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 8.8
IMGspider <= 2.3.10 - Authenticated (Contributor+) Arbitrary File Upload via 'upload_img_file'
The IMGspider plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'upload_img_file' function in all versions up to, and including, 2.3.10. This makes it possible for authenticated attackers, with contributor…
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High 7.8
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High 7.2
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High 7.3
itsourcecode Online Food Ordering System addproduct.php unrestricted upload
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High 8.8
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High 8.9
Bludit - Remote Code Execution (RCE) through Image API
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High 8.9
Bludit - Remote Code Execution (RCE) through File API
A security vulnerability has been identified in Bludit, allowing attackers with knowledge of the API token to upload arbitrary files through the File API which leads to arbitrary code execution on the server. This vulnerability arises from improper handling o…
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High 7.4
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High 8.8
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High 8.8CVE-2024-6132 Public exploit
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The Pexels: Free Stock Photos plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'pexels_fsp_images_options_validate' function in all versions up to, and including, 1.2.2. This makes it possible for authent…
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High 8.8
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High 7.3
itsourcecode Simple Online Hotel Reservation System edit_room.php unrestricted upload
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High 7.3
itsourcecode Simple Online Hotel Reservation System add_room.php unrestricted upload
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High 7.3
itsourcecode Monbela Tourist Inn Online Reservation System controller.php unrestricted upload
A vulnerability classified as critical has been found in itsourcecode Monbela Tourist Inn Online Reservation System up to 1.0. Affected is an unknown function of the file controller.php. The manipulation of the argument image leads to unrestricted upload. It …
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High 7.3
itsourcecode Magbanua Beach Resort Online Reservation System controller.php unrestricted upload
A vulnerability was found in itsourcecode Magbanua Beach Resort Online Reservation System up to 1.0. It has been rated as critical. Affected by this issue is some unknown functionality of the file controller.php. The manipulation of the argument image leads t…
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High 7.3
itsourcecode Pool of Bethesda Online Reservation System uploadImage unrestricted upload
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High 8.8
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High 7.2
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High 8.8
Verint - CWE-434: Unrestricted Upload of File with Dangerous Type
Verint - CWE-434: Unrestricted Upload of File with Dangerous Type
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High 7.2
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Adobe Commerce versions 2.4.7, 2.4.6-p5, 2.4.5-p7, 2.4.4-p8 and earlier are affected by an Unrestricted Upload of File with Dangerous Type vulnerability that could result in arbitrary code execution. A high-privilege attacker could exploit this vulnerability …
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High 8.8
TYPO3 Arbitrary Code Execution via File List Module
Due to missing file extensions in $GLOBALS['TYPO3_CONF_VARS']['BE'][‘fileDenyPattern’], backend users are allowed to upload *.phar, *.shtml, *.pl or *.cgi files which can be executed in certain web server setups. A valid backend user account is needed in orde…
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High 7.3
itsourcecode Bakery Online Ordering System unrestricted upload
A vulnerability was found in itsourcecode Bakery Online Ordering System 1.0. It has been classified as critical. Affected is an unknown function of the file /admin/modules/product/controller.php?action=add. The manipulation of the argument image leads to unre…
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High 8.0CVE-2024-36774 Public exploit
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High 7.2CVE-2024-29848 EPSS 64%
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High 8.7
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High 8.8
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High 8.8
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High 8.8
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High 7.3
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A vulnerability was found in SourceCodester Vehicle Management System 1.0. It has been classified as critical. This affects an unknown part of the file /newvehicle.php. The manipulation of the argument file leads to unrestricted upload. It is possible to init…
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High 8.8CVE-2024-5247 EPSS 27%
NETGEAR ProSAFE Network Management System UpLoadServlet Unrestricted File Upload Remote Code Execution Vulnerability
NETGEAR ProSAFE Network Management System UpLoadServlet Unrestricted File Upload Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of NETGEAR ProSAFE Network Management System. …
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High 7.3
SourceCodester Student Management System controller.php unrestricted upload
A vulnerability classified as critical has been found in SourceCodester Student Management System 1.0. Affected is an unknown function of the file /student/controller.php. The manipulation of the argument photo leads to unrestricted upload. It is possible to …
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High 8.2
WordPress XStore Core plugin <= 5.3.8 - Limited Arbitrary File Upload vulnerability
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High 7.3
SourceCodester SchoolWebTech home.php unrestricted upload
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High 7.3
SourceCodester Simple Online Bidding System unrestricted upload
A vulnerability was found in SourceCodester Simple Online Bidding System 1.0. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the file /simple-online-bidding-system/admin/ajax.php?action=save_product. The manipu…
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High 7.3
SourceCodester Online Discussion Forum Site registerH.php unrestricted upload
A vulnerability was found in SourceCodester Online Discussion Forum Site 1.0. It has been rated as critical. This issue affects some unknown processing of the file registerH.php. The manipulation of the argument ima leads to unrestricted upload. The attack ma…
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High 7.8
Remote Code Execution vulnerability in the iManager
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High 8.8
LearnPress – WordPress LMS Plugin <= 4.2.6.5 - Authenticated (Instructor+) Arbitrary File Upload
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