CVE-2013-6422

The GnuTLS backend in libcurl 7.21.4 through 7.33.0, when disabling digital signature verification (CURLOPT_SSL_VERIFYPEER), also disables the CURLOPT_SSL_VERIFYHOST check for CN or SAN host name fields, which makes it easier for remote attackers to spoof servers and conduct man-in-the-middle (MITM) attacks.

Date published : 2013-12-23

http://curl.haxx.se/docs/adv_20131217.html

http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html