I am running Windows Vista and am attempting to connect via https to upload a file in a multi part form but I am having some trouble with the local issuer certificate. I am just trying to figure out why this isnt working now, and go back to my cURL code later after this is worked out. Im running the command:
openssl s_client -connect connect_to_site.com:443
It gives me an digital certificate from VeriSign, Inc., but also shoots out an error:
Verify return code: 20 (unable to get local issuer certificate)
What is the local issuer certificate? Is that a certificate from my own computer? Is there a way around this? I have tried using -CAfile mozilla.pem file but still gives me same error.
I had the same problem and solved it by passing path to a directory where CA keys are stored. On Ubuntu it was:
openssl s_client -CApath /etc/ssl/certs/ -connect address.com:443
Solution:
You must explicitly add the parameter -CAfile your-ca-file.pem.
Note: I tried also param -CApath mentioned in another answers, but is does not works for me.
Explanation:
Error unable to get local issuer certificate means, that the openssl does not know your root CA cert.
Note: If you have web server with more domains, do not forget to add also -servername your.domain.net parameter. This parameter will "Set TLS extension servername in ClientHello". Without this parameter, the response will always contain the default SSL cert (not certificate, that match to your domain).
This error also happens if you're using a self-signed certificate with a keyUsage missing the value keyCertSign.
Is your server configured for client authentication? If so you need to pass the client certificate while connecting with the server.
I had the same problem on OSX OpenSSL 1.0.1i from Macports, and also had to specify CApath as a workaround (and as mentioned in the Ubuntu bug report, even an invalid CApath will make openssl look in the default directory).
Interestingly, connecting to the same server using PHP's openssl functions (as used in PHPMailer 5) worked fine.
put your CA & root certificate in /usr/share/ca-certificate or /usr/local/share/ca-certificate.
Then
dpkg-reconfigure ca-certificates
or even reinstall ca-certificate package with apt-get.
After doing this your certificate is collected into system's DB:
/etc/ssl/certs/ca-certificates.crt
Then everything should be fine.
With client authentication:
openssl s_client -cert ./client-cert.pem -key ./client-key.key -CApath /etc/ssl/certs/ -connect foo.example.com:443
Create the certificate chain file with the intermediate and root ca.
cat intermediate/certs/intermediate.cert.pem certs/ca.cert.pem > intermediate/certs/ca-chain.cert.pem
chmod 444 intermediate/certs/ca-chain.cert.pem
Then verfify
openssl verify -CAfile intermediate/certs/ca-chain.cert.pem \
intermediate/certs/www.example.com.cert.pem
www.example.com.cert.pem: OK
Deploy the certific
I faced the same issue,
It got fixed after keeping issuer subject value in the certificate as it is as subject of issuer certificate.
so please check "issuer subject value in the certificate(cert.pem) == subject of issuer (CA.pem)"
openssl verify -CAfile CA.pem cert.pem
cert.pem: OK
I got this problem when my NGINX server did not have a complete certificate chain in the certificate file it was configured with.
My solution was to find a similar server and extract the certificates from that server with something like:
openssl s_client -showcerts -CAfile my_local_issuer_CA.cer -connect my.example.com:443 > output.txt
Then I added the ASCII armoured certificates from that 'output.txt' file (except the machine-certificate) to a copy of my machines certificate-file and pointed NGINX at that copied file instead and the error went away.
this error messages means that
CABundle is not given by (-CAfile ...)
OR
the CABundle file is not closed by a self-signed root certificate.
Don't worry. The connection to server will work even
you get theis message from openssl s_client ...
(assumed you dont take other mistake too)
I would update #user1462586 answer by doing the following:
I think it is more suitable to use update-ca-certificates command, included in the ca-certificates package than dpkg-reconfigure.
So basically, I would change its useful answer to this:
Retrieve the certificate (from this stackoverflow answer and write it in the right directory:
# let's say we call it my-own-cert.crt
openssl s_client -CApath /etc/ssl/certs/ -connect <hostname.domain.tld>:<port> 2>/dev/null </dev/null | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' > /usr/share/ca-certificates/my-own-cert.crt
Repeat the operation if you need other certificates.
For example, if you need CA certs for ldaps/starttls with Active Directory, see here for how to process this + use openssl to convert it in pem/crt:
openssl x509 -inform der -in LdapSecure.cer -out my-own-ca.pem
#and copy it in the right directory...
cp my-own-ca.pem /usr/share/ca-certificates/my-own-ca.crt
Add this certificates to the /etc/ca-certificates.conf configuration file:
echo "my-own-cert.crt" >> /etc/ca-certificates.conf
echo "my-own-ca.crt" >> /etc/ca-certificates.conf
Update /etc/ssl/certs directory:
update-ca-certificate
Enjoy
Note that if you use private domain name machines, instead of legitimate public domain names, you may need to edit your /etc/hosts file to be able to have the corresponding FQDN.
This is due to SNI Certificate binding issue on the Vserver or server itself
I have an application running on Centos7 that needs to connect to a remote host over HTTPS. However, it is unable to verify the certificate and fails. Also, if I try to download a file from the server using wget, I get the below error:
[root#foo:~]# wget https://10.65.127.9/index.html
--2017-05-22 09:03:01-- https://10.65.127.9/index.html
Connecting to 10.65.127.9:443... connected.
ERROR: cannot verify 10.65.127.9's certificate, issued by ‘/CN=us6877vnxe7827’:
Unable to locally verify the issuer's authority.
To connect to 10.65.127.9 insecurely, use `--no-check-certificate'.
So I get the certificate from the host:
openssl s_client -connect 10.65.127.9:443 <<<'' | openssl x509 -out /etc/pki/ca-trust/source/anchors/mycert.pem
And execute the following to process it:
update-ca-trust extract
This however results in the same issue.. If I run:
openssl s_client -connect 10.65.127.9:443 -showcerts -debug
I do get some errors and various messages:
depth=0 CN = us6877vnxe7827
verify error:num=20:unable to get local issuer certificate
verify return:1
depth=0 CN = us6877vnxe7827
verify error:num=21:unable to verify the first certificate
verify return:1
---
Certificate chain
0 s:/CN=us6877vnxe7827
i:/CN=us6877vnxe7827
Server certificate
subject=/CN=us6877vnxe7827
issuer=/CN=us6877vnxe7827
---
No client certificate CA names sent
---
Verify return code: 21 (unable to verify the first certificate)
Any ideas what I may be missing? If any further info helps, please let me know.
For wget you need to provide the certificate authority (CA) certificate(s) that signed the https server certificate. If you have those CA certificates - add them under --ca-certificate=file or --ca-directory=directory options
If you don't have them and you want to skip https server certificate verification (unsecure and can be dangerous) then use --no-check-certificate option.
I had the same problem with Jenkins trying to connect to our GitLab server.
The server does have a valid official certificate in our case, but Java didn't except it.
You are right about downloading the certificate.
However, the application you are mentioning is probably running inside a Java Virtual Machine (as a lot of applications are).
So from the point that you downloaded the certificate to a PEM file, you may have to add it to the VM's trusted certificates instead.
This article describes how to do that. Hope it helps.
I'am trying to confirm, that our server will be ready for the SSL Certificate Change.
According to Microsite migration on www.sandbox.paypal.com is complete.
Running:
openssl s_client -CApath /etc/ssl/certs/ -connect www.sandbox.paypal.com:443
returned 0 (ok)
Does this test definitively confirm that our server is ready?
The openssl connection return code(0) will be affirmative for this cert check, but there’s a slightly change you may want to make for the call.
Run with the following line and try the conn one more time, (I’ve added the –showcerts parameter so that the cert chain will be printed out and you may easily identify Verisign G5 root cert in there)
openssl s_client -connect api-3t.sandbox.paypal.com:443 -showcerts -CApath /etc/ssl/certs/
When I run the following command:
# curl https://undisclosedwebsite.nl
I get the following error:
curl: (60) SSL certificate problem: unable to get local issuer certificate
More details here: http://curl.haxx.se/docs/sslcerts.html
curl performs SSL certificate verification by default, using a "bundle"
of Certificate Authority (CA) public keys (CA certs). If the default
bundle file isn't adequate, you can specify an alternate file
using the --cacert option.
If this HTTPS server uses a certificate signed by a CA represented in
the bundle, the certificate verification probably failed due to a
problem with the certificate (it might be expired, or the name might
not match the domain name in the URL).
If you'd like to turn off curl's verification of the certificate, use
the -k (or --insecure) option.
After some debugging with openssl s_client -connect https://undisclosedwebsite.nl I discovered that the following command with cURL does work:
curl https://undisclosedwebsite.nl --cacert /etc/ssl/certs/ca-certificates.crt
Isn't cURL supposed to use this file?
I can not verify the certificate by openssl
openssl verify cert.pem
Gets something like this:
cert.pem: / C = PL / O = DATA
error 20 at 0 depth lookup: unable to get local issuer certificate
The same cert from the machine on Centos - verified correctly.
Debian: squeeze / sid
Is it a problem with the CA ROOT? Update openssl help?
Unlike browsers, which trust nearly everything from anybody, OpenSSL trusts nothing by default.
Its up to you to determine what should be trusted. You will have to specify something when using OpenSSL. It may be a cert or list of certs to trust.
The directory /etc/ssl/certs contains many certs. Using such directory should allow to verify almost anything:
openssl verify -CApath /etc/ssl/certs cert.pem
It is recommended that you reduce the number of trusted certs to one, two or the minimum possible.
You need to specify the CA cert in order to verify the issued cert since it's obviously not included in the pem (though this would be possible):
openssl verify -CAfile your_ca_cert_file cert.pem
If you do not get the error on centOS then there's the CA cert around and openssl can use it to successfully verify cert.pem
You need to make your CA trusted on the server. For example, if your cert is from goadday, run the following commands.
cd /tmp
sudo wget -O gd_intermediate.crt https://certs.godaddy.com/repository/gd_intermediate.crt
sudo cp /tmp/gd_intermediate.crt /usr/local/share/ca-certificates/gd_intermediate.crt
sudo update-ca-certificates
After running these commands, your certificate should be verified.
openssl verify cert.pem