The Moped::BSON::ObjecId.legal? method in mongodb/bson-ruby before 3.0.4 as used in rubygem-moped allows remote attackers to cause a denial of service (worker resource consumption) via a crafted string. NOTE: This issue is due to an incomplete fix to CVE-2015-4410.
https://www.securityfocus.com/bid/75045
https://security-tracker.debian.org/tracker/CVE-2015-4411
https://seclists.org/oss-sec/2015/q2/653
https://github.com/mongodb/bson-ruby/commit/976da329ff03ecdfca3030eb6efe3c85e6db9999
https://bugzilla.redhat.com/show_bug.cgi?id=1229706
http://www.securityfocus.com/bid/75045
http://www.openwall.com/lists/oss-security/2015/06/06/3
http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161987.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161964.html