CVE-2017-11565 — HIGH (7.5)

Vulnerability 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).

CVSS Score

7.5

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

HIGH

Availability

NONE

Affected Products

Vendor	Product	Versions
Debian	Tor	0.2.9.11-1

References

http://www.securityfocus.com/bid/99933Third Party AdvisoryVDB Entry
https://bugs.debian.org/869153Issue TrackingMailing ListVendor Advisory
http://www.securityfocus.com/bid/99933Third Party AdvisoryVDB Entry
https://bugs.debian.org/869153Issue TrackingMailing ListVendor Advisory

FAQ

What is CVE-2017-11565?

CVE-2017-11565 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 incorrec...

How severe is CVE-2017-11565?

CVE-2017-11565 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2017-11565?

Check the references section above for vendor advisories and patch information. Affected products include: Debian Tor.