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CVE-2019-8321

Published: 27 March 2019

An issue was discovered in RubyGems 2.6 and later through 3.0.2. Since Gem::UserInteraction#verbose calls say without escaping, escape sequence injection is possible.

From the Ubuntu Security Team

It was discovered that Gem::UserInteraction#verbose failed to escape certain characters. An attacker could use this vulnerability inject escape sequences into a victim's terminal.

Notes

AuthorNote
tyhicks
ruby{1.9.1,2.0,2.3} and jruby ship an embedded rubygems.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
ruby2.0
Launchpad, Ubuntu, Debian
eoan Does not exist

groovy Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

trusty
Released (2.0.0.484-1ubuntu2.13)
bionic Does not exist

cosmic Does not exist

disco Does not exist

focal Does not exist

hirsute Does not exist

impish Does not exist

upstream Needs triage

xenial Does not exist

mantic Does not exist

jruby
Launchpad, Ubuntu, Debian
bionic Needed

cosmic Ignored
(end of life)
disco Ignored
(end of life)
eoan Not vulnerable
(9.1.17.0-3)
focal Not vulnerable
(9.1.17.0-3)
trusty
Released (1.5.6-9+deb8u2build0.14.04.1~esm2)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream Needs triage

xenial Not vulnerable
(code not present)
groovy Not vulnerable
(9.1.17.0-3)
lunar Not vulnerable
(9.1.17.0-3)
hirsute Not vulnerable
(9.1.17.0-3)
impish Not vulnerable
(9.1.17.0-3)
mantic Not vulnerable
(9.1.17.0-3)
ruby2.1
Launchpad, Ubuntu, Debian
bionic Does not exist

groovy Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

hirsute Does not exist

impish Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

mantic Does not exist

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

jammy Does not exist

kinetic Does not exist

lunar Does not exist

trusty
Released (1.9.3.484-2ubuntu1.14)
bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

hirsute Does not exist

impish Does not exist

upstream Needs triage

xenial Does not exist

mantic Does not exist

ruby2.3
Launchpad, Ubuntu, Debian
groovy Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

hirsute Does not exist

impish Does not exist

trusty Does not exist

upstream Needs triage

xenial
Released (2.3.1-2~16.04.12)
mantic Does not exist

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

jammy Does not exist

kinetic Does not exist

lunar Does not exist

bionic
Released (2.5.1-1ubuntu1.2)
cosmic
Released (2.5.1-5ubuntu4.3)
disco
Released (2.5.5-1)
eoan
Released (2.5.5-1)
focal Does not exist

hirsute Does not exist

impish 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 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact High
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N