Weakness (CWE)
CWE-434: Unrestricted Upload of File with Dangerous Type
The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.
How to prevent it (8 mitigations)
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Architecture and Design
Generate a new, unique filename for an uploaded file instead of using the user-supplied filename, so that no external input is used at all.[REF-422] [REF-423]
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Architecture and Design
When the set of acceptable objects, such as filenames or URLs, is limited or known, create a mapping from a set of fixed input values (such as numeric IDs) to the actual filenames or URLs, and reject all other inputs.
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Architecture and Design
Consider storing the uploaded files outside of the web document root entirely. Then, use other mechanisms to deliver the files dynamically. [REF-423]
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Implementation
Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
For example, limiting filenames to alphanumeric characters can help to restrict the introduction of unintended file extensions.
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Architecture and Design
Define a very limited set of allowable extensions and only generate filenames that end in these extensions. Consider the possibility of XSS (CWE-79) before allowing .html or .htm file types.
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Implementation
Ensure that only one extension is used in the filename. Some web servers, including some versions of Apache, may process files based on inner extensions so that "filename.php.gif" is fed to the PHP interpreter.[REF-422] [REF-423]
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Implementation
When running on a web server that supports case-insensitive filenames, perform case-insensitive evaluations of the extensions that are provided.
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Architecture and Design
For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.
Source: MITRE CWE-434
1,210 results · Clear filters · Feed
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High 7.2
Greenshift – animation and page builder blocks <= 7.6.2 - Authenticated (Administrator+) Arbitrary File Upload
The Greenshift – animation and page builder blocks plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation on the 'gspb_save_files' function in versions up to, and including, 7.6.2. This makes it possible for authentic…
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High 7.2
Export and Import Users and Customers <= 2.4.8 - Authenticated (Shop Manager+) Arbitrary File Upload
The Export and Import Users and Customers plugin for WordPress is vulnerable to arbitrary file uploads due to insufficient file type validation on the 'upload_import_file' function in versions up to, and including, 2.4.8. This makes it possible for authentica…
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High 8.8
Customer Reviews for WooCommerce <= 5.38.9 - Authenticated (Author+) Arbitrary File Upload
The Customer Reviews for WooCommerce plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the ivole_import_upload_csv AJAX action in all versions up to, and including, 5.38.9. This makes it possible for authentic…
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High 7.2
File Upload vulnerability PMB v.7.4.8 allows a remote attacker to execute arbitrary code and escalate privileges via a …
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High 7.3
Likeshop HTTP POST Request File.php userFormImage unrestricted upload
A vulnerability classified as critical was found in Likeshop up to 2.5.7.20210311. This vulnerability affects the function FileServer::userFormImage of the file server/application/api/controller/File.php of the component HTTP POST Request Handler. The manipul…
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High 8.8
Online Notice Board System v1.0 - Insecure File Upload
Online Notice Board System v1.0 is vulnerable to an Insecure File Upload vulnerability on the 'f' parameter of user/update_profile_pic.php page, allowing an authenticated attacker to obtain Remote Code Execution on the server hosting the application.
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High 8.2
Unauthenticated File Upload affects DRYiCE MyXalytics
HCL DRYiCE MyXalytics product is impacted by unauthenticated file upload vulnerability. The web application permits the upload of a certain file without requiring user authentication.
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High 7.2
An issue was discovered on GL.iNet devices through 4.5.0. Attackers who are able to steal the AdminToken cookie can exe…
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High 8.8
File Upload vulnerability in JIZHICMS v.2.5, allows remote attacker to execute arbitrary code via a crafted file upload…
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High 8.0
IBM Planning Analytics file upload
IBM Planning Analytics Local 2.0 could allow a remote attacker to upload arbitrary files, caused by the improper validation of file extensions. By sending a specially crafted HTTP request, a remote attacker could exploit this vulnerability to upload a malicio…
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High 8.8
TOTOlink EX1200L V9.3.5u.6146_B20201023 is vulnerable to arbitrary command execution via the cstecgi.cgi UploadFirmware…
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High 8.4
WordPress Slider Revolution Plugin <= 6.6.15 is vulnerable to Arbitrary File Upload
Unrestricted Upload of File with Dangerous Type vulnerability in ThemePunch OHG Slider Revolution.This issue affects Slider Revolution: from n/a through 6.6.15.
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High 8.8
Unrestricted Upload of File with Dangerous Type
This vulnerability is capable of writing arbitrary files into arbitrary locations on the remote filesystem in the context of the server process.
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High 8.8
Kaifa Technology WebITR - Arbitrary File Upload
Kaifa Technology WebITR is an online attendance system, its file uploading function does not restrict upload of file with dangerous type. A remote attacker with regular user privilege can exploit this vulnerability to upload arbitrary files to perform arbitra…
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High 7.5
Essential Real Estate <= 4.3.5 - Authenticated (Subscriber+) Arbitrary File Upload
The Essential Real Estate plugin for WordPress is vulnerable to arbitrary file uploads due to insufficient file type validation on the 'ajaxUploadFonts' function in versions up to, and including, 4.3.5. This makes it possible for authenticated attackers with …
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High 7.2
E2Pdf <= 1.20.25 - Authenticated (Administrator+) Arbitrary File Upload
The E2Pdf plugin for WordPress is vulnerable to arbitrary file uploads due to insufficient file type validation on the 'import_action' function in versions up to, and including, 1.20.25. This makes it possible for authenticated attackers with a role that the …
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High 8.8
An arbitrary file upload vulnerability in the component /inc/modules_install.php of Pluck-CMS v4.7.18 allows attackers …
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High 7.5
Failure when uploading a Logo image file
AMI AptioV contains a vulnerability in BIOS where a User may cause an unrestricted upload of a BMP Logo file with dangerous type by Local access. A successful exploit of this vulnerability may lead to a loss of Confidentiality, Integrity, and/or Availability.
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High 7.5CVE-2023-39539 Public exploit
Failure when uploading a Logo image file
AMI AptioV contains a vulnerability in BIOS where a User may cause an unrestricted upload of a PNG Logo file with dangerous type by Local access. A successful exploit of this vulnerability may lead to a loss of Confidentiality, Integrity, and/or Availability.
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High 7.1
Improper input leads to DoS
The ACEManager component of ALEOS 4.16 and earlier does not validate uploaded file names and types, which could potentially allow an authenticated user to perform client-side script execution within ACEManager, altering the device functionality until the devi…
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High 8.8
ThinkAdmin arbitrary file upload vulnerability
An arbitrary file upload vulnerability in the component /admin/api.upload/file of ThinkAdmin v6.1.53 allows attackers to execute arbitrary code via a crafted Zip file.
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High 7.5
Plaintext Storage of a Password in ArslanSoft's Education Portal
Unrestricted Upload of File with Dangerous Type vulnerability in ArslanSoft Education Portal allows Read Sensitive Strings Within an Executable. This issue affects Education Portal: before v1.1.
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High 8.8CVE-2023-49052 Public exploit
Microweber file upload vulnerability
File Upload vulnerability in Microweber v.2.0.4 allows a remote attacker to execute arbitrary code via a crafted script to the file upload function in the created forms component.
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High 8.8
Chamilo LMS File Upload Functionality Remote Code Execution
Unrestricted file upload in `/main/inc/ajax/exercise.ajax.php` in Chamilo LMS <= v1.11.24 allows authenticated attackers with learner role to obtain remote code execution via uploading of PHP files.
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High 8.8CVE-2023-4226 Public exploit
Chamilo LMS File Upload Functionality Remote Code Execution
Unrestricted file upload in `/main/inc/ajax/work.ajax.php` in Chamilo LMS <= v1.11.24 allows authenticated attackers with learner role to obtain remote code execution via uploading of PHP files.
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High 8.8
Chamilo LMS File Upload Functionality Remote Code Execution
Unrestricted file upload in `/main/inc/ajax/dropbox.ajax.php` in Chamilo LMS <= v1.11.24 allows authenticated attackers with learner role to obtain remote code execution via uploading of PHP files.
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High 8.8
Chamilo LMS File Upload Functionality Remote Code Execution
Unrestricted file upload in `/main/inc/ajax/document.ajax.php` in Chamilo LMS <= v1.11.24 allows authenticated attackers with learner role to obtain remote code execution via uploading of PHP files.
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High 8.1
Chamilo LMS Unauthenticated Big Upload File Remote Code Execution
Unrestricted file upload in big file upload functionality in `/main/inc/lib/javascript/bigupload/inc/bigUpload.php` in Chamilo LMS <= v1.11.24 allows unauthenticated attackers to perform stored cross-site scripting attacks and obtain remote code execution via…
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High 7.2
BookingPress <= 1.0.76 - Authenticated (Administrator+) Arbitrary File Upload
The BookingPress plugin for WordPress is vulnerable to arbitrary file uploads due to insufficient file validation on the 'bookingpress_process_upload' function in versions up to, and including, 1.0.76. This makes it possible for authenticated attackers with a…
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High 7.6
Remote Code Execution via File Uploader
Unrestricted Upload of File with Dangerous Type vulnerability in Pandora FMS on all allows Accessing Functionality Not Properly Constrained by ACLs. This vulnerability allows attackers to execute code via PHP file uploads. This issue affects Pandora FMS: from…
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High 8.1
Drag and Drop Multiple File Upload - Contact Form 7 <= 1.3.7.3 - Unauthenticated Arbitrary File Upload
The Drag and Drop Multiple File Upload - Contact Form 7 plugin for WordPress is vulnerable to arbitrary file uploads due to insufficient file type validation in the 'dnd_upload_cf7_upload' function in versions up to, and including, 1.3.7.3. This makes it poss…
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High 7.5CVE-2023-6187 EPSS 51%
Paid Memberships Pro <= 2.12.3 - Authenticated (Subscriber+) Arbitrary File Upload
The Paid Memberships Pro plugin for WordPress is vulnerable to arbitrary file uploads due to insufficient file type validation in the 'pmpro_paypalexpress_session_vars_for_user_fields' function in versions up to, and including, 2.12.3. This makes it possible …
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High 8.8
Remote code execution via form uploads in statamic/cms
Statamic is a flat-first, Laravel + Git powered CMS designed for building websites. In affected versions certain additional PHP files crafted to look like images may be uploaded regardless of mime type validation rules. This affects front-end forms using the …
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High 8.8
Remote code execution via file uploads in guest-entries
Guest Entries is a php library which allows users to create, update & delete entries from the front-end of a site. In affected versions the file uploads feature did not prevent the upload of PHP files. This may lead to code execution on the server by authenti…
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High 8.4CVE-2023-47129 Public exploit
Statamic CMS remote code execution via front-end form uploads
Statmic is a core Laravel content management system Composer package. Prior to versions 3.4.13 and 4.33.0, on front-end forms with an asset upload field, PHP files crafted to look like images may be uploaded. This only affects forms using the "Forms" feature …
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High 8.8
RemoteClinic 2.0 contains a critical vulnerability chain that can be exploited by a remote attacker with low-privileged…
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High 7.8
Ivanti Avalanche EnterpriseServer Service Unrestricted File Upload Local Privilege Escalation Vulnerability
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High 8.8
Galaxy Software Services Vitals ESP - Arbitrary File Upload
Galaxy Software Services Corporation Vitals ESP is an online knowledge base management portal, it has insufficient filtering and validation during file upload. An authenticated remote attacker with general user privilege can exploit this vulnerability to uplo…
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High 7.2
Icons Font Loader <= 1.1.2 - Authenticated (Administrator+) Arbitrary File Upload
The Icons Font Loader plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the upload function in all versions up to, and including, 1.1.2. This makes it possible for authenticated attackers, with administrator-l…
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High 8.8
Bitrix24 Remote Command Execution (RCE) via Insecure Temporary File Creation
Insecure temporary file creation in bitrix/modules/crm/lib/order/import/instagram.php in Bitrix24 22.0.300 hosted on Apache HTTP Server allows remote authenticated attackers to execute arbitrary code via uploading a crafted ".htaccess" file.