curl:(60) SSL证书问题:无法获得本地颁发者证书

root@sclrdev:/home/sclr/certs/FreshCerts# curl --ftp-ssl --verbose ftp://{abc}/ -u trup:trup --cacert /etc/ssl/certs/ca-certificates.crt
* About to connect() to {abc} port 21 (#0)
*   Trying {abc}...
* Connected to {abc} ({abc}) port 21 (#0)
< 220-Cerberus FTP Server - Home Edition
< 220-This is the UNLICENSED Home Edition and may be used for home, personal use only
< 220-Welcome to Cerberus FTP Server
< 220 Created by Cerberus, LLC
> AUTH SSL
< 234 Authentication method accepted
* successfully set certificate verify locations:
*   CAfile: /etc/ssl/certs/ca-certificates.crt
  CApath: /etc/ssl/certs
* SSLv3, TLS handshake, Client hello (1):
* SSLv3, TLS handshake, Server hello (2):
* SSLv3, TLS handshake, CERT (11):
* SSLv3, TLS alert, Server hello (2):
* SSL certificate problem: unable to get local issuer certificate
* Closing connection 0
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.

当前回答

这很可能是服务器上丢失的证书。

根- >中间- >服务器

服务器至少应该发送服务器和中间体。

使用openssl s_client -showcerts -starttls ftp -crlf -connect abc:21进行调试。

如果只返回一个证书(自签名或颁发)，那么您必须选择:

修复服务器信任该证书并将其添加到您的CA证书存储(不是最好的主意) 禁用信任，例如curl -k(非常糟糕的主意)

如果服务器返回多个，但不包括自签名(根)证书:

在此链的CA存储中安装CA(根)证书，例如谷歌颁发者。(只有当你信任该CA时) 服务器是否将CA作为链的一部分发送信任链中的证书禁用的信任

如果服务器返回一个根CA证书，那么它不在您的CA存储中，您的选项是:

添加(信任)它禁用的信任

我忽略了过期/撤销的证书，因为没有消息表明它。但是您可以使用openssl x509 -text检查certs

假设您正在连接到家庭版(https://www.cerberusftp.com/support/help/installing-a-certificate/) ftp服务器，我将说它是自签名的。

请发布更多细节，比如来自openssl的输出。

2016-11-27 01:24:45

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