exploit the possibilities
Home Files News &[SERVICES_TAB]About Contact Add New

HP ThinPro 6.x / 7.x Filter Bypass

HP ThinPro 6.x / 7.x Filter Bypass
Posted Mar 25, 2020
Authored by Eldar Marcussen

HP ThinPro versions 7.1, 7.0, 6.2.1, and 6.2 suffer from an application filter bypass vulnerability.

tags | exploit, bypass
advisories | CVE-2019-16286
SHA-256 | 99ae4d99639a753124299498c99f9195e518195f8a8f6da78f571fd9c30371c5

HP ThinPro 6.x / 7.x Filter Bypass

Change Mirror Download
HP ThinPro - Application filter bypass
===============================================================================

Identifiers
-------------------------------------------------
* CVE-2019-16286

CVSSv3 score
-------------------------------------------------
6.1 (AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N)

Vendor
-------------------------------------------------
HP - [https://www.hp.com](https://www.hp.com)

Product
-------------------------------------------------
Deliver secure desktop virtualization that’s as comfortable for IT as it is
for end users with the stunningly redesigned HP ThinPro. It has a bold new
user interface and workflow refinements that make it a breeze to configure,
manage, and use right out of the box.

Affected versions
-------------------------------------------------
- HP ThinPro Linux 7.1
- HP ThinPro Linux 7.0
- HP ThinPro Linux 6.2.1
- HP ThinPro Linux 6.2

Credit
-------------------------------------------------
Eldar Marcussen - xen1thLabs - Software Labs

Vulnerability summary
-------------------------------------------------
The HP ThinPro allows administrators to determine what applications users
can run, however attackers can bypass these restrictions to spawn
restricted applications and run arbitrary commands on the device.

Technical details
------------------------------------------------
There are several paths to exploit this, but the most common path is to
find exploit it directly from a `Web Browser` connection, or find a
clickable link that will spawn firefox from one of the other connections.
Once in firefox the attacker can access preferences to configure which
application handles certain filetypes and use this to spawn another
application. The list of possible applications is restricted, but it is
possible to spawn `/usr/bin/hptc-kiosk` which supports creating custom
connections which can run arbitrary commands.

Proof of concept
-------------------------------------------------
The following evidence is provided to illustrate the existence and
exploitation:

1. In a `Web Browser` connection open Firefox's `Preferences`
2. Select the `Applications` section
3. Locate the `Portable Document Format (PDF)` content type and select `Use
other` from the drop down menu
4. Navigate to `/usr/bin/hptc-kiosk` and press Open
5. Verify that the PDF handler is set to `Use hptc-kiosk`
6. Open a new tab and type the following in the address bar
`data:application/pdf,pwnt!`
and press enter
7. Observe that a `Connection manager` window now opens
8. Click on the `+` icon in the bottom right
9. Select `Custom`
10. Enter `xterm` in the textbox for command to run and click Finish
11. Select the newly created connection
12. Click the `->` icon in the bottom left corner
13. Observe xterm spawning

Solution
-------------------------------------------------
Contact vendor for a solution

Timeline
-------------------------------------------------
Date | Status
------------|-----------------------------
19-AUG-2019 | Reported to vendor
22-NOV-2019 | Patch available
24-MAR-2020 | Public disclosure


Login or Register to add favorites

File Archive:

November 2022

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Nov 1st
    16 Files
  • 2
    Nov 2nd
    17 Files
  • 3
    Nov 3rd
    17 Files
  • 4
    Nov 4th
    11 Files
  • 5
    Nov 5th
    0 Files
  • 6
    Nov 6th
    0 Files
  • 7
    Nov 7th
    3 Files
  • 8
    Nov 8th
    59 Files
  • 9
    Nov 9th
    12 Files
  • 10
    Nov 10th
    6 Files
  • 11
    Nov 11th
    11 Files
  • 12
    Nov 12th
    1 Files
  • 13
    Nov 13th
    0 Files
  • 14
    Nov 14th
    9 Files
  • 15
    Nov 15th
    33 Files
  • 16
    Nov 16th
    53 Files
  • 17
    Nov 17th
    11 Files
  • 18
    Nov 18th
    14 Files
  • 19
    Nov 19th
    0 Files
  • 20
    Nov 20th
    0 Files
  • 21
    Nov 21st
    26 Files
  • 22
    Nov 22nd
    22 Files
  • 23
    Nov 23rd
    10 Files
  • 24
    Nov 24th
    9 Files
  • 25
    Nov 25th
    11 Files
  • 26
    Nov 26th
    0 Files
  • 27
    Nov 27th
    0 Files
  • 28
    Nov 28th
    20 Files
  • 29
    Nov 29th
    9 Files
  • 30
    Nov 30th
    21 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Hosting By
Rokasec
close