FreeBSD : rubygems -- request hijacking vulnerability (a0089e18-fc9e-11e4-bc58-001e67150279)
Medium Nessus Plugin ID 83513
SynopsisThe remote FreeBSD host is missing one or more security-related updates.
DescriptionJonathan Claudius reports :
RubyGems provides the ability of a domain to direct clients to a separate host that is used to fetch gems and make API calls against.
This mechanism is implemented via DNS, specifically a SRV record
_rubygems._tcp under the original requested domain.
RubyGems did not validate the hostname returned in the SRV record before sending requests to it. This left clients open to a DNS hijack attack, whereby an attacker could return a SRV of their choosing and get the client to use it.
SolutionUpdate the affected packages.