{"id":"UBUNTU-CVE-2018-1000079","details":"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.","modified":"2026-04-22T11:39:17.795050Z","published":"2018-03-13T00:00:00Z","related":["USN-3621-1"],"upstream":["CVE-2018-1000079"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-1000079"},{"type":"REPORT","url":"https://github.com/rubygems/rubygems/commit/f83f911e19e27cbac1ccce7471d96642241dd759"},{"type":"REPORT","url":"https://github.com/rubygems/rubygems/commit/666ef793cad42eed96f7aee1cdf77865db921099"},{"type":"REPORT","url":"https://www.ruby-lang.org/en/news/2018/02/17/multiple-vulnerabilities-in-rubygems/"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3621-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-1000079"}],"affected":[{"package":{"name":"ruby2.0","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/ruby2.0@2.0.0.484-1ubuntu2.6?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.0.484-1ubuntu2.6"}]}],"versions":["2.0.0.299-2","2.0.0.343-1","2.0.0.343-1ubuntu1","2.0.0.353-1","2.0.0.353-1ubuntu1","2.0.0.484-1ubuntu1","2.0.0.484-1ubuntu2","2.0.0.484-1ubuntu2.1","2.0.0.484-1ubuntu2.2","2.0.0.484-1ubuntu2.4","2.0.0.484-1ubuntu2.5"],"ecosystem_specific":{"binaries":[{"binary_version":"2.0.0.484-1ubuntu2.6","binary_name":"libruby2.0"},{"binary_version":"2.0.0.484-1ubuntu2.6","binary_name":"ruby2.0"},{"binary_version":"2.0.0.484-1ubuntu2.6","binary_name":"ruby2.0-tcltk"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-1000079.json"}},{"package":{"name":"jruby","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/jruby@1.5.6-9+deb8u2build0.14.04.1~esm2?arch=source&distro=esm-infra-legacy/trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.5.6-5ubuntu1","1.5.6-6","1.5.6-7","1.5.6-9+deb8u2build0.14.04.1~esm2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.5.6-9+deb8u2build0.14.04.1~esm2","binary_name":"jruby"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-1000079.json"}},{"package":{"name":"ruby2.3","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/ruby2.3@2.3.1-2~16.04.7?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.3.1-2~16.04.7"}]}],"versions":["2.3.0-1","2.3.0-2","2.3.0-4ubuntu2","2.3.0-4ubuntu3","2.3.0-5ubuntu1","2.3.1-2~16.04","2.3.1-2~16.04.2","2.3.1-2~16.04.4","2.3.1-2~16.04.5","2.3.1-2~16.04.6"],"ecosystem_specific":{"binaries":[{"binary_version":"2.3.1-2~16.04.7","binary_name":"libruby2.3"},{"binary_version":"2.3.1-2~16.04.7","binary_name":"ruby2.3"},{"binary_version":"2.3.1-2~16.04.7","binary_name":"ruby2.3-tcltk"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-1000079.json"}},{"package":{"name":"jruby","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/jruby@1.7.22-1ubuntu1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.7.21-2ubuntu4","1.7.22-1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.7.22-1ubuntu1","binary_name":"jruby"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-1000079.json"}},{"package":{"name":"jruby","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/jruby@9.1.17.0-1~18.04?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["9.1.13.0-1","9.1.17.0-1~18.04"],"ecosystem_specific":{"binaries":[{"binary_version":"9.1.17.0-1~18.04","binary_name":"jruby"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-1000079.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"},{"type":"Ubuntu","score":"medium"}]}