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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Critical 9.8
Unrestricted upload of file with dangerous type exists in MicroEngine Mailform version 1.1.0 to 1.1.8. If the product's…
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Critical 9.8CVE-2023-31689 EPSS 20%
In Wcms 0.3.2, an attacker can send a crafted request from a vulnerable web application backend server /wcms/wex/html.p…
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Critical 9.8
Malicious File Upload vulnerability in "Rental Module" developed by third-party for Ideasoft's E-commerce Platform.
Unrestricted Upload of File with Dangerous Type vulnerability in "Rental Module" developed by third-party for Ideasoft's E-commerce Platform allows Command Injection, Using Malicious Files, Upload a Web Shell to a Web Server. This issue affects Rental Module:…
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Critical 9.8
An arbitrary file upload vulnerability in the component /admin/ThemeController.java of PerfreeBlog v3.1.2 allows attack…
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Medium 6.3
code-projects Simple Photo Gallery unrestricted upload
A vulnerability was found in code-projects Simple Photo Gallery 1.0. It has been declared as critical. This vulnerability affects unknown code. The manipulation leads to unrestricted upload. The attack can be initiated remotely. VDB-229282 is the identifier a…
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Critical 9.8
GuppY CMS 6.00.10 is vulnerable to Unrestricted File Upload which allows remote attackers to execute arbitrary code by …
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Medium 6.3
Tongda OA GatewayController.php actionGetdata unrestricted upload
A vulnerability classified as critical has been found in Tongda OA 11.10. This affects the function actionGetdata of the file GatewayController.php. The manipulation leads to unrestricted upload. It is possible to initiate the attack remotely. The exploit has…
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High 8.8
An arbitrary file upload vulnerability in Serendipity 2.4-beta1 allows attackers to execute arbitrary code via a crafte…
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Critical 9.8
Sourcecodester Online Computer and Laptop Store 1.0 allows unrestricted file upload and can lead to remote code executi…
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High 8.8
eXtplorer 2.1.15 is vulnerable to Insecure Permissions. File upload in file manager allows uploading zip file containin…
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Critical 9.8
File Upload vulnerability found in Oretnom23 Storage Unit Rental Management System v.1.0 allows a remote attacker to ex…
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Medium 6.3
Weaver E-Office uploadify.php unrestricted upload
A vulnerability was found in Weaver E-Office 9.5. It has been classified as critical. This affects an unknown part of the file /inc/jquery/uploadify/uploadify.php. The manipulation of the argument Filedata leads to unrestricted upload. It is possible to initi…
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High 8.8
File Upload vulnerability in PHPOK 5.7.140 allows remote attackers to run arbitrary code and gain escalated privileges …
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High 8.8CVE-2023-29930 Public exploit
An issue was found in Genesys CIC Polycom phone provisioning TFTP Server all version allows a remote attacker to execut…
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High 7.2
An unrestricted upload of file with dangerous type vulnerability exists in Avalanche versions 6.3.x and below that coul…
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High 8.8
MCMS vulnerable to arbitrary code execution via crafted thumbnail
File upload vulnerability in MCMS 5.0 allows attackers to execute arbitrary code via a crafted thumbnail. A different vulnerability than CVE-2022-31943.
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High 8.8
AgilePoint NX v8.0 SU2.2 & SU2.3 – Insecure File Upload
AgilePoint NX v8.0 SU2.2 & SU2.3 – Insecure File Upload - Vulnerability allows insecure file upload, by an unspecified request.
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Critical 9.8CVE-2023-30185 Public exploit
CRMEB v4.4 to v4.6 was discovered to contain an arbitrary file upload vulnerability via the component \attachment\Syste…
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High 7.2
File upload vulnerability in CMS Made Simple through 2.2.15 allows remote authenticated attackers to gain a webshell vi…
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High 7.8
OS Command injection vulnerability in mblog 3.5.0 allows attackers to execute arbitrary code via crafted theme when it …
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Critical 9.8
An arbitrary file upload vulnerability in the component /admin/ajax.php?action=save_menu of Online Food Ordering System…
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Critical 9.8
Semcms Shop v4.2 was discovered to contain an arbitrary file uplaod vulnerability via the component SEMCMS_Upfile.php. …
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High 7.3
Weaver E-Office unrestricted upload
A vulnerability was found in Weaver E-Office 9.5. It has been rated as critical. Affected by this issue is some unknown functionality of the file App/Ajax/ajax.php?action=mobile_upload_save. The manipulation of the argument upload_quwan leads to unrestricted …
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Critical 9.8
CLTPHP <=6.0 is vulnerable to Unrestricted Upload of File with Dangerous Type via application/admin/controller/Template…
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High 7.2
Zyrex Popup <= 1.0 - Admin+ Arbitrary File Upload
The ZYREX POPUP WordPress plugin through 1.0 does not validate the type of files uploaded when creating a popup, allowing a high privileged user (such as an Administrator) to upload arbitrary files, even when modifying the file system is disallowed, such as i…
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Critical 9.1
Incorrect input validation for the default-storage-path in the settings page in Jedox 2020.2.5 allows remote, authentic…
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Critical 9.8
Apache StreamPark (incubating): Upload any file to any directory
Streampark allows any users to upload a jar as application, but there is no mandatory verification of the uploaded file type, causing users to upload some high-risk files, and may upload them to any directory, Users of the affected versions should upgrade to …
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Critical 9.8
File upload vulnerability in Antabot White-Jotter v0.2.2, allows remote attackers to execute malicious code via the fil…
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Medium 6.3
DedeCMS config.php UpDateMemberModCache unrestricted upload
A vulnerability was found in DedeCMS 5.7.106 and classified as critical. Affected by this issue is the function UpDateMemberModCache of the file uploads/dede/config.php. The manipulation leads to unrestricted upload. The attack may be launched remotely. The e…
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Medium 4.7
Zhong Bang CRMEB SystemAttachmentServices.php videoUpload unrestricted upload
A vulnerability was found in Zhong Bang CRMEB 4.6.0. It has been declared as critical. This vulnerability affects the function videoUpload of the file \crmeb\app\services\system\attachment\SystemAttachmentServices.php. The manipulation of the argument filenam…
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High 8.8
An arbitrary file upload vulnerability in the plugin upload function of Textpattern v4.8.8 allows attackers to execute …
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Critical 9.8
TIBCO Spotfire Statistics Services Unrestricted File Upload Vulnerability
The Splus Server component of TIBCO Software Inc.'s TIBCO Spotfire Statistics Services contains a vulnerability that allows an unauthenticated remote attacker to upload or modify arbitrary files within the web server directory on the affected system. Affected…
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High 8.8
CLTPHP <=6.0 is vulnerable to Unrestricted Upload of File with Dangerous Type.
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High 7.2
Drupal core arbitrary PHP code execution
Drupal core sanitizes filenames with dangerous extensions upon upload (reference: SA-CORE-2020-012) and strips leading and trailing dots from filenames to prevent uploading server configuration files (reference: SA-CORE-2019-010). However, the protections for…
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High 8.2
An issue was discovered in the Open Document feature in Telindus Apsal 3.14.2022.235 b. An attacker may upload a crafte…
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High 8.1
Kiwi TCMS unrestricted file upload vulnerability
Kiwi TCMS, an open source test management system, allows users to upload attachments to test plans, test cases, etc. In versions of Kiwi TCMS prior to 12.2, there is no control over what kinds of files can be uploaded. Thus, a malicious actor may upload an `.…
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High 7.2
Improper Input Validation in Meinberg LTOS
In Meinbergs LTOS versions prior to V7.06.013, the configuration file upload function would not correctly validate the input, which would allow an remote authenticated attacker with high privileges to execute arbitrary commands.
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Critical 9.1
Unrestricted upload of file with dangerous type vulnerability in CyberPower PowerPanel Business
Unrestricted upload of file with dangerous type vulnerability in default.cmd file in PowerPanel Business Local/Remote for Windows v4.8.6 and earlier, PowerPanel Business Management for Windows v4.8.6 and earlier, PowerPanel Business Local/Remote for Linux 32b…
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Medium 6.3CVE-2023-2246 Public exploit
SourceCodester Online Pizza Ordering System unrestricted upload
A vulnerability has been found in SourceCodester Online Pizza Ordering System 1.0 and classified as critical. This vulnerability affects unknown code of the file admin/ajax.php?action=save_settings. The manipulation of the argument img leads to unrestricted u…
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Medium 6.3CVE-2023-2245 Public exploit
hansunCMS unrestricted upload
A vulnerability was found in hansunCMS 1.4.3. It has been declared as critical. This vulnerability affects unknown code of the file /ueditor/net/controller.ashx?action=catchimage. The manipulation leads to unrestricted upload. The attack can be initiated remo…