CVE-2014-2522

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.

• CWE-20

• http://curl.haxx.se/docs/adv_20140326D.htmlPatch, Vendor Advisory
• http://seclists.org/oss-sec/2014/q1/585
• http://seclists.org/oss-sec/2014/q1/586
• http://secunia.com/advisories/57836Vendor Advisory
• http://secunia.com/advisories/57966Vendor Advisory
• http://secunia.com/advisories/57968Vendor Advisory
• http://secunia.com/advisories/59458
• http://www-947.ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-5095862
• http://www.getchef.com/blog/2014/04/09/chef-server-11-0-12-release/
• http://www.getchef.com/blog/2014/04/09/enterprise-chef-1-4-9-release/
• http://www.getchef.com/blog/2014/04/09/enterprise-chef-11-1-3-release/
• http://www.securityfocus.com/bid/66296
• http://curl.haxx.se/docs/adv_20140326D.htmlPatch, Vendor Advisory
• http://seclists.org/oss-sec/2014/q1/585
• http://seclists.org/oss-sec/2014/q1/586
• http://secunia.com/advisories/57836Vendor Advisory
• http://secunia.com/advisories/57966Vendor Advisory
• http://secunia.com/advisories/57968Vendor Advisory
• http://secunia.com/advisories/59458
• http://www-947.ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-5095862
• http://www.getchef.com/blog/2014/04/09/chef-server-11-0-12-release/
• http://www.getchef.com/blog/2014/04/09/enterprise-chef-1-4-9-release/
• http://www.getchef.com/blog/2014/04/09/enterprise-chef-11-1-3-release/
• http://www.securityfocus.com/bid/66296

Published

Apr 18, 2014

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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