Weakness (CWE)
CWE-94: Improper Control of Generation of Code
The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
How to prevent it (7 mitigations)
-
Architecture and Design
Refactor your program so that you do not have to dynamically generate code.
-
Architecture and Design
Run your code in a "jail" or similar sandbox environment that enforces strict boundaries between the process and the operating system. This may effectively restrict which code can be executed by your product.
Examples include the Unix chroot jail and AppArmor. In general, managed code may provide some protection.
This may not be a feasible solution, and it only limits the impact to the operating system; the rest of your application may still be subject to compromise.
Be careful to avoid CWE-243 and other weaknesses related to jails.
-
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.
To reduce the likelihood of code injection, use stringent allowlists that limit which constructs are allowed. If you are dynamically constructing code that invokes a function, then verifying that the input is alphanumeric might be insufficient. An attacker might still be able to reference a dangerous function that you did not intend to allow, such as system(), exec(), or exit().
-
Testing
Use dynamic tools and techniques that interact with the product using large test suites with many diverse inputs, such as fuzz testing (fuzzing), robustness testing, and fault injection. The product's operation may slow down, but it should not become unstable, crash, or generate incorrect results.
-
Operation
Run the code in an environment that performs automatic taint propagation and prevents any command execution that uses tainted variables, such as Perl's "-T" switch. This will force the program to perform validation steps that remove the taint, although you must be careful to correctly validate your inputs so that you do not accidentally mark dangerous inputs as untainted (see CWE-183 and CWE-184).
-
Operation
Run the code in an environment that performs automatic taint propagation and prevents any command execution that uses tainted variables, such as Perl's "-T" switch. This will force the program to perform validation steps that remove the taint, although you must be careful to correctly validate your inputs so that you do not accidentally mark dangerous inputs as untainted (see CWE-183 and CWE-184).
-
Implementation
For Python programs, it is frequently encouraged to use the ast.literal_eval() function instead of eval, since it is intentionally designed to avoid executing code. However, an adversary could still cause excessive memory or stack consumption via deeply nested structures [REF-1372], so the python documentation discourages use of ast.literal_eval() on untrusted data [REF-1373].
Source: MITRE CWE-94
5,302 results · Feed
-
High 7.5
An arbitrary file download vulnerability in the component /Basics/DownloadInpFile of NUS-M9 ERP Management Software v3.…
-
High 7.8
An issue was discovered in Veritas NetBackup before 10.5. This only applies to NetBackup components running on a Window…
-
High 7.3
Uix Slideshow <= 1.6.5 - Unauthenticated Arbitrary Shortcode Execution
The The Uix Slideshow plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 1.6.5. This is due to the software allowing users to execute an action that does not properly validate a value before running do_sh…
-
Medium 6.3
Drop Shadow Boxes <= 1.7.14 - Authenticated (Subscriber+) Arbitrary Shortcode Execution
The The Drop Shadow Boxes plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 1.7.14. This is due to the software allowing users to execute an action that does not properly validate a value before running …
-
Low 3.5
code-projects Farmacia fornecedores.php cross site scripting
A vulnerability, which was classified as problematic, has been found in code-projects Farmacia 1.0. This issue affects some unknown processing of the file /fornecedores.php. The manipulation leads to cross site scripting. The attack may be initiated remotely.…
-
Low 3.5
SourceCodester Online Eyewear Shop Inventory Page Master.php cross site scripting
A vulnerability has been found in SourceCodester Online Eyewear Shop 1.0 and classified as problematic. Affected by this vulnerability is an unknown functionality of the file /oews/classes/Master.php?f=save_product of the component Inventory Page. The manipul…
-
Low 3.5
code-projects Farmacia adicionar-cliente.php cross site scripting
A vulnerability, which was classified as problematic, was found in code-projects Farmacia 1.0. Affected is an unknown function of the file /adicionar-cliente.php. The manipulation of the argument nome/cpf/dataNascimento leads to cross site scripting. It is po…
-
Medium 4.3
code-projects Online Shop Store signup.php cross site scripting
A vulnerability classified as problematic has been found in code-projects Online Shop Store 1.0. This affects an unknown part of the file /signup.php. The manipulation of the argument m2 with the input <svg%20onload=alert(document.cookie)> leads to cross site…
-
Low 3.5
IBPhoenix ibWebAdmin Banco de Dados Tab database.php cross site scripting
A vulnerability was found in IBPhoenix ibWebAdmin up to 1.0.2 and classified as problematic. This issue affects some unknown processing of the file /database.php of the component Banco de Dados Tab. The manipulation of the argument db_login_role leads to cros…
-
Critical 9.8
An arbitrary file upload vulnerability in the component /Production/UploadFile of NUS-M9 ERP Management Software v3.0.0…
-
Medium 4.4
An issue in UltiMaker Cura v.4.41 and 5.8.1 and before allows a local attacker to execute arbitrary code via Inter-proc…
-
High 7.7
Remote Code Execution on click of <a> Link in markdown preview
Joplin is a free, open source note taking and to-do application. Joplin-desktop has a vulnerability that leads to remote code execution (RCE) when a user clicks on an <a> link within untrusted notes. The issue arises due to insufficient sanitization of <a> ta…
-
High 7.1
Nexus Repository 2 - Remote Code Execution
A Remote Code Execution vulnerability has been discovered in Sonatype Nexus Repository 2. This issue affects Nexus Repository 2 OSS/Pro versions up to and including 2.15.1.
-
High 7.8
In DevmemIntChangeSparse2 of devicemem_server.c, there is a possible way to achieve arbitrary code execution due to a m…
-
High 7.2
Craft has a Potential Remote Code Execution via missing path normalization & Twig SSTI
Craft is a content management system (CMS). Prior to 4.12.2 and 5.4.3, Craft is missing normalizePath in the function FileHelper::absolutePath could lead to Remote Code Execution on the server via twig SSTI. This is a sequel to CVE-2023-40035. This vulnerabil…
-
Low 3.5
Public CMS Voting Management save cross site scripting
A vulnerability was found in Public CMS 5.202406.d and classified as problematic. This issue affects some unknown processing of the file /admin/cmsVote/save of the component Voting Management. The manipulation leads to cross site scripting. The attack may be …
-
High 7.3
dom-iterator code execution vulnerability
Versions of the package dom-iterator before 1.0.1 are vulnerable to Arbitrary Code Execution due to use of the Function constructor without complete input sanitization. Function generates a new function body and thus care must be given to ensure that the inpu…
-
High 8.1
TorchGeo Remote Code Execution Vulnerability
TorchGeo Remote Code Execution Vulnerability
-
Low 2.4
ZZCMS msg.php cross site scripting
A vulnerability was found in ZZCMS up to 2023. It has been rated as problematic. Affected by this issue is some unknown functionality of the file /admin/msg.php. The manipulation of the argument keyword leads to cross site scripting. The attack may be launche…
-
Low 3.5
SourceCodester Hospital Management System edit-doc.php cross site scripting
A vulnerability was found in SourceCodester Hospital Management System 1.0. It has been rated as problematic. Affected by this issue is some unknown functionality of the file /vm/doctor/edit-doc.php. The manipulation of the argument name leads to cross site s…
-
Low 3.5
code-projects Job Recruitment register.php cross site scripting
A vulnerability has been found in code-projects Job Recruitment 1.0 and classified as problematic. Affected by this vulnerability is an unknown functionality of the file /register.php. The manipulation of the argument e/role leads to cross site scripting. The…
-
Low 3.5
Sanluan PublicCMS Tag Type save cross site scripting
A vulnerability, which was classified as problematic, has been found in Sanluan PublicCMS 5.202406.d. This issue affects some unknown processing of the file /admin/cmsTagType/save of the component Tag Type Handler. The manipulation of the argument name leads …
-
Critical 9.8
PyMOL 2.5.0 contains a vulnerability in its "Run Script" function, which allows the execution of arbitrary Python code …
-
Medium 5.4
The DS allvideo.downloader.browser (aka Fast Video Downloader: Browser) application through 1.6-RC1 for Android allows …
-
Critical 9.1
The SYQ com.downloader.video.fast (aka Master Video Downloader) application through 2.0 for Android allows an attacker …
-
High 8.1
The com.superfast.video.downloader (aka Super Unlimited Video Downloader - All in One) application through 5.1.9 for An…
-
High 8.1
The com.video.downloader.all (aka All Video Downloader) application through 11.28 for Android allows an attacker to exe…
-
High 8.1
The Ikhgur mn.ikhgur.khotoch (aka Video Downloader Pro & Browser) application through 1.0.42 for Android allows an atta…
-
High 7.3CVE-2024-10958 Public exploit
WP Photo Album Plus <= 8.8.08.007 - Unauthenticated Arbitrary Shortcode Execution via getshortcodedrenderedfenodelay
The The WP Photo Album Plus plugin for WordPress is vulnerable to arbitrary shortcode execution via getshortcodedrenderedfenodelay AJAX action in all versions up to, and including, 8.8.08.007 . This is due to the software allowing users to execute an action t…
-
Low 3.5
AMTT Hotel Broadband Operation System language.php cross site scripting
A vulnerability was found in AMTT Hotel Broadband Operation System up to 3.0.3.151204 and classified as problematic. This issue affects some unknown processing of the file /language.php. The manipulation of the argument LangID/LangName/LangEName leads to cros…
-
High 7.3
Paid Membership Subscriptions – Effortless Memberships, Recurring Payments & Content Restriction <= 2.13.0 - Unauthenticated Arbitrary Shortcode Execution
The The Paid Membership Subscriptions – Effortless Memberships, Recurring Payments & Content Restriction plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 2.13.0. This is due to the software allowing use…
-
High 7.3
The FOX – Currency Switcher Professional for WooCommerce <= 1.4.2.2 - Unauthenticated Arbitrary Shortcode Execution
The The FOX – Currency Switcher Professional for WooCommerce plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 1.4.2.2. This is due to the software allowing users to execute an action that does not prope…
-
High 8.8
SeaCms 13.1 is vulnerable to code injection in the notification module of the member message notification module in the…
-
High 8.1
Moodle: remote code execution via calculated question types
A flaw was found in Moodle. Additional restrictions are required to avoid a remote code execution risk in calculated question types. Note: This requires the capability to add/update questions.
-
High 8.1
The Inshot com.downloader.privatebrowser (aka Video Downloader - XDownloader) application through 1.3.5 for Android all…
-
High 8.8
The ASD com.rocks.video.downloader (aka HD Video Downloader All Format) application through 7.0.129 for Android allows …
-
Critical 9.3
Fixes security vulnerability that allowed for server side code to be executed by a <script> tag
happy-dom is a JavaScript implementation of a web browser without its graphical user interface. Versions of happy-dom prior to 15.10.2 may execute code on the host via a script tag. This would execute code in the user context of happy-dom. Users are advised t…
-
High 7.3
Tickera – WordPress Event Ticketing <= 3.5.4.4 - Unauthenticated Arbitrary Shortcode Execution
The Tickera – WordPress Event Ticketing plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 3.5.4.4. This is due to the software allowing users to execute an action that does not properly validate a value …
-
Critical 9.2
Code Injection in BG-TEK's CoslatV3
Improper Control of Generation of Code ('Code Injection'), Improper Neutralization of Special Elements used in a Command ('Command Injection'), Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in BG-TEK …
-
Medium 4.3
Umbraco CMS Dashboard frame cross site scripting
A vulnerability was found in Umbraco CMS up to 10.7.7/12.3.6/13.5.2/14.3.1/15.1.1. It has been classified as problematic. Affected is an unknown function of the file /Umbraco/preview/frame?id{} of the component Dashboard. The manipulation of the argument cult…