Vulnerability Details CVE-2017-11565
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).
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 43.2%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
References