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
3,441 results · Feed
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Medium 4.7
October allows an admin account to upload PDF containing malicious JavaScript
October 3.6.30 allows an authenticated admin account to upload a PDF file containing malicious JavaScript into the target system. If the file is accessed through the website, it could lead to a Cross-Site Scripting (XSS) attack or execute arbitrary code via a…
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Medium 4.8
Zenario allows authenticated admin users to upload PDF files containing malicious code
Zenario 9.7.61188 allows authenticated admin users to upload PDF files containing malicious code into the target system. If the PDF file is accessed through the website, it can trigger a Cross Site Scripting (XSS) attack.
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Medium 4.6
LibreNMS Contains a Stored XSS via File Upload
LibreNMS is an open-source, PHP/MySQL/SNMP-based network monitoring system. Stored Cross-Site Scripting (XSS) can be achieved by uploading a new Background for a Custom Map. Users with "admin" role can set background for a custom map, this allow the upload of…
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Critical 9.8
Wechat Social login <= 1.3.0 - Unauthenticated Arbitrary File Upload
The Wechat Social login plugin for WordPress is vulnerable to arbitrary file uploads due to insufficient file type validation in the 'convert_remoteimage_to_local' function in versions up to, and including, 1.3.0. This makes it possible for unauthenticated at…
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Medium 4.7
kalvinGit kvf-admin FileUploadKit.java fileUpload unrestricted upload
A vulnerability has been found in kalvinGit kvf-admin up to f12a94dc1ebb7d1c51ee978a85e4c7ed75c620ff and classified as critical. This vulnerability affects the function fileUpload of the file FileUploadKit.java. The manipulation of the argument file leads to …
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Medium 4.7
HuankeMao SCRM Administrator Backend WxkConfig.php upload_domain_verification_file unrestricted upload
A vulnerability, which was classified as critical, has been found in HuankeMao SCRM up to 0.0.3. Affected by this issue is the function upload_domain_verification_file of the file WxkConfig.php of the component Administrator Backend. The manipulation of the a…
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High 8.8
An arbitrary file upload vulnerability in YPay 1.2.0 allows attackers to execute arbitrary code via a ZIP archive to th…
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High 8.8
Agnai vulnerable to Remote Code Execution via JS Upload using Directory Traversal
Agnai is an artificial-intelligence-agnostic multi-user, mult-bot roleplaying chat system. A vulnerability in versions prior to 1.0.330 permits attackers to upload arbitrary files to attacker-chosen locations on the server, including JavaScript, enabling the …
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Medium 6.8
Advanced File Manager <= 5.2.8 - Authenticated (Subscriber+) Limited File Upload
Multiple plugins and/or themes for WordPress are vulnerable to Limited File Upload in various versions. This is due to a lack of proper checks to ensure lower-privileged roles cannot upload .css and .js files to arbitrary directories. This makes it possible f…
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High 7.5
Advanced File Manager <= 5.2.8 - Authenticated (Subscriber+) Arbitrary File Upload
The Advanced File Manager plugin for WordPress is vulnerable to arbitrary file uploads via the 'class_fma_connector.php' file in all versions up to, and including, 5.2.8. This makes it possible for authenticated attackers, with Subscriber-level access and abo…
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Critical 9.8
Jupiter X Core <= 4.6.5 - Unauthenticated Arbitrary File Upload
The Jupiter X Core plugin for WordPress is vulnerable to arbitrary file uploads due to a mishandled file type validation in the 'validate' function in all versions up to, and including, 4.6.5. This makes it possible for unauthenticated attackers to upload arb…
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Critical 10.0
Unrestricted Upload of File with Dangerous Type vulnerability on Scriptcase
Vulnerability in the Scriptcase application version 9.4.019, which involves the arbitrary upload of a file via /scriptcase/devel/lib/third/jquery_plugin/jQuery-File-Upload/server/php/ via a POST request. An attacker could upload malicious files to the server …
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Critical 9.8
File Upload vulnerability in CS-Cart MultiVendor 4.16.1 allows remote attackers to run arbitrary code via the image upl…
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High 8.8
File Upload vulnerability in CS-Cart MultiVendor 4.16.1 allows remote attackers to run arbitrary code via File Manager/…
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Medium 4.3
Codezips Online Shopping Portal insert-product.php unrestricted upload
A vulnerability classified as problematic was found in Codezips Online Shopping Portal 1.0. Affected by this vulnerability is an unknown functionality of the file insert-product.php. The manipulation of the argument productimage1/productimage2/productimage3 l…
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Medium 6.3
itsourcecode Online Bookstore admin_add.php unrestricted upload
A vulnerability was found in itsourcecode Online Bookstore 1.0. It has been rated as critical. This issue affects some unknown processing of the file admin_add.php. The manipulation of the argument image leads to unrestricted upload. The attack may be initiat…
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Critical 9.8
GDidees CMS <= v3.9.1 has a file upload vulnerability.
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Critical 9.8
An arbitrary file upload vulnerability in the Media Manager function of Closed-Loop Technology CLESS Server v4.5.2 allo…
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Critical 9.8CVE-2024-46377 Public exploit
Best House Rental Management System 1.0 contains an arbitrary file upload vulnerability in the save_settings() function…
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High 8.8
Dedecms V5.7.115 contains an arbitrary code execution via file upload vulnerability in the backend.
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High 8.3
Remote command execution through file upload in contao/core-bundle
Contao is an Open Source CMS. In affected versions a back end user with access to the file manager can upload malicious files and execute them on the server. Users are advised to update to Contao 4.13.49, 5.3.15 or 5.4.3. Users unable to update are advised to…
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Medium 4.3
MStore API – Create Native Android & iOS Apps On The Cloud <= 4.15.3 - Authenticated (Subscriber+) Limited Arbitrary File Upload
The MStore API – Create Native Android & iOS Apps On The Cloud plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the update_user_profile() function in all versions up to, and including, 4.15.3. This makes it p…
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Critical 10.0
Remote Code Execution through File Upload in SOPlanning before 1.52.02
A unauthenticated Remote Code Execution (RCE) vulnerability is found in the SO Planning online planning tool. With this vulnerability, an attacker can upload executable files that are moved to a publicly accessible folder before verifying any requirements. Th…
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High 7.5
iniNet Solutions SpiderControl SCADA Web Server Unrestricted Upload of File with Dangerous Type
SpiderControl SCADA Web Server has a vulnerability that could allow an attacker to upload specially crafted malicious files without authentication.
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High 8.8
Bit File Manager – 100% Free & Open Source File Manager and Code Editor for WordPress <= 6.5.5 - Authenticated (Subscriber+) Arbitrary File Upload
The Bit File Manager – 100% Free & Open Source File Manager and Code Editor for WordPress 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, 6.5.5. Th…
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High 7.2
An arbitrary file upload vulnerability in the component /admin/index.php of moziloCMS v3.0 allows attackers to execute …
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Critical 9.8
Qualitor up to 8.24 is vulnerable to Remote Code Execution (RCE) via Arbitrary File Upload in checkAcesso.php.
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Medium 6.6
Customizer Export/Import <= 0.9.7 - Authenticated (Admin+) Arbitrary File Upload via Customization Settings Import
The Customizer Export/Import plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the '_import' function in all versions up to, and including, 0.9.7. This makes it possible for authenticated attackers, with Admin…
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Critical 9.9
File upload restriction bypass vulnerability in Job Portal
File upload restriction bypass vulnerability in PHPGurukul Job Portal 1.0, the exploitation of which could allow an authenticated user to execute an RCE via webshell.
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High 8.8
An issue was discovered in za-internet C-MOR Video Surveillance 5.2401. Due to improper user input validation, it is po…
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Critical 9.9
IBM webMethods Integration code execution
IBM webMethods Integration 10.15 could allow an authenticated user to upload and execute arbitrary files which could be executed on the underlying operating system.
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High 8.1
MCMS v5.4.1 has front-end file upload vulnerability which can lead to remote command execution.
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Medium 6.3
SourceCodester Petshop Management System add_client.php unrestricted upload
A vulnerability, which was classified as critical, has been found in SourceCodester Petshop Management System 1.0. This issue affects some unknown processing of the file /controllers/add_client.php. The manipulation of the argument image_profile leads to unre…
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Medium 6.3
SourceCodester Petshop Management System add_user.php unrestricted upload
A vulnerability classified as critical was found in SourceCodester Petshop Management System 1.0. This vulnerability affects unknown code of the file /controllers/add_user.php. The manipulation of the argument avatar leads to unrestricted upload. The attack c…
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Medium 6.3
HFO4 shudong-share File Extension fileReceive.php unrestricted upload
A vulnerability was found in HFO4 shudong-share 2.4.7. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the file /includes/fileReceive.php of the component File Extension Handler. The manipulation of the argument…
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High 8.8
Gether Technology 6SHR System - Unrestricted File Upload
6SHR system from Gether Technology does not properly validate uploaded file types, allowing remote attackers with regular privileges to upload web shell scripts and use them to execute arbitrary system commands on the server.
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Medium 6.3
FeehiCMS index.php insert unrestricted upload
A vulnerability was found in FeehiCMS up to 2.1.1 and classified as critical. This issue affects the function insert of the file /admin/index.php?r=user%2Fcreate. The manipulation of the argument User[avatar] leads to unrestricted upload. The attack may be in…
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Medium 6.3
FeehiCMS index.php createBanner unrestricted upload
A vulnerability has been found in FeehiCMS up to 2.1.1 and classified as critical. This vulnerability affects the function createBanner of the file /admin/index.php?r=banner%2Fbanner-create. The manipulation of the argument BannerForm[img] leads to unrestrict…
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Medium 6.3
FeehiCMS index.php update unrestricted upload
A vulnerability, which was classified as critical, was found in FeehiCMS up to 2.1.1. This affects the function update of the file /admin/index.php?r=friendly-link%2Fupdate. The manipulation of the argument FriendlyLink[image] leads to unrestricted upload. It…
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High 7.2
Funnelforms Free <= 3.7.3.2 - Authenticated (Administrator+) Arbitrary File Upload
The Funnelforms Free plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'af2_add_font' function in all versions up to, and including, 3.7.3.2. This makes it possible for authenticated attackers, with admini…