multiple_choice medium Apply enum-misconfig 2 points

Question 13. CSCD240-E1-C

Find every regular file under /var that is world-writable?

Work the drill

Answer on paper or in a terminal before revealing the ideal answer.

Ideal answer

B: find /var -type f -perm -0002

Misconception bank

Each row below is a plausible wrong answer, the thinking that produces it, and the remedy that corrects the misconception. These are the foundation of the multiple-choice framing and the targeted feedback a student receives after answering.

A: find /var -perm 777

Misconception. -perm 777 requires exact mode; misses files with additional bits.

Remedy. -perm -NNNN = at least these bits.

C: find /var -perm +w

Misconception. +w is not valid find syntax.

Remedy. Use -0002 for world-write at least.

D: ls -l /var | grep w

Misconception. grep w matches any w, including owner/group write.

Remedy. Use find -perm for precise matching.

Authority mappings

Hover any chip for the mapping justification; click to open the authority record.

DCWF roles: CE-121 Exploitation Analyst

DCWF tasks: T0250

KU outcomes: CO-M10-O1

Course-artifact links

Lectures

CSCD240-S26-L08. Pipes, filters, grep, sort, uniq, wc, tar