4.3
CVSSv2

CVE-2015-4020

Published: 25/08/2015 Updated: 09/12/2017
CVSS v2 Base Score: 4.3 | Impact Score: 2.9 | Exploitability Score: 8.6
VMScore: 383
Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N

Vulnerability Summary

RubyGems 2.0.x prior to 2.0.17, 2.2.x prior to 2.2.5, and 2.4.x prior to 2.4.8 does not validate the hostname when fetching gems or making API requests, which allows remote malicious users 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.

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oracle solaris 11.3

rubygems rubygems 2.0.0

rubygems rubygems 2.0.15

rubygems rubygems 2.0.16

rubygems rubygems 2.0.9

rubygems rubygems 2.2.0

rubygems rubygems 2.4.2

rubygems rubygems 2.4.3

rubygems rubygems 2.0.1

rubygems rubygems 2.0.10

rubygems rubygems 2.0.2

rubygems rubygems 2.0.3

rubygems rubygems 2.2.1

rubygems rubygems 2.2.2

rubygems rubygems 2.4.4

rubygems rubygems 2.4.5

rubygems rubygems 2.0.11

rubygems rubygems 2.0.12

rubygems rubygems 2.0.4

rubygems rubygems 2.0.5

rubygems rubygems 2.2.3

rubygems rubygems 2.2.4

rubygems rubygems 2.4.6

rubygems rubygems 2.4.7

rubygems rubygems 2.0.13

rubygems rubygems 2.0.14

rubygems rubygems 2.0.6

rubygems rubygems 2.0.7

rubygems rubygems 2.0.8

rubygems rubygems 2.4.0

rubygems rubygems 2.4.1

Vendor Advisories

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, specificly 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 (CV ...
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, specificly 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 (CV ...
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, specificly 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 (CV ...