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CVE-2018-16395

Published: 26 October 2018

An issue was discovered in the OpenSSL library in Ruby before 2.3.8, 2.4.x before 2.4.5, 2.5.x before 2.5.2, and 2.6.x before 2.6.0-preview3. When two OpenSSL::X509::Name objects are compared using ==, depending on the ordering, non-equal objects may return true. When the first argument is one character longer than the second, or the second argument contains a character that is one less than a character in the same position of the first argument, the result of == will be true. This could be leveraged to create an illegitimate certificate that may be accepted as legitimate and then used in signing or encryption operations.

Priority

Medium

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
ruby1.9.1
Launchpad, Ubuntu, Debian
impish Does not exist

jammy Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

kinetic Does not exist

lunar Does not exist

trusty
Released (1.9.3.484-2ubuntu1.13)
upstream Needs triage

xenial Does not exist

mantic Does not exist

ruby2.0
Launchpad, Ubuntu, Debian
impish Does not exist

jammy Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

kinetic Does not exist

lunar Does not exist

trusty
Released (2.0.0.484-1ubuntu2.11)
upstream Needs triage

xenial Does not exist

mantic Does not exist

Patches:
upstream: https://github.com/ruby/openssl/commit/f653cfa43f0f20e8c440122ea982382b6228e7f5
ruby2.3
Launchpad, Ubuntu, Debian
impish Does not exist

jammy Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

kinetic Does not exist

lunar Does not exist

trusty Does not exist

upstream Needs triage

xenial
Released (2.3.1-2~16.04.11)
mantic Does not exist

ruby2.5
Launchpad, Ubuntu, Debian
impish Does not exist

jammy Does not exist

bionic
Released (2.5.1-1ubuntu1.1)
cosmic
Released (2.5.1-5ubuntu4.1)
disco
Released (2.5.1-6ubuntu3)
eoan
Released (2.5.1-6ubuntu3)
focal Does not exist

groovy Does not exist

hirsute Does not exist

kinetic Does not exist

lunar Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

mantic Does not exist

ruby-openssl
Launchpad, Ubuntu, Debian
impish Does not exist

jammy Does not exist

bionic Needs triage

cosmic Ignored
(end of life)
disco Not vulnerable
(2.1.2-1)
eoan Not vulnerable
(2.1.2-1)
focal Does not exist

groovy Does not exist

hirsute Does not exist

kinetic Does not exist

lunar Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

mantic Does not exist

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