nodejs - error self signed certificate in certificate chain

user_7832301 0
Viewed 240894

I am facing a problem with client side https requests.

A snippet can look like this:

var fs = require('fs');
var https = require('https');

var options = {
    hostname: 'someHostName.com',
    port: 443,
    path: '/path',
    method: 'GET',
    key: fs.readFileSync('key.key'),
    cert: fs.readFileSync('certificate.crt')
}

var requestGet = https.request(options, function(res){
    console.log('resObj', res);
}

What I get is Error: self signed certificate in certificate chain.

When I use Postman I can import the client certificate and key and use it without any problem. Is there any solution available?? I would also like to be given some lights on how postman handles the certificates and works.

node.js https ssl authentication javascript
10 Answers

You can fix this issue using NODE_TLS_REJECT_UNAUTHORIZED=0 in the terminal or inserting the following line within the JS file.

process.env['NODE_TLS_REJECT_UNAUTHORIZED'] = 0;

Beware that this a hack and it should not be used in production.

If you are using windows then run the following command in the command prompt:

set NODE_TLS_REJECT_UNAUTHORIZED=0

After that, npm install <my-package> will work.

user_111584470

for Nodemailer:

adding

tls: {
  rejectUnauthorized: false
}

solved my problem.

Overall code looks liek this:

nodemailer.createTransport({
    host: process.env.MAIL_SERVER,
    secure: false,
    port: 587,
    auth: {
      user: process.env.MAIL_USERNAME,
      pass: process.env.MAIL_PASSWORD
    },
    tls: {
      rejectUnauthorized: false
    }
  }
user_64457320

you just add at the start of your code this line:

process.env.NODE_TLS_REJECT_UNAUTHORIZED='0'

And everything solved, but in any case it is not recommendable, I am investigating the solution of https://letsencrypt.org/

user_98648140

Turning off verification is quite a dangerous thing to do. Much better to verify the certificate.

You can pull the Certificate Authority certificate into the request with the ca key of the options object, like this:

let opts = {
    method: 'GET',
    hostname: "localhost",
    port: listener.address().port,
    path: '/',
    ca: await fs.promises.readFile("cacert.pem")
  };

https.request(opts, (response) => { }).end();

I put a whole demo together of this so you can see how to construct SSL tests.

It's here.

user_1301250

The node application needs to have the CA certificate added to the existing CA (Mozilla) certificates.

We start node using a service, and add the environment variable, NODE_EXTRA_CA_CERTS

[Service]
Restart=always
User=<...>
Group=<...>
Environment=PATH=/usr/bin:/usr/local/bin
Environment=NODE_ENV=production
Environment=NODE_EXTRA_CA_CERTS=/<...>/.ssl/extra_certs.pem
WorkingDirectory=/<...>

ExecStart=/usr/bin/node -r dotenv/config /<.....>/server.js dotenv_config_path=/<....>/.env

This way we can use the same application to call services using popular CAs or our own self signed certs, and we don't have to turn off SSL checking.

In linux there is an easy way to get the certificate, use this post: Use self signed certificate with cURL?

You create your certificate using:

$ echo quit | openssl s_client -showcerts -servername server -connect server:443 > cacert.pem

then copy that .pem file as the extra_cert.pem. You can only have one pem file, but you can append multiple pem files into one file.

I hope this helps someone, it took me a while to find the different parts to make this work.

user_40451260

Do:

Better use this if running a node script for standalone purpose,

process.env['NODE_TLS_REJECT_UNAUTHORIZED'] = 0;

Don't:

instead of changing all default request process.

npm config set strict-ssl=false

i.e., don't alter your node config, else it will apply to all your requests, by making it default config. So just use it where necessary.

user_118873480

For what it's worth, after spending a day and a half trying to track this one down it turned out the error was caused by a setting on my company's firewall that IT had to disable. Nothing anywhere on the internet did anything to fix this.

user_61148910

process.env['NODE_TLS_REJECT_UNAUTHORIZED'] = 0; Even though its not worked ...

Not Able to Install Cypress:

S C:\Cypress> export NODE_TLS_REJECT_UNAUTHORIZED='0' node app.js export : The term 'export' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included,
verify that the path is correct and try again. At line:1 char:1

  • export NODE_TLS_REJECT_UNAUTHORIZED='0' node app.js
  •   + CategoryInfo          : ObjectNotFound: (export:String) [], CommandNotFoundException   
  + FullyQualifiedErrorId : CommandNotFoundException
user_191743560
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