CVE-2018-1000079

Published: 13 March 2018

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Directory Traversal vulnerability in gem installation that can result in the gem could write to arbitrary filesystem locations during installation. This attack appear to be exploitable via the victim must install a malicious gem. This vulnerability appears to have been fixed in 2.7.6.

Notes

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

Priority

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package	Release	Status
jruby Launchpad, Ubuntu, Debian	artful	Ignored (reached end-of-life)
	bionic	Needs triage
	cosmic	Ignored (reached end-of-life)
	disco	Not vulnerable (9.1.17.0-2)
	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	Needs triage
ruby1.9.1 Launchpad, Ubuntu, Debian	artful	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
	impish	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was not-affected [code not present])
	upstream	Needs triage
	xenial	Does not exist
ruby2.0 Launchpad, Ubuntu, Debian	artful	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
	impish	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was released [2.0.0.484-1ubuntu2.6])
	upstream	Needs triage
	xenial	Does not exist
ruby2.1 Launchpad, Ubuntu, Debian	artful	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
	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	artful	Released (2.3.3-1ubuntu1.4)
	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 (2.3.1-2~16.04.7)
ruby2.5 Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Released (2.5.1-1)
	cosmic	Released (2.5.1-1)
	disco	Released (2.5.1-1)
	eoan	Released (2.5.1-1)
	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

Severity score breakdown

Parameter	Value
Base score	5.5
Attack vector	Local
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	None
Integrity impact	High
Availability impact	None
Vector	CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

References

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