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CVE-2019-8320

Published: 27 March 2019

A Directory Traversal issue was discovered in RubyGems 2.7.6 and later through 3.0.2. Before making new directories or touching files (which now include path-checking code for symlinks), it would delete the target destination. If that destination was hidden behind a symlink, a malicious gem could delete arbitrary files on the user's machine, presuming the attacker could guess at paths. Given how frequently gem is run as sudo, and how predictable paths are on modern systems (/tmp, /usr, etc.), this could likely lead to data loss or an unusable system.

Notes

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

Medium

CVSS 3 base score: 7.4

Status

Package Release Status
jruby
Launchpad, Ubuntu, Debian
bionic Needed

cosmic Ignored
(reached end-of-life)
disco Ignored
(reached end-of-life)
eoan Not vulnerable
(9.1.17.0-3)
focal Not vulnerable
(9.1.17.0-3)
groovy Not vulnerable
(9.1.17.0-3)
hirsute Not vulnerable
(9.1.17.0-3)
impish Not vulnerable
(9.1.17.0-3)
precise Does not exist

trusty Needs triage

upstream Needs triage

xenial Not vulnerable
(code not present)
ruby1.9.1
Launchpad, Ubuntu, Debian
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

impish Does not exist

jammy Does not exist

kinetic Does not exist

precise Does not exist

trusty Does not exist
(trusty was released [1.9.3.484-2ubuntu1.14])
upstream Needs triage

xenial Does not exist

ruby2.0
Launchpad, Ubuntu, Debian
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

impish Does not exist

jammy Does not exist

kinetic Does not exist

precise Does not exist

trusty Does not exist
(trusty was released [2.0.0.484-1ubuntu2.13])
upstream Needs triage

xenial Does not exist

ruby2.1
Launchpad, Ubuntu, Debian
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

impish Does not exist

jammy Does not exist

kinetic Does not exist

precise Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

ruby2.3
Launchpad, Ubuntu, Debian
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

impish Does not exist

jammy Does not exist

kinetic Does not exist

precise Does not exist

trusty Does not exist

upstream Needs triage

xenial
Released (2.3.1-2~16.04.12)
ruby2.5
Launchpad, Ubuntu, Debian
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

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

precise Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist