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CVE-2015-4020

Publication date 25 August 2015

Last updated 24 July 2024

Ubuntu priority

Low

Why this priority?

RubyGems 2.0.x before 2.0.17, 2.2.x before 2.2.5, and 2.4.x before 2.4.8 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 with a domain that is suffixed with the original domain name, aka a "DNS hijack attack." NOTE: this vulnerability exists because to an incomplete fix for CVE-2015-3900.

Read the notes from the security team

Status

Package Ubuntu Release Status
jruby 15.04 vivid
Not affected
14.10 utopic
Not affected
14.04 LTS trusty
Not affected
12.04 LTS precise
Not affected
libgems-ruby 15.04 vivid Not in release
14.10 utopic Not in release
14.04 LTS trusty Not in release
12.04 LTS precise Not in release
ruby1.8 15.04 vivid Not in release
14.10 utopic Not in release
14.04 LTS trusty Not in release
12.04 LTS precise
Not affected
ruby1.9.1 15.04 vivid
Not affected
14.10 utopic
Not affected
14.04 LTS trusty Not in release
12.04 LTS precise
Not affected
ruby2.1 15.04 vivid
Not affected
14.10 utopic
Not affected
14.04 LTS trusty Not in release
12.04 LTS precise Not in release
ruby2.2 15.04 vivid Not in release
14.10 utopic Not in release
14.04 LTS trusty Not in release
12.04 LTS precise Not in release
rubygems 15.04 vivid Not in release
14.10 utopic Not in release
14.04 LTS trusty Not in release
12.04 LTS precise
Not affected

Notes

tyhicks

rubygems is for users of ruby1.8. ruby1.9.1 and jruby ship an embedded rubygems.