curl and libcurl 7.27.0 through 7.35.0, when running on Windows and using the SChannel/Winssl TLS backend, does not verify that the server hostname matches a domain name in the subject’s Common Name (CN) or subjectAltName field of the X.509 certificate when accessing a URL that uses a numerical IP address, which allows man-in-the-middle attackers to spoof servers via an arbitrary valid certificate.
curl.haxx.se/docs/adv_20140326D.html
seclists.org/oss-sec/2014/q1/585
seclists.org/oss-sec/2014/q1/586
secunia.com/advisories/57836
secunia.com/advisories/57966
secunia.com/advisories/57968
secunia.com/advisories/59458
www-947.ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-5095862
www.getchef.com/blog/2014/04/09/chef-server-11-0-12-release/
www.getchef.com/blog/2014/04/09/enterprise-chef-1-4-9-release/
www.getchef.com/blog/2014/04/09/enterprise-chef-11-1-3-release/
www.securityfocus.com/bid/66296