T09 · Insecure Skill Coding Practices
Warning
- Location
scripts/script.sh:4- Finding
Planner Data Is Created Without Restrictive Filesystem Permissions
- Content
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/dev/null || echo " No entries yet. Use: dayplanner add " else local input="$*" local ts=$(date '+%Y-%m-%d %H:%M') echo "$ts|$input" >> "$DATA_DIR/add.log" local total=$(wc -l < "$DATA_DIR/add.log") ``` Equivalent append operations are used for the other planner log files and for `history.log`. ### Technical Analysis The script does not set a restrictive `umask` and does not explicitly assign secure permissions to the data directory or log files. Their effective permissions therefore depend entirely on the invoking process's environment. With a common `022` umask, the directory may be created with mode `0755`, while newly created log and export files may receive mode `0644`. On a multi-user system, this can allow other local accounts to traverse the planner directory and read task descriptions, plans, reminders, meeting details, reviews, and other potentially sensitive information. The script also does not inspect or repair an existing data directory with overly permissive permissions. ### Attack Path 1. A user runs Dayplanner in an environment with a permissive umask, such as `022`. 2. The script creates `~/.local/share/dayplanner` and its log files without explicit restrictive modes. 3. The user records sensitive planner content. 4. Another local account enumerates the user's home directory and accesses the world-readable or group-readable planner files. 5. The local attacker obtains personal sched ...[truncated 756 chars]- Remediation
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