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GHSA-c69x-5xmw-v44x
No affected components available
Summary
Here it is observed that the CasaOS doesn't defend against password brute force attacks, which leads to having full access to the server.
Details
The web application lacks control over the login attempts i.e. why attacker can use a password brute force attack to find and get full access over the.
PoC
- Capture login request in proxy tool like Burp Suite and select password field.
- Here I have started attack with total number of 271 password tries where the last one is the correct password and as we can see in the following image we get a 400 Bad Request status code with the message "Invalid Password" and response length 769 on 1st request which was sent at Tue, 16 Jan 2024 18:31:32 GMT
Note: We have tested this vulnerability with more than 3400 tries. We have used 271 request counts just for demo purposes.
- Here the attack is completed and we can see in the following image we get 200 OK status code with the message "Ok" and response length 1509 on 271st request which was sent at Tue, 16 Jan 2024 18:32:01 GMT.
This means attacker can try 271 requests in 56 seconds.
Impact
This vulnerability allows attackers to get super user-level access over the server.
Mitigation
It is recommended to implement a proper rate-limiting mechanism on the server side where the configuration might be like: If a specific IP address fails to login more than 5 times concurrently then that IP address must be blocked for at least 30 seconds. This will reduce the possibility of password brute-forcing attacks.
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a low impact on the confidentiality of the information. There is a low impact on the integrity of the data. There is a low impact on the availability of the system.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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