Use after free in Chromoting in Google Chrome prior to 147.0.7727.138 allowed a remote attacker to execute arbitrary code via malicious network traffic. (Chromium security severity: High)
cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* - NOT VULNERABLE
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* - NOT VULNERABLE
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* - NOT VULNERABLE
Google Chrome < 147.0.7727.138
PoC / Exploit Code
⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
// Conceptual PoC for Use-After-Free in Chromoting
// This code demonstrates the logic of the vulnerability.
#include <iostream>
#include <cstring>
// Simulating a Chromoting Session Object
class ChromotingSession {
public:
virtual void handleTraffic(char* data) {
std::cout << "Handling traffic: " << data << std::endl;
}
virtual ~ChromotingSession() {}
};
// Global pointer representing the active session
ChromotingSession* active_session = nullptr;
void simulate_malicious_network_traffic() {
// Step 1: Initialization - Create the session object
active_session = new ChromotingSession();
// Step 2: Free the object (Simulating the 'Free' operation)
// In the vulnerable code, the object is freed but active_session is not set to NULL.
delete active_session;
// Step 3: Memory Manipulation (Heap Grooming)
// An attacker would spray the heap to control the memory at active_session.
// For this example, we assume the memory is corrupted or reused.
// Step 4: Use After Free (Simulating the 'Use' via malicious packet)
// The application attempts to use the freed pointer.
char* malicious_packet = "EXPLOIT_PAYLOAD";
if (active_session != nullptr) {
// This line triggers the vulnerability, potentially leading to RCE
active_session->handleTraffic(malicious_packet);
}
}
int main() {
simulate_malicious_network_traffic();
return 0;
}