T09 · Insecure Skill Coding Practices
Note
- Location
- scripts/status_report.sh:10
- Finding
- Unbounded Status File Growth and Duplicate Writer Risk## Vulnerability Details **File Location**: `scripts/status_report.sh`, lines 10-15 **Vulnerability Type**: Unbounded resource consumption **Risk Level**: Low ```bash while true; do ts=$(date '+%Y-%m-%d %H:%M:%S') echo "[$ts] $AGENT_NAME : sedang idle" >> "$TO_LEADER" sleep 30 # kirim status tiap 30 detik (ubah bila perlu) done ``` ### Technical Analysis The script enters an unconditional infinite loop and appends a new record to `to_leader.txt` every 30 seconds. It does not impose a file-size limit, rotate or delete old records, limit its execution duration, or use a singleton lock to prevent concurrent instances. A single process therefore causes indefinite file growth. If the script is launched repeatedly, every active instance writes to the same file, accelerating storage consumption and producing duplicate status records. Exploitation requires the ability to execute or repeatedly invoke the script; the code does not independently provide unauthorized code execution. ### Attack Path 1. An operator, automation component, or user starts `scripts/status_report.sh`. 2. The script appends a status record to `$HOME/.openclaw/workspace/skills/meeting-room/to_leader.txt` every 30 seconds without a termination or retention condition. 3. The script may be started additional times because no process lock or duplicate-instance detection is present. 4. One or more instances continuously enlarge the destination file. 5. Over a sufficiently long period, the file consumes increasing storage and may exhaust the filesystem quota or available disk capacity. ### Impact Assessment No additional privileges, unauthorized system access, or remote execution capability can be obtained through this issue alone. The impact is limited to availability and integrity within the permissions of the account running the script. Potential consequences include excessive disk usage, duplicate or misleading status records, failure of other ...[truncated 99 chars]
- Remediation
- ## Remediation Suggestions Replace the permanent loop with a scheduler that invokes a single bounded status update when required. If a long-running process is necessary: - Add a singleton lock, such as `flock`, to prevent concurrent instances. - Implement graceful termination with signal handlers. - Enforce a maximum destination-file size. - Configure log rotation and a retention limit. - Rate-limit writes and make the interval configurable with a safe minimum. - Monitor write failures and available storage. - Ensure the destination directory and file have restrictive ownership and permissions. A bounded scheduler-based design is preferable because each invocation performs one append and exits, leaving lifecycle and concurrency control to the scheduler.