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.
CVE-2021-4225 (GCVE-0-2021-4225)
Vulnerability from cvelistv5 – Published: 2022-04-25 15:50 – Updated: 2024-08-03 17:16
VLAI
Title
SP Project & Document Manager < 4.24 - Subscriber+ Shell Upload
Summary
The SP Project & Document Manager WordPress plugin before 4.24 allows any authenticated users, such as subscribers, to upload files. The plugin attempts to prevent PHP and other similar files that could be executed on the server from being uploaded by checking the file extension. It was discovered that on Windows servers, the security checks in place were insufficient, enabling bad actors to potentially upload backdoors on vulnerable sites.
Severity
No CVSS data available.
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://wpscan.com/vulnerability/bd1083d1-edcc-48… | x_refsource_MISC |
| https://github.com/pang0lin/CVEproject/blob/main/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Unknown | SP Project & Document Manager |
Affected:
4.24 , < 4.24
(custom)
|
Credits
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CVE-2021-42362 (GCVE-0-2021-42362)
Vulnerability from cvelistv5 – Published: 2021-11-17 17:44 – Updated: 2024-09-16 18:45
VLAI
Title
WordPress Popular Posts <= 5.3.2 Authenticated Arbitrary File Upload
Summary
The WordPress Popular Posts WordPress plugin is vulnerable to arbitrary file uploads due to insufficient input file type validation found in the ~/src/Image.php file which makes it possible for attackers with contributor level access and above to upload malicious files that can be used to obtain remote code execution, in versions up to and including 5.3.2.
Severity
8.8 (High)
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://blog.nintechnet.com/improper-input-valida… | x_refsource_MISC |
| https://www.wordfence.com/vulnerability-advisorie… | x_refsource_MISC |
| https://plugins.trac.wordpress.org/changeset/2542… | x_refsource_MISC |
| https://wpscan.com/vulnerability/bd4f157c-a3d7-45… | x_refsource_MISC |
| http://packetstormsecurity.com/files/165376/WordP… | x_refsource_MISC |
| https://github.com/cabrerahector/wordpress-popula… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| WordPress Popular Posts | WordPress Popular Posts |
Affected:
0.0 , ≤ 5.3.2
(custom)
|
Date Public
2021-11-12 05:00
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CVE-2021-42839 (GCVE-0-2021-42839)
Vulnerability from cvelistv5 – Published: 2021-11-15 09:30 – Updated: 2024-09-17 04:09
VLAI
Title
Grand Vice info Co. webopac7 - Arbitrary File Upload
Summary
Grand Vice info Co. webopac7 file upload function fails to filter special characters. While logging in with general user’s permission, remote attackers can upload malicious script and execute arbitrary code to control the system or interrupt services.
Severity
8.8 (High)
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.twcert.org.tw/tw/cp-132-5288-9d546-1.html | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Grand Vice info Co. | webopac7 |
Affected:
7.1.20160701
Affected: 1.8.20160701 |
Date Public
2021-11-15 00:00
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CVE-2021-4330 (GCVE-0-2021-4330)
Vulnerability from cvelistv5 – Published: 2023-03-07 13:51 – Updated: 2026-04-08 16:58
VLAI
Title
Envato Elements <= 2.0.10 & Template Kit <= 1.0.13 - Authenticated (Contributor+) Arbitrary File Upload
Summary
The Envato Elements & Download and Template Kit – Import plugins for WordPress are vulnerable to arbitrary file uploads due to insufficient validation of file type upon extracting uploaded Zip files in the installFreeTemplateKit and uploadTemplateKitZipFile functions. This makes it possible for attackers with contributor-lever permissions and above to upload arbitrary files and potentially gain remote code execution in versions up to and including 1.0.13 of Template Kit – Import and versions up to and including 2.0.10 of Envato Elements & Download.
Severity
8.8 (High)
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| envato | Template Kit – Import |
Affected:
0 , ≤ 1.0.13
(semver)
|
|
| envato | Envato Elements – Photos & Elementor Templates |
Affected:
0 , ≤ 2.0.10
(semver)
|
Credits
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CVE-2021-4354 (GCVE-0-2021-4354)
Vulnerability from cvelistv5 – Published: 2023-06-07 01:51 – Updated: 2026-04-08 16:56
VLAI
Title
PWA for WP & AMP <= 1.7.32 - Arbitrary File Upload
Summary
The PWA for WP & AMP for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the pwaforwp_splashscreen_uploader function in versions up to, and including, 1.7.32. This makes it possible for authenticated attackers to upload arbitrary files on the affected sites server which may make remote code execution possible.
Severity
8.8 (High)
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| magazine3 | PWA for WP – Progressive Web Apps Made Simple |
Affected:
0 , ≤ 1.7.32
(semver)
|
Credits
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CVE-2021-4382 (GCVE-0-2021-4382)
Vulnerability from cvelistv5 – Published: 2023-06-07 01:51 – Updated: 2026-04-08 17:33
VLAI
Title
Recently <= 3.0.4 - Arbitrary File Upload to Remote Code Exectution
Summary
The Recently plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the fetch_external_image() function in versions up to, and including, 3.0.4. This makes it possible for authenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.
Severity
8.8 (High)
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
Credits
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CVE-2021-43829 (GCVE-0-2021-43829)
Vulnerability from cvelistv5 – Published: 2021-12-14 19:25 – Updated: 2024-08-04 04:10
VLAI
Title
Unrestricted Upload of Files in Patrowl
Summary
PatrOwl is a free and open-source solution for orchestrating Security Operations. In versions prior to 1.7.7 PatrowlManager unrestrictly handle upload files in the findings import feature. This vulnerability is capable of uploading dangerous type of file to server leading to XSS attacks and potentially other forms of code injection. Users are advised to update to 1.7.7 as soon as possible. There are no known workarounds for this issue.
Severity
7.4 (High)
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/Patrowl/PatrowlManager/securit… | x_refsource_CONFIRM |
| https://github.com/Patrowl/PatrowlManager/commit/… | x_refsource_MISC |
| https://huntr.dev/bounties/17324785-f83a-4058-ac4… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Patrowl | PatrowlManager |
Affected:
< 1.7.7
|
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CVE-2021-43934 (GCVE-0-2021-43934)
Vulnerability from cvelistv5 – Published: 2022-04-28 14:54 – Updated: 2025-04-16 16:27
VLAI
Title
Elcomplus SmartPtt Unrestricted Upload of File with Dangerous Type
Summary
Elcomplus SmartPTT is vulnerable as the backup and restore system does not adequately validate upload requests, enabling a malicious user to potentially upload arbitrary files.
Severity
9.8 (Critical)
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.cisa.gov/uscert/ics/advisories/icsa-2… | x_refsource_CONFIRM |
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CVE-2021-44159 (GCVE-0-2021-44159)
Vulnerability from cvelistv5 – Published: 2021-12-20 03:10 – Updated: 2024-09-17 00:11
VLAI
Title
4MOSAn GCB Doctor - Unrestricted Upload of File
Summary
4MOSAn GCB Doctor’s file upload function has improper user privilege control. A remote attacker can upload arbitrary files including webshell files without authentication and execute arbitrary code in order to perform arbitrary system operations or deny of service attack.
Severity
9.8 (Critical)
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.twcert.org.tw/tw/cp-132-5395-eee40-1.html | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| 4MOSAn | GCB Doctor |
Affected:
unspecified , ≤ 20210811(2.0)
(custom)
|
Date Public
2021-12-17 00:00
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CVE-2021-44164 (GCVE-0-2021-44164)
Vulnerability from cvelistv5 – Published: 2021-12-20 03:10 – Updated: 2024-09-16 18:59
VLAI
Title
Chain Sea Information Integration Co., Ltd ai chatbot system - Arbitrary File Upload
Summary
Chain Sea ai chatbot system’s file upload function has insufficient filtering for special characters in URLs, which allows a remote attacker to by-pass file type validation, upload malicious script and execute arbitrary code without authentication, in order to take control of the system or terminate service.
Severity
9.8 (Critical)
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.twcert.org.tw/tw/cp-132-5400-c31d1-1.html | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Chain Sea Information Integration Co., Ltd | ai chatbot system |
Unknown:
0
|
Date Public
2021-12-17 00:00
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Mitigation
Phase: Architecture and Design
Description:
- 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]
Mitigation ID: MIT-21
Phase: Architecture and Design
Strategy: Enforcement by Conversion
Description:
- 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.
Mitigation
Phase: Architecture and Design
Description:
- Consider storing the uploaded files outside of the web document root entirely. Then, use other mechanisms to deliver the files dynamically. [REF-423]
Mitigation ID: MIT-5
Phase: Implementation
Strategy: Input Validation
Description:
- 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.
Mitigation
Phase: Architecture and Design
Description:
- 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.
Mitigation
Phase: Implementation
Strategy: Input Validation
Description:
- 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]
Mitigation
Phase: Implementation
Description:
- When running on a web server that supports case-insensitive filenames, perform case-insensitive evaluations of the extensions that are provided.
Mitigation ID: MIT-15
Phase: Architecture and Design
Description:
- 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.
Mitigation
Phase: Implementation
Description:
- Do not rely exclusively on sanity checks of file contents to ensure that the file is of the expected type and size. It may be possible for an attacker to hide code in some file segments that will still be executed by the server. For example, GIF images may contain a free-form comments field.
Mitigation
Phase: Implementation
Description:
- Do not rely exclusively on the MIME content type or filename attribute when determining how to render a file. Validating the MIME content type and ensuring that it matches the extension is only a partial solution.
Mitigation ID: MIT-17
Phases: Architecture and Design, Operation
Strategy: Environment Hardening
Description:
- Run your code using the lowest privileges that are required to accomplish the necessary tasks [REF-76]. If possible, create isolated accounts with limited privileges that are only used for a single task. That way, a successful attack will not immediately give the attacker access to the rest of the software or its environment. For example, database applications rarely need to run as the database administrator, especially in day-to-day operations.
Mitigation ID: MIT-22
Phases: Architecture and Design, Operation
Strategy: Sandbox or Jail
Description:
- Run the code in a "jail" or similar sandbox environment that enforces strict boundaries between the process and the operating system. This may effectively restrict which files can be accessed in a particular directory or which commands can be executed by the software.
- OS-level examples include the Unix chroot jail, AppArmor, and SELinux. In general, managed code may provide some protection. For example, java.io.FilePermission in the Java SecurityManager allows the software to specify restrictions on file operations.
- This may not be a feasible solution, and it only limits the impact to the operating system; the rest of the application may still be subject to compromise.
- Be careful to avoid CWE-243 and other weaknesses related to jails.
CAPEC-1: Accessing Functionality Not Properly Constrained by ACLs
In applications, particularly web applications, access to functionality is mitigated by an authorization framework. This framework maps Access Control Lists (ACLs) to elements of the application's functionality; particularly URL's for web apps. In the case that the administrator failed to specify an ACL for a particular element, an attacker may be able to access it with impunity. An attacker with the ability to access functionality not properly constrained by ACLs can obtain sensitive information and possibly compromise the entire application. Such an attacker can access resources that must be available only to users at a higher privilege level, can access management sections of the application, or can run queries for data that they otherwise not supposed to.