Advisories for Gem/Oauth package

When an application uses OAuth::Consumer to request OAuth 1.0 request tokens or access tokens, the token request helper follows 300..399 redirects returned by the OAuth server. In affected versions, OAuth::Consumer#token_request parses the raw Location header, follows the redirect recursively, and can mutate the consumer's configured site when the redirect points to a different host with the same path. The result is a cross-origin signed-request disclosure primitive: if an OAuth server …

lib/oauth/consumer.rb in the oauth-ruby gem for Ruby does not verify server X.509 certificates if a certificate bundle cannot be found, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information.