CVE-2017-11565

Description

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).

7.5

CVSS

Severity: High

CVSS 3.0 •

CVSS 2.0 •

EPSS 0.21%

Vendor Advisory debian.org

Affected: n/a n/a

References

Link	Tags
http://www.securityfocus.com/bid/99933	third party advisory vdb entry
https://bugs.debian.org/869153	vendor advisory mailing list issue tracking

Frequently Asked Questions

What is the severity of CVE-2017-11565?: CVE-2017-11565 has been scored as a high severity vulnerability.
How to fix CVE-2017-11565?: To fix CVE-2017-11565, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-11565 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2017-11565 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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