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Orthanc DICOM Server 1.1.0 Unquoted Service Path Privilege Escalation

Orthanc DICOM Server 1.1.0 Unquoted Service Path Privilege Escalation
Posted Dec 16, 2016
Authored by LiquidWorm | Site zeroscience.mk

Orthanc DICOM Server version 1.1.0 suffers from an unquoted service path privilege escalation vulnerability.

tags | exploit
SHA-256 | 76b846adfc40341c35a17e554bdc362b64195afe43134ca0cd28df0353dc8f9f

Orthanc DICOM Server 1.1.0 Unquoted Service Path Privilege Escalation

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Orthanc DICOM Server 1.1.0 Unquoted Service Path Privilege Escalation


Vendor: SA(c)bastien Jodogne
Product web page: http://www.orthanc-server.com
Affected version: 1.1.0

Summary: Orthanc is a Belgian, open-source, lightweight RESTful DICOM server
for healthcare and medical research with an ubiquitous web interface that
enables you to upload, receive and transfer DICOM images. It comes with
a REST API to automate imaging flows and an SDK to integrate with native
applications.

Desc: The application suffers from an unquoted search path issue impacting the
service 'orthanc' for Windows deployed as part of Orthanc DICOM server solution.
This could potentially allow an authorized but non-privileged local user to execute
arbitrary code with elevated privileges on the system. A successful attempt would
require the local user to be able to insert their code in the system root path
undetected by the OS or other security applications where it could potentially be
executed during application startup or reboot. If successful, the local useras code
would execute with the elevated privileges of the application.

Tested on: Microsoft Windows 7 Professional SP1 (EN)


Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
@zeroscience


Advisory ID: ZSL-2016-5379
Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5379.php

Vendor: https://bitbucket.org/sjodogne/orthanc/src/Orthanc-1.2.0/NEWS?fileviewer=file-view-default


22.11.2016

--


C:\>sc qc orthanc
[SC] QueryServiceConfig SUCCESS

SERVICE_NAME: orthanc
TYPE : 10 WIN32_OWN_PROCESS
START_TYPE : 2 AUTO_START
ERROR_CONTROL : 1 NORMAL
BINARY_PATH_NAME : C:\Program Files (x86)\Orthanc\Orthanc Server 1.1.0\OrthancService.exe
LOAD_ORDER_GROUP :
TAG : 0
DISPLAY_NAME : Orthanc
DEPENDENCIES :
SERVICE_START_NAME : LocalSystem

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