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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High 8.1CVE-2023-46694 Public exploit
Vtenext 21.02 allows an authenticated attacker to upload arbitrary files, potentially enabling them to execute remote c…
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High 8.8
silverstripe/framework allows upload of dangerous file types
Some potentially dangerous file types exist in File.allowed_extensions which could allow a malicious CMS user to upload files that then get executed in the security context of the website. We have removed the ability to upload .css, .js, .potm, .dotm, .xltm a…
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High 7.3
SourceCodester Vehicle Management System newvehicle.php unrestricted upload
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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Medium 5.5
An arbitrary file upload vulnerability in the File preview function of Raingad IM v4.1.4 allows attackers to execute ar…
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Medium 6.4
Custom Fonts – Host Your Fonts Locally <= 2.1.4 - Authenticated (Author+) Stored Cross-Site Scripting
The Custom Fonts – Host Your Fonts Locally plugin for WordPress is vulnerable to Stored Cross-Site Scripting via svg file upload in all versions up to, and including, 2.1.4 due to insufficient input sanitization and output escaping. This makes it possible for…
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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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Critical 9.8
There is an arbitrary file upload vulnerability on the media add .php page in the backend of the website in version 5.7…
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Critical 9.8
An arbitrary file upload vulnerability in the uploadAudio method of inxedu v2024.4 allows attackers to execute arbitrar…
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Critical 9.8
An arbitrary file upload vulnerability in the gok4 method of inxedu v2024.4 allows attackers to execute arbitrary code …
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Critical 9.8
An arbitrary file upload vulnerability in the component \controller\ImageUploadController.class of inxedu v2.0.6 allows…
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Critical 9.8
Hash Form – Drag & Drop Form Builder <= 1.1.0 - Unauthenticated Arbitrary File Upload to Remote Code Execution
The Hash Form – Drag & Drop Form Builder plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'file_upload_action' function in all versions up to, and including, 1.1.0. This makes it possible for unauthentica…
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Medium 6.3
SourceCodester Vehicle Management System HTTP POST Request newdriver.php unrestricted upload
A vulnerability was found in SourceCodester Vehicle Management System up to 1.0 and classified as critical. This issue affects some unknown processing of the file /newdriver.php of the component HTTP POST Request Handler. The manipulation of the argument file…
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Medium 6.3
Wangshen SecGate 3600 ?g=log_import_save unrestricted upload
A vulnerability, which was classified as critical, was found in Wangshen SecGate 3600 up to 20240516. This affects an unknown part of the file /?g=log_import_save. The manipulation of the argument reqfile leads to unrestricted upload. It is possible to initia…
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Medium 6.3
Codezips E-Commerce Site editproduct.php unrestricted upload
A vulnerability, which was classified as critical, has been found in Codezips E-Commerce Site 1.0. Affected by this issue is some unknown functionality of the file admin/editproduct.php. The manipulation of the argument profilepic leads to unrestricted upload…
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Critical 9.8CVE-2024-34982 Scanner template
An arbitrary file upload vulnerability in the component /include/file.php of lylme_spage v1.9.5 allows attackers to exe…
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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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Medium 4.7
Emlog Pro setting.php unrestricted upload
A vulnerability was found in Emlog Pro 2.3.4 and classified as critical. Affected by this issue is some unknown functionality of the file admin/setting.php. The manipulation leads to unrestricted upload. The attack may be launched remotely. The exploit has be…
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Critical 10.0
WordPress ActiveDEMAND plugin <= 0.2.41 - Arbitrary File Upload vulnerability
Unrestricted Upload of File with Dangerous Type vulnerability in JumpDEMAND Inc. ActiveDEMAND allows Using Malicious Files.This issue affects ActiveDEMAND: from n/a through 0.2.41.
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Critical 9.1
WordPress JS Help Desk – Best Help Desk & Support Plugin plugin <= 2.7.7 - Arbitrary File Upload vulnerability
Unrestricted Upload of File with Dangerous Type vulnerability in JS Help Desk JS Help Desk – Best Help Desk & Support Plugin allows Using Malicious Files.This issue affects JS Help Desk – Best Help Desk & Support Plugin: from n/a through 2.7.7.
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Critical 10.0CVE-2024-31351 Public exploit
WordPress Copymatic plugin <= 1.6 - Unauthenticated Arbitrary File Upload vulnerability
Unrestricted Upload of File with Dangerous Type vulnerability in Copymatic Copymatic – AI Content Writer & Generator.This issue affects Copymatic – AI Content Writer & Generator: from n/a through 1.6.
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High 8.2
WordPress XStore Core plugin <= 5.3.8 - Limited Arbitrary File Upload vulnerability
Unrestricted Upload of File with Dangerous Type vulnerability in 8theme XStore Core.This issue affects XStore Core: from n/a through 5.3.8.
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High 7.3
SourceCodester SchoolWebTech home.php unrestricted upload
A vulnerability was found in SourceCodester SchoolWebTech 1.0. It has been classified as critical. Affected is an unknown function of the file /improve/home.php. The manipulation of the argument image leads to unrestricted upload. It is possible to launch the…
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Medium 6.3
D-Link DAR-7000-40 urlblist.php unrestricted upload
** UNSUPPORTED WHEN ASSIGNED ** A vulnerability has been found in D-Link DAR-7000-40 V31R02B1413C and classified as critical. This vulnerability affects unknown code of the file /firewall/urlblist.php. The manipulation of the argument file leads to unrestrict…
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Medium 6.3
D-Link DAR-7000-40 url.php unrestricted upload
** UNSUPPORTED WHEN ASSIGNED ** A vulnerability, which was classified as critical, was found in D-Link DAR-7000-40 V31R02B1413C. This affects an unknown part of the file /url/url.php. The manipulation of the argument file_upload leads to unrestricted upload. …
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Medium 6.3
D-Link DAR-7000-40 resmanage.php unrestricted upload
** UNSUPPORTED WHEN ASSIGNED ** A vulnerability, which was classified as critical, has been found in D-Link DAR-7000-40 V31R02B1413C. Affected by this issue is some unknown functionality of the file /useratte/resmanage.php. The manipulation of the argument fi…
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Medium 6.3
D-Link DAR-7000-40 onlineuser.php unrestricted upload
** UNSUPPORTED WHEN ASSIGNED ** A vulnerability classified as critical was found in D-Link DAR-7000-40 V31R02B1413C. Affected by this vulnerability is an unknown functionality of the file /user/onlineuser.php. The manipulation of the argument file_upload lead…
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Medium 6.3
D-Link DAR-7000-40 licenseauthorization.php unrestricted upload
** UNSUPPORTED WHEN ASSIGNED ** A vulnerability classified as critical has been found in D-Link DAR-7000-40 V31R02B1413C. Affected is an unknown function of the file interface/sysmanage/licenseauthorization.php. The manipulation of the argument file_upload le…
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Medium 6.3
SourceCodester Online Art Gallery Management System adminHome.php unrestricted upload
A vulnerability was found in SourceCodester Online Art Gallery Management System 1.0. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the file admin/adminHome.php. The manipulation of the argument sliderpic lead…
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Medium 4.3
SourceCodester Best Courier Management System view_parcel.php unrestricted upload
A vulnerability was found in SourceCodester Best Courier Management System 1.0. It has been classified as problematic. Affected is an unknown function of the file view_parcel.php. The manipulation of the argument id leads to unrestricted upload. It is possibl…
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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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Medium 6.3
Codezips E-Commerce Site addproduct.php unrestricted upload
A vulnerability has been found in Codezips E-Commerce Site 1.0 and classified as critical. This vulnerability affects unknown code of the file admin/addproduct.php. The manipulation of the argument profilepic leads to unrestricted upload. The attack can be in…
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Medium 6.3
SourceCodester Employee and Visitor Gate Pass Logging System unrestricted upload
A vulnerability classified as critical has been found in SourceCodester Employee and Visitor Gate Pass Logging System 1.0. Affected is an unknown function of the file /employee_gatepass/classes/Users.php?f=ssave. The manipulation of the argument img leads to …
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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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Medium —
Drupal Malicious file upload with filenames stating with dot
Drupal 8 core's file_save_upload() function does not strip the leading and trailing dot ('.') from filenames, like Drupal 7 did. Users with the ability to upload files with any extension in conjunction with contributed modules may be able to use this to uploa…
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Medium 6.6
Drupal core unrestricted file upload
Drupal 8 core's file_save_upload() function does not strip the leading and trailing dot ('.') from filenames, like Drupal 7 did. Users with the ability to upload files with any extension in conjunction with contributed modules may be able to use this to uploa…
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Medium 6.3
Byzoro Smart S200 Management Platform userattestation.php unrestricted upload
A vulnerability was found in Byzoro Smart S200 Management Platform up to 20240507. It has been rated as critical. This issue affects some unknown processing of the file /useratte/userattestation.php. The manipulation of the argument web_img leads to unrestric…
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High 7.8
Remote Code Execution vulnerability in the iManager
Remote Code Execution has been discovered in OpenText™ iManager 3.2.6.0200. The vulnerability can trigger command injection and insecure deserialization issues.
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Critical 9.1
Git's recursive clones on case-insensitive filesystems that support symlinks are susceptible to Remote Code Execution
Git is a revision control system. Prior to versions 2.45.1, 2.44.1, 2.43.4, 2.42.2, 2.41.1, 2.40.2, and 2.39.4, repositories with submodules can be crafted in a way that exploits a bug in Git whereby it can be fooled into writing files not into the submodule'…
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Critical 9.6
File upload vulnerability in SAP NetWeaver Application Server ABAP and ABAP Platform
An unauthenticated attacker can upload a malicious file to the server which when accessed by a victim can allow an attacker to completely compromise system.
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Medium 5.7
NocoDB Allows Preview of File with Dangerous Content
NocoDB is software for building databases as spreadsheets. Starting in verson 0.202.6 and prior to version 0.202.10, an attacker can upload a html file with malicious content. If user tries to open that file in browser malicious scripts can be executed leadin…