Vtiger CRM 8.4.0 Authenticated RCE via Module Import File Upload

Vtiger CRM through 8.4.0 contains an authenticated remote code execution vulnerability in the admin module import feature that allows administrator-level attackers to upload arbitrary PHP files by submitting a crafted zip archive through the ModuleManager import function, which extracts contents directly into the modules/ directory under the web root without validating file types beyond the manifest.xml descriptor. Attackers can place executable PHP files in the modules/ directory that become directly accessible via HTTP, bypassing Vtiger's authentication and authorization layer entirely since Apache resolves the path and invokes the PHP interpreter before the application routing layer is involved, resulting in a persistent web shell independent of the originating session.

Vtiger CRM < 8.4.0 Authenticated File Upload RCE via Documents Module

Vtiger CRM before 8.4.0 contains an authenticated file upload vulnerability that allows low-privileged users to achieve remote code execution by uploading a .phar file containing arbitrary PHP code through the Documents module, bypassing the extension denylist in config.inc.php which omits the .phar extension. The uploaded file is stored with its original .phar extension under the web-accessible storage directory, and a misconfigured .htaccess using Apache 2.2 syntax is silently ignored on Apache 2.4 deployments, allowing unauthenticated HTTP requests to directly execute the uploaded PHP payload.

vtiger CRM before 5.1.0 allows remote authenticated users, with certain View privileges, to delete (1) attachments, (2) reports, (3) filters, (4) views, and (5) tickets; insert (6) attachments, (7) reports, (8) filters, (9) views, and (10) tickets; and edit (11) reports, (12) filters, (13) views, and (14) tickets via unspecified vectors.

Multiple directory traversal vulnerabilities in vtiger CRM 5.0.4 allow remote attackers to include and execute arbitrary local files via a .. (dot dot) in (1) the module parameter to graph.php; or the (2) module or (3) file parameter to include/Ajax/CommonAjax.php, reachable through modules/Campaigns/CampaignsAjax.php, modules/SalesOrder/SalesOrderAjax.php, modules/System/SystemAjax.php, modules/Products/ProductsAjax.php, modules/uploads/uploadsAjax.php, modules/Dashboard/DashboardAjax.php, modules/Potentials/PotentialsAjax.php, modules/Notes/NotesAjax.php, modules/Faq/FaqAjax.php, modules/Quotes/QuotesAjax.php, modules/Utilities/UtilitiesAjax.php, modules/Calendar/ActivityAjax.php, modules/Calendar/CalendarAjax.php, modules/PurchaseOrder/PurchaseOrderAjax.php, modules/HelpDesk/HelpDeskAjax.php, modules/Invoice/InvoiceAjax.php, modules/Accounts/AccountsAjax.php, modules/Reports/ReportsAjax.php, modules/Contacts/ContactsAjax.php, and modules/Portal/PortalAjax.php; and allow remote authenticated users to include and execute arbitrary local files via a .. (dot dot) in the step parameter in an Import action to the (4) Accounts, (5) Contacts, (6) HelpDesk, (7) Leads, (8) Potentials, (9) Products, or (10) Vendors module, reachable through index.php and related to modules/Import/index.php and multiple Import.php files.

include/utils/ListViewUtils.php in vtiger CRM before 5.1.0 allows remote authenticated users to bypass intended access restrictions and read the (1) visibility, (2) location, and (3) recurrence fields of a calendar via a custom view.

vtiger CRM before 5.1.0 allows remote authenticated users to bypass the permissions on the (1) Account Billing Address and (2) Shipping Address fields in a profile by creating a Sales Order (SO) associated with that profile.

Vtiger CRM before 5.0.4 stores sensitive information under the web root with insufficient access control, which allows remote attackers to read mail merge templates via a direct request to the wordtemplatedownload directory.

SQL injection vulnerability in the dashboard (include/utils/SearchUtils.php) in vtiger CRM before 5.0.3 allows remote authenticated users to execute arbitrary SQL commands via the assigned_user_id parameter in a Potentials ListView action to index.php.

Cross-site request forgery (CSRF) vulnerability in the RSS module in vtiger CRM 5.0.4 allows remote attackers to hijack the authentication of Admin users for requests that modify the news feed system via the rssurl parameter in a Save action to index.php.

Multiple PHP remote file inclusion vulnerabilities in Vtiger CRM 4.2 and earlier allow remote attackers to execute arbitrary PHP code via a URL in the calpath parameter to (1) modules/Calendar/admin/update.php, (2) modules/Calendar/admin/scheme.php, or (3) modules/Calendar/calendar.php.

index.php in vtiger CRM before 5.0.3 allows remote authenticated users to obtain all users' names and e-mail addresses, and possibly change user settings, via a modified record parameter in a DetailView action to the Users module. NOTE: the vendor disputes the changing of settings, reporting that the attack vector results in a "You are not permitted to execute this Operation" error message in a 5.0.3 demo.

vtiger CRM before 5.0.3 allows remote authenticated users to import and export the information for a contact even when they only have the View permission.

WordPlugin in the wordintegration component in vtiger CRM before 5.0.3 allows remote authenticated users to bypass field level security permissions and merge arbitrary fields in an Email template, as demonstrated by the fields in the Contact module.

vtiger CRM before 5.0.3, when a migrated build is used, allows remote authenticated users to read certain other users' calendar activities via a (1) home page or (2) event list view.

The SOAP webservice in vtiger CRM before 5.0.3 does not ensure that authenticated accounts are active, which allows remote authenticated users with inactive accounts to access and modify data, as demonstrated by the Thunderbird plugin.

Multiple cross-site scripting (XSS) vulnerabilities in vtiger CRM 5.0.4 allow remote attackers to inject arbitrary web script or HTML via (1) the parenttab parameter in an index action to the Products module, as reachable through index.php; (2) the user_password parameter in an Authenticate action to the Users module, as reachable through index.php; or (3) the query_string parameter in a UnifiedSearch action to the Home module, as reachable through index.php.

vtiger CRM before 5.0.3 allows remote authenticated users with access to the Analytics DashBoard menu to bypass data restrictions and read the pipeline of the entire organization, possibly involving modules/Potentials/Potentials.php.

index.php in vtiger CRM before 5.0.3 allows remote authenticated users to perform administrative changes to arbitrary profile settings via a certain profilePrivileges action in the Users module.

The report module in vtiger CRM before 5.0.3 does not properly apply security rules, which allows remote authenticated users to read arbitrary private module entries.

Cross-site scripting (XSS) vulnerability in the Activities module in vtiger CRM 5.0.4 allows remote attackers to inject arbitrary web script or HTML via the action parameter to phprint.php. NOTE: the query_string vector is already covered by CVE-2008-3101.3.