xml/XMLHttpRequest.cpp in WebCore in WebKit before r38566 does not properly restrict access from web pages to the (1) Set-Cookie and (2) Set-Cookie2 HTTP response headers, which allows remote attackers to obtain sensitive information from cookies via XMLHttpRequest calls, related to the HTTPOnly protection mechanism.
https://exchange.xforce.ibmcloud.com/vulnerabilities/48575
https://bugs.webkit.org/show_bug.cgi?id=10957
http://www.securityfocus.com/bid/33804
http://trac.webkit.org/changeset/38566/trunk/WebCore/xml/XMLHttpRequest.cpp