CVE Catalog

CVE-2017-11565

High
Published: Translated: NVD NIST

Summary

In the Debian tor_0.2.9.11-1~deb9u1 package, the debian/tor.init script was designed to execute aa-exec from the standard system pathname if the AppArmor package is installed, but this implementation is incorrect. This allows attackers to bypass intended AppArmor restrictions.

Risk Assessment

Organizations may be exposed to attacks that exploit this vulnerability, potentially leading to security breaches. Systems relying on the tor.init script are particularly at risk.

Recommendation

It is recommended to update the Tor package to the latest version that addresses this vulnerability and to consider using systemd to start Tor to avoid issues related to this script.

Related vulnerabilities

Original NVD description (English source)

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).

Vulnerability data from NVD (NIST) · CISA KEV · EPSS