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MilleGPG5 5.9.2 Local Privilege Escalation

CVE Category Price Severity
CVE-2023-25438 CWE-Other N/A High
Author Risk Exploitation Type Date
Unknown High Local 2023-04-27
CVSS EPSS EPSSP
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N 0.02192 0.50148

CVSS vector description

Our sensors found this exploit at: https://cxsecurity.com/ascii/WLB-2023040082

Below is a copy:

MilleGPG5 5.9.2 Local Privilege Escalation
# Exploit Title: MilleGPG5 5.9.2 (Gennaio 2023) - Local Privilege Escalation / Incorrect Access Control
# Date: 2023-04-28
# Exploit Author: Andrea Intilangelo
# Vendor Homepage: https://millegpg.it/
# Software Homepage: https://millegpg.it - https://millewin.it/prodotti/governo-clinico-3/
# Software Link: https://www.millegpg.it/download/MilleGPGInstall.exe
# Version: 5.9.2
# Tested on: Microsoft Windows 10 Enterprise x64 22H2, build 19045.2913
# CVE: CVE-2023-25438

MilleGPG / MilleGPG5 also known as "Governo Clinico 3"

Vendor: Millennium S.r.l. / Dedalus Group - Dedalus Italia S.p.a. / Genomedics S.r.l.

Affected/tested version: MilleGPG5 5.9.2

Summary:
Mille General Practice Governance (MilleGPG): an interactive tool to address an effective quality of care through the
Italian general practice network.
MilleGPG is an innovative IT support for the evaluation and optimization of patient care and intervention processes,
complete with new features for the management of the COVID-19 vaccine campaign. It is An irreplaceable "ally" for the
General Practitioner, also offering contextual access to the most authoritative scientific content and CME training.

Vuln desc:
The application is prone to insecure file/folder permissions on its default installation path, wrongly allowing some
files to be modified by unprivileged users, malicious process and/or threat actor. Attacker can exploit the weakness
abusing the "write" permission of the main application available to all users on the system or network.


Details:
Any low privileged user can elevate their privileges abusing files/folders that have incorrect permissions, e.g.:

C:\Program Files\MilleGPG5\MilleGPG5.exe    (main gui application)
C:\Program Files\MilleGPG5\plugin\          (GPGCommand.exe, nginx and php files)
C:\Program Files\MilleGPG5\k-platform\      (api and webapp files)

such as BUILTIN\Users:(I)(OI)(CI)(R,W) and/or FILE_GENERIC_WRITE, FILE_WRITE_DATA and FILE_WRITE_EA


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