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CVE-2017-17790

Published: 20 December 2017

The lazy_initialize function in lib/resolv.rb in Ruby through 2.4.3 uses Kernel#open, which might allow Command Injection attacks, as demonstrated by a Resolv::Hosts::new argument beginning with a '|' character, a different vulnerability than CVE-2017-17405. NOTE: situations with untrusted input may be highly unlikely.

Priority

Medium

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
ruby2.5
Launchpad, Ubuntu, Debian
artful Does not exist

bionic
Released (2.5.1-1)
trusty Does not exist

upstream Needs triage

xenial Does not exist

zesty Does not exist

ruby1.9.1
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

trusty
Released (1.9.3.484-2ubuntu1.7)
upstream Needs triage

xenial Does not exist

zesty Does not exist

ruby2.3
Launchpad, Ubuntu, Debian
artful
Released (2.3.3-1ubuntu1.2)
bionic Does not exist

trusty Does not exist

upstream Needs triage

xenial
Released (2.3.1-2~16.04.5)
zesty Ignored
(end of life)

Severity score breakdown

Parameter Value
Base score 9.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H