T09 · Insecure Skill Coding Practices
Warning
- Location
- scripts/script.sh:6
- Finding
- Journal Data and Exports May Be Created with Overly Permissive File Permissions## Vulnerability Details **File Location**: `scripts/script.sh`, lines 6-7 **Vulnerability Type**: Insecure local storage permissions **Risk Level**: Medium ### Vulnerable Code ```bash DATA_DIR="${HOME}/.local/share/dailylog" mkdir -p "$DATA_DIR" ``` ### Technical Analysis The script creates a directory intended to contain personal plans, reflections, reminders, habit records, activity history, and exports. It does not establish a restrictive process umask or explicitly assign secure permissions to the directory and files. Consequently, permissions depend on the environment's existing umask. With a commonly used umask of `022`, the directory can be created with mode `0755`, while files created through shell redirection can receive mode `0644`. On a multi-user system, these permissions may allow other local users to list the directory and read journal or export files. The records are intentionally stored as plaintext, making filesystem access sufficient to disclose their complete contents. This issue does not independently grant remote access or elevated privileges; exploitation requires access through another local account or process that can traverse the user's home directory. ### Attack Path 1. The victim runs DailyLog in an environment with a permissive umask, such as `022`. 2. The script creates `~/.local/share/dailylog` without explicitly restricting its mode. 3. The victim records sensitive work plans, reminders, reflections, or other personal information. 4. Log and export files are created using the inherited umask and may be readable by other local users. 5. Another local account traverses the victim's accessible home path and reads the DailyLog files. ### Impact Assessment A successful attack can disclose all readable journal entries, reminders, work-related notes, habit records, activity history, and generated exports belonging to the affected user. The impact is limited to information available throug ...[truncated 161 chars]
- Remediation
- ## Remediation Suggestions - Set a restrictive umask before creating any storage or export files: ```bash umask 077 ``` - Create and enforce private directory permissions: ```bash install -d -m 0700 "$DATA_DIR" ``` - Apply mode `0600` to existing and newly generated logs and exports. - On startup, verify that the data directory is owned by the current user and is not a symbolic link. - Consider warning users that entries are stored as plaintext and offer encryption for particularly sensitive journal content.