{"id":"UBUNTU-CVE-2019-3881","details":"Bundler prior to 2.1.0 uses a predictable path in /tmp/, created with insecure permissions as a storage location for gems, if locations under the user's home directory are not available. If Bundler is used in a scenario where the user does not have a writable home directory, an attacker could place malicious code in this directory that would be later loaded and executed.","modified":"2026-02-04T03:50:05.755810Z","published":"2020-09-04T12:15:00Z","related":["USN-4870-1"],"upstream":["CVE-2019-3881"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-3881"},{"type":"REPORT","url":"https://salsa.debian.org/ruby-team/bundler/blob/debian/1.16.1-2/debian/patches/0006-Don-t-use-insecure-temporary-directory-as-home-direc.patch"},{"type":"REPORT","url":"https://salsa.debian.org/ruby-team/bundler/blob/debian/1.16.1-2/debian/patches/0007-Remove-temporary-home-directories.patch"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4870-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2019-3881"}],"affected":[{"package":{"name":"bundler","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/bundler@1.16.1-1ubuntu0.1~esm1?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.16.1-1ubuntu0.1~esm1"}]}],"versions":["1.15.1-1","1.16.1-1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_name":"bundler","binary_version":"1.16.1-1ubuntu0.1~esm1"},{"binary_name":"ruby-bundler","binary_version":"1.16.1-1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-3881.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}