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CVE-2015-3900

Status Candidate

Overview

RubyGems 2.0.x before 2.0.16, 2.2.x before 2.2.4, and 2.4.x before 2.4.7 does not validate the hostname when fetching gems or making API requests, which allows remote attackers to redirect requests to arbitrary domains via a crafted DNS SRV record, aka a "DNS hijack attack."

Related Files

Red Hat Security Advisory 2015-1657-01
Posted Aug 24, 2015
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2015-1657-01 - Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management tasks. A flaw was found in a way rubygems verified the API endpoint hostname retrieved through a DNS SRV record. A man-in-the-middle attacker could use this flaw to force a client to download content from an untrusted domain. All rh-ruby22-ruby users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. All running instances of Ruby need to be restarted for this update to take effect.

tags | advisory, ruby
systems | linux, redhat
advisories | CVE-2015-3900
SHA-256 | a83a76331113d2b393468cdeb02666b0ee5a4d97f354b9b3f8e95a81b41f2fc7
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