The docert function in ssl-cert.eclass, when used by src_compile or src_install on Gentoo Linux, stores the SSL key in a binpkg, which allows local users to extract the key from the binpkg, and causes multiple systems that use this binpkg to have the same SSL key and certificate.
https://exchange.xforce.ibmcloud.com/vulnerabilities/41336
https://bugs.gentoo.org/show_bug.cgi?id=174759
http://www.securityfocus.com/bid/28350
http://security.gentoo.org/glsa/glsa-200803-30.xml