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

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

Priority

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

References

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