Take the 2-minute tour ×
Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free, no registration required.

Lately, I have received errors while using wget against github on ubuntu 10.04.

ERROR: certificate common name `*.github.com' doesn't match requested host name `github.com'.
To connect to github.com insecurely, use `--no-check-certificate'.

Does anyone know why this error ocours and how to fix it (without --no-check-certificate).

share|improve this question

1 Answer 1

up vote 2 down vote accepted

Apparently, github.com is no longer using a wildcard certificate, and they use a certificate specifically for github.com. You need to obtain the new SSL certificate for github.com and put that in your system's certificate store, in /etc/ssl/certs.

You can get the new certificate using the command

openssl s_client -showcerts -connect github.com:443

In any case, the certificate is

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Once you put it in /etc/ssl/certs, wget will recognise it.

share|improve this answer
1  
Not sure I follow you. Would I also need to add a symbolic link to that certificate file? –  grm Jan 28 '11 at 12:39

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.