{"id":"UBUNTU-CVE-2017-11565","details":"debian/tor.init in the Debian tor_0.2.9.11-1~deb9u1 package for Tor was designed to execute aa-exec from the standard system pathname if the apparmor package is installed, but implements this incorrectly (with a wrong assumption that the specific pathname would remain the same forever), which allows attackers to bypass intended AppArmor restrictions by leveraging the silent loss of this protection mechanism. NOTE: this does not affect systems, such as default Debian stretch installations, on which Tor startup relies on a systemd unit file (instead of this tor.init script).","modified":"2025-09-08T16:44:19Z","published":"2017-07-23T20:29:00Z","upstream":["CVE-2017-11565"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-11565"},{"type":"REPORT","url":"https://twitter.com/pissquark/status/888142796414226432"},{"type":"REPORT","url":"https://bugs.debian.org/869153"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2017-11565"}],"affected":[{"package":{"name":"tor","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/tor@0.2.4.27-1ubuntu0.1+esm1?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.2.4.27-1ubuntu0.1+esm1"}]}],"versions":["0.2.3.25-1","0.2.4.19-1","0.2.4.20-1","0.2.4.27-1build0.14.04.1","0.2.4.27-1ubuntu0.1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"tor","binary_version":"0.2.4.27-1ubuntu0.1+esm1"},{"binary_name":"tor-geoipdb","binary_version":"0.2.4.27-1ubuntu0.1+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-11565.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"type":"Ubuntu","score":"medium"}]}