CVE-2017-11565: Debian Tor

High severity, CVSS 7.5. EPSS: 1.3% chance of exploitation in the next 30 days.

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).

Affected products

• Debian Tor: version 0.2.9.11-1 only

Published 2017-07-23. Last modified 2026-06-17.