maya stored. Changing the title without changing 2, 1 would leave the line's score and band alone.

Lesson table; scroll horizontally to read all columns →

Field	F2's value	Used in the product?
Id	F2	Only as the tie key
Title	Old web server banner shows version	No
Likelihood	2	Yes
Impact	1	Yes

14.2 Worked example

Lesson table; scroll horizontally to read all columns →

Offered claim	Arithmetic	Decision
"Score 2, band low, last line."	`2 * 1`, then the thresholds, then the key	Keep
"The word banner lowers the score by itself."	The integers are the product	Refuse
"F2 is medium because 2 is a small high."	2 fails `>= 4`	Refuse

Synthetic case. F2 is one tuple. Its harm is not re-scored in the script.

Errors and limits

Do not edit F2's title and expect the product to move.

Apply

EX060 — Product two. How does F2 arrive at score 2 and the word low?
Show marking criteria
Rubric: 3 = likelihood 2 times impact 1 is 2; 2 fails both thresholds, so the word is low; the title is not the arithmetic;; 2 = the product is 2 and the band is low;; 1 = one number;; 0 = none.