[Secure-testing-team] Bug#790119: ruby2.1: CVE-2015-3900: DNS hijacking vulnerability in api_endpoint()

[Salvatore Bonaccorso]

Source: ruby2.1
Version: 2.1.5-1
Severity: important
Tags: security upstream patch fixed-upstream

the following vulnerability was published for ruby2.1.

CVE-2015-3900[0]:
| 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
| request, which allows remote attackers to redirect requests to
| arbitrary domains via a crafted DNS SRV record, aka a "DNS hijack
| attack."

If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2015-3900
[1] http://blog.rubygems.org/2015/05/14/CVE-2015-3900.html

Regards,
Salvatore