The flaw is caused due to the vulnerable method of handling the input data. In this method, the input data is validated by comparing the data type with expected values. However, in this case, the data type is not validated, so it can be any type of data.
An attacker can inject the malicious code into the application by sending any type of input data, for example, an image. When the application processes the image, it will try to validate the input data according to the data type received in the image. However, in this case, the data type is not validated, so it can be any type of data.
An attacker can send an image with a malicious code, so when the application processes that image, it will try to validate the input data according to the data type received in the image.
References:
The flaw is caused due to the vulnerable method of handling the input data. In this method, the input data is validated by comparing the data type with expected values. However, in this case, the data type is not validated, so it can be any type of data.
An attacker can inject the malicious code into the application by sending any type of input data, for example, an image. When the application processes the image, it will try to validate the input data according to the data type received in the image. However, in this case, the data type is not validated, so it can be any type of data.
An attacker can send an image with a malicious code, so when the application processes that image, it will try to validate the input data according to the data type received in the image.
Vulnerable Code: if ( input_data . type == 'image/jpeg' || input_data . type == 'image/png' )
{
}
else if ( input_data . type == 'text/plain' && input_data . size
How to Fix CVE-2022-42075?
The fix for this vulnerability is simple. In order to fix this vulnerability, the developer has to validate the data type before trying to process the input data.
When Is Your Site Vulnerable?
It is possible that your site is vulnerable if you have a cross site scripting (XSS) vulnerability. An XSS attack allows an attacker to send malicious code into a vulnerable website's server by exploiting one of these vulnerabilities. The malicious code can be any type of code - text, HTML, JavaScript, or executable code like .exe files.
Exploit Methods
The vulnerability can be exploited by sending a specially crafted input data to the application. This can be done through the use of an HTTP request because the vulnerable code is found in a form that is used for HTTP requests.
An attacker can inject malicious code into any part of the application and trigger the vulnerable functionality. For example, an attacker can send malicious code to trigger this vulnerability from the login page of the web application.
An attacker can inject malicious code into any part of the application and trigger the vulnerable functionality. For example, an attacker can send malicious code to trigger this vulnerability from a post feature on a blog site or a comment feature on a blog site or website.