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
In Zoo Management System v1.0, there is an arbitrary file upload vulnerability in the picture upload point of the "gall…
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High 7.2
Garage Management System v1.0 is vulnerable to Arbitrary code execution via ip/garage/php_action/editProductImage.php?i…
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High 7.2
WordPress Uploading SVG, WEBP and ICO files plugin <= 1.0.1 - Authenticated Arbitrary File Upload vulnerability
Authenticated Arbitrary File Upload vulnerability in dmitrylitvinov Uploading SVG, WEBP and ICO files plugin <= 1.0.1 at WordPress.
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High 7.3
jeecg-boot unrestricted upload
A vulnerability was found in jeecg-boot. It has been declared as critical. This vulnerability affects unknown code of the file /api/. The manipulation of the argument file leads to unrestricted upload. The attack can be initiated remotely. The exploit has bee…
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High 7.2
WordPress Enable SVG, WebP & ICO Upload plugin <= 1.0.1 - Authenticated Arbitrary File Upload vulnerability
Authenticated (author or higher user role) Arbitrary File Upload vulnerability in ideasToCode Enable SVG, WebP & ICO Upload plugin <= 1.0.1 at WordPress.
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High 8.8
Feehi CMS arbitrary code execution via crafted PHP file
An arbitrary file upload vulnerability in the Advertising Management module of Feehi CMS v2.1.1 allows attackers to execute arbitrary code via a crafted PHP file.
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High 7.2
OpenTeknik LLC OSSN OPEN SOURCE SOCIAL NETWORK v6.3 LTS was discovered to contain an arbitrary file upload vulnerabilit…
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High 7.2
Import any XML or CSV File to WordPress <= 3.6.7 - Admin+ Malicious File Upload
The plugin WP All Import is vulnerable to arbitrary file uploads due to missing file type validation via the wp_all_import_get_gz.php file in versions up to, and including, 3.6.7. This makes it possible for authenticated attackers, with administrator level pe…
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High 8.0
URVE Web Manager uploader.php unrestricted upload
A vulnerability was found in URVE Web Manager. It has been rated as critical. This issue affects some unknown processing of the file _internal/uploader.php. The manipulation leads to unrestricted upload. The attack needs to be approached within the local netw…
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High 8.0CVE-2022-2419 EPSS 13%
URVE Web Manager upload.php unrestricted upload
A vulnerability was found in URVE Web Manager. It has been declared as critical. This vulnerability affects unknown code of the file _internal/collector/upload.php. The manipulation leads to unrestricted upload. Access to the local network is required for thi…
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High 8.0
URVE Web Manager img_upload.php unrestricted upload
A vulnerability was found in URVE Web Manager. It has been classified as critical. This affects an unknown part of the file kreator.html5/img_upload.php. The manipulation leads to unrestricted upload. Access to the local network is required for this attack. T…
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High 7.6
Insufficient content-type validation for uploaded files in open-forms
Open Forms is an application for creating and publishing smart forms. Open Forms supports file uploads as one of the form field types. These fields can be configured to allow only certain file extensions to be uploaded by end users (e.g. only PDF / Excel / ..…
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High 7.8
Arbitrary command execution in Minidoc
An arbitrary file upload vulnerability in Mindoc v2.1-beta.5 allows attackers to execute arbitrary commands via a crafted Zip file.
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High 7.2
Arbitrary file upload in ShopXO
An issue was discovered in ShopXO CMS 2.2.0. After entering the management page, there is an arbitrary file upload vulnerability in three locations.
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High 7.5
Sandbox bypass vulnerability through implicitly allowlisted platform Groovy files in Jenkins Pipeline: Groovy Plugin
Jenkins Pipeline: Groovy Plugin 2689.v434009a_31b_f1 and earlier allows loading any Groovy source files on the classpath of Jenkins and Jenkins plugins in sandboxed pipelines.
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High 7.8
Connect-Multiparty allows arbitrary file upload
An arbitrary file upload vulnerability in the file upload module of Express Connect-Multiparty 2.2.0 allows attackers to execute arbitrary code via a crafted PDF file. NOTE: the Supplier has not verified this vulnerability report.
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High 7.5
mySCADA myPRO Unrestricted Upload of File with Dangerous Type
mySCADA myPRO versions prior to 8.20.0 allows an unauthenticated remote attacker to upload arbitrary files to the file system.
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High 8.2
HCL Sametime is susceptible a file transfer service vulnerability
User SID can be modified resulting in an Arbitrary File Upload or deletion of directories causing a Denial of Service. When interacting in a normal matter with the Sametime chat application, users hold a cookie containing their session ID (SID). This value is…
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High 8.8
WordPress Rara One Click Demo Import plugin <= 1.2.9 - Cross-Site Request Forgery (CSRF) leads to Arbitrary File Upload vulnerability
Cross-Site Request Forgery (CSRF) leading to Arbitrary File Upload vulnerability in Rara One Click Demo Import plugin <= 1.2.9 on WordPress allows attackers to trick logged-in admin users into uploading dangerous files into /wp-content/uploads/ directory.
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High 8.1
MaxBoard XSS and File Upload Vulnerability
Insufficient script validation of the admin page enables XSS, which causes unauthorized users to steal admin privileges. When uploading file in a specific menu, the verification of the files is insufficient. It allows remote attackers to upload arbitrary file…
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High 8.8
Fancy Product Designer <= 4.7.5 - Cross-Site Request Forgery to Arbitrary File Upload
The Fancy Product Designer plugin for WordPress is vulnerable to Cross-Site Request Forgery via the FPD_Admin_Import class that makes it possible for attackers to upload malicious files that could be used to gain webshell access to a server in versions up to,…
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High 8.8
Elementor Website Builder 3.6.0 - 3.6.2 - Missing Authorization to Remote Code Execution
The Elementor Website Builder plugin for WordPress is vulnerable to unauthorized execution of several AJAX actions due to a missing capability check in the ~/core/app/modules/onboarding/module.php file that make it possible for attackers to modify site data i…
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High 7.5
Express-FileUpload Arbitrary File Overwrite
An arbitrary file write vulnerability in Express-FileUpload v1.3.1 allows attackers to upload multiple files with the same name, causing an overwrite of files in the web application server.
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High 7.5
MDT AutoSave Unrestricted Upload of File with Dangerous Type
A getfile function in MDT AutoSave versions prior to v6.02.06 enables a user to supply an optional parameter, resulting in the processing of a request in a special manner. This can result in the execution of an unzip command and place a malicious .exe file in…
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High 7.2
Dell Wyse Management Suite versions 2.0 through 3.5.2 contain an unrestricted file upload vulnerability. A malicious us…
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High 8.8
Unrestricted Upload of File with Dangerous Type in WPanel 4
Multiple Remote Code Execution (RCE) vulnerabilities exist in WPanel 4 4.3.1 and below via a malicious PHP file upload to (1) Dashboard's Avatar image, (2) Posts Folder image, (3) Pages Folder image and (4) Gallery Folder image.
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High 8.8CVE-2021-40905 Public exploit
The web management console of CheckMK Enterprise Edition (versions 1.5.0 to 2.0.0p9) does not properly sanitise the upl…
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High 7.2
Unrestricted Upload of File with Dangerous Type in crater-invoice/crater
Unrestricted Upload of File with Dangerous Type in GitHub repository crater-invoice/crater prior to 6.0.6.
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High 8.2
File Upload Restriction Bypass leading to Stored XSS Vulnerability in star7th/showdoc
File Upload Restriction Bypass leading to Stored XSS Vulnerability in GitHub repository star7th/showdoc prior to 2.10.4.
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High 8.0
File upload filter bypass leading to stored XSS in microweber/microweber
File upload filter bypass leading to stored XSS in GitHub repository microweber/microweber prior to 1.2.12.
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High 7.2
Abusing Backup/Restore feature to achieve Remote Code Execution in microweber/microweber
Abusing Backup/Restore feature to achieve Remote Code Execution in GitHub repository microweber/microweber prior to 1.2.12.
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High 8.8CVE-2021-44673 Public exploit
Unrestricted Upload of File with Dangerous Type in Croogo
A Remote Code Execution (RCE) vulnerability exists in Croogo 3.0.2via admin/file-manager/attachments, which lets a malicoius user upload a web shell script.
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High 7.2CVE-2022-26149 Public exploit
Unrestricted Upload of File with Dangerous Type in MODX Revolution
MODX Revolution through 2.8.3-pl allows remote authenticated administrators to execute arbitrary code by uploading an executable file, because the Uploadable File Types setting can be changed by an administrator.
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High 7.2
File upload restriction bypass in Zenario CMS
Zenario CMS 9.2 allows an authenticated admin user to bypass the file upload restriction by creating a new 'File/MIME Types' using the '.phar' extension. Then an attacker can upload a malicious file, intercept the request and change the extension to '.phar' i…
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High 7.2
Unrestricted Upload of File with Dangerous Type in star7th/showdoc
Unrestricted Upload of File with Dangerous Type in Packagist showdoc/showdoc prior to 2.10.2.
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High 8.1
Unrestricted Upload of File with Dangerous Type in jsdecena/laracom
Unrestricted Upload of File with Dangerous Type in Packagist jsdecena/laracom prior to v2.0.9.
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High 7.2CVE-2021-44255 Public exploit
Unrestricted Upload of File with Dangerous Type in motionEye
Authenticated remote code execution in MotionEye <= 0.42.1 and MotioneEyeOS <= 20200606 allows a remote attacker to upload a configuration backup file containing a malicious python pickle file which will execute arbitrary code on the server.
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High 7.2
Unrestricted Upload of File with Dangerous Type in crater-invoice/crater
Unrestricted Upload of File with Dangerous Type in GitHub repository crater-invoice/crater prior to 6.0.
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High 8.8
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Commvault CommCell 11…
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High 8.8CVE-2021-34995 EPSS 69%
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Commvault CommCell 11…