Web assembly directive is blocked in our server content security policy. Thus we are not able to use the package

[mohamedabady]

The Issue

after updating our server with the new code using the package, we got the above error in the console. After some small search, i understood that using webassembly might have some security concerns :

there are some security issues associated with using WebAssembly (Wasm). Here are some key concerns:

Code Injection and Exploits: Since WebAssembly allows running low-level binary code in the browser, there is a potential risk for code injection and exploitation if the Wasm module is compromised. Malicious actors could potentially exploit vulnerabilities in the WebAssembly code to perform unauthorized actions.

Memory Safety: While WebAssembly is designed to be memory-safe, bugs in the implementation of WebAssembly engines can lead to memory corruption vulnerabilities. These can be exploited to execute arbitrary code or bypass security restrictions.

Sandboxing Issues: WebAssembly runs in a sandboxed environment, which helps isolate it from the rest of the system. However, if there are flaws in the sandbox implementation, it could allow malicious code to escape the sandbox and interact with the host system or other parts of the browser.

Side-Channel Attacks: WebAssembly can potentially be used to perform side-channel attacks, such as timing attacks, to leak sensitive information. These attacks exploit the way Wasm code executes to infer data from secure contexts.

Third-Party Libraries: Many WebAssembly modules rely on third-party libraries. If these libraries contain vulnerabilities, they can be inherited by the WebAssembly module. Ensuring the security of all dependencies is crucial.

Denial of Service (DoS) Attacks: Malicious WebAssembly code can be used to perform DoS attacks by consuming excessive computational resources, causing the browser or the system to become unresponsive.

Compatibility with Existing Security Policies: WebAssembly might not be fully compatible with existing Content Security Policies (CSP) and other web security mechanisms. This can lead to potential gaps in security coverage.

the question now:

how can we mitigate these risks and use the package normally ?

[brookjordan]

If we could access a way to use the setZXingModuleOverrides function then we could override the route to the wasm file to be a local one.

Any thoughts on surfacing this?

[code-flow]

Same here! I would really appreciate the opportunity to access the setZXingModuleOverrides property!

[yudielcurbelo]

In version 2.0.7 you can import setZXingModuleOverrides.
I have not try it but you should be able to do something like.

import wasmFile from '{file location}';

import { setZXingModuleOverrides } from '@yudiel/react-qr-scanner';

setZXingModuleOverrides({
  locateFile: (path, prefix) => {
    if (path.endsWith(".wasm")) {
      return wasmFile;
    }
    return prefix + path;
  },
});

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.