CVE-2017-11565 : What You Need to Know

CVE-2017-11565 was published on July 23, 2017, and affects the Debian tor_0.2.9.11-1~deb9u1 package for Tor. The vulnerability lies in the debian/tor.init script, allowing attackers to bypass AppArmor restrictions.

Understanding CVE-2017-11565

This CVE impacts the Tor package in Debian due to an incorrect implementation in the tor.init script, enabling attackers to evade AppArmor restrictions.

What is CVE-2017-11565?

The vulnerability in the Debian tor_0.2.9.11-1~deb9u1 package for Tor allows attackers to bypass AppArmor restrictions by exploiting a flaw in the tor.init script.

The Impact of CVE-2017-11565

The vulnerability enables attackers to circumvent the intended AppArmor protections, potentially leading to unauthorized access or other security breaches.

Technical Details of CVE-2017-11565

This section provides more technical insights into the vulnerability.

Vulnerability Description

The debian/tor.init script in the Tor package for Debian was designed to execute aa-exec from the standard system pathname when the apparmor package is installed. However, an incorrect implementation allows attackers to bypass AppArmor restrictions.

Affected Systems and Versions

Product: n/a
Vendor: n/a
Versions: n/a

Exploitation Mechanism

Attackers exploit the incorrect implementation in the tor.init script to evade the intended AppArmor restrictions, potentially compromising system security.

Mitigation and Prevention

To address CVE-2017-11565, follow these mitigation strategies:

Immediate Steps to Take

Update the Tor package to a patched version.
Monitor system logs for any suspicious activities.

Long-Term Security Practices

Regularly update all software packages to prevent vulnerabilities.
Implement strong access controls and monitoring mechanisms.

Patching and Updates

Apply patches provided by Debian to fix the vulnerability.