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35 lines
1.7 KiB
Plaintext
35 lines
1.7 KiB
Plaintext
Upgrading to curl/libcurl 7.10 from any previous version
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========================================================
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libcurl 7.10 performs peer SSL certificate verification by default. This is
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done by installing a default CA cert bundle on 'make install' (or similar),
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that CA bundle package is used by default on operations against SSL servers.
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Alas, if you communicate with HTTPS servers using certifcates that are signed
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by CAs present in the bundle, you will not notice any changed behavior and you
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will seeminglessly get a higher security level on your SSL connections since
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can be sure that the remote server really is the one it claims to be.
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If the remote server uses a self-signed certificate, or if you don't install
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curl's CA cert bundle or if it uses a certificate signed by a CA that isn't
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included in the bundle, then you need to do one of the following:
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1. Tell libcurl to *not* verify the peer. With libcurl you disable with with
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curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, FALSE);
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With the curl command tool, you disable this with -k/--insecure.
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2. Get a CA certificate that can verify the remote server and use the proper
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option to point out this CA cert for verification when connecting. For
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libcurl hackers: curl_easy_setopt(curl, CURLOPT_CAPATH, capath);
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With the curl command tool: --cacert [file]
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This upgrade procedure has been deemed The Right Thing even though it adds
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this extra trouble for some users, since it adds security to a majority of the
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SSL connections that previously weren't really secure.
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It turned out many people were using previous versions of curl/libcurl without
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realizing the need for the CA cert options to get truly secure SSL
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connections.
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