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OpenAdvisories

Weakness (CWE)

CWE-78: OS Command Injection

Base Improper Neutralization of Special Elements used in an OS Command

The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command before it is sent to a downstream component.

How to prevent it (8 mitigations)
  1. Architecture and Design

    If at all possible, use library calls rather than external processes to recreate the desired functionality.

  2. Architecture and Design, Operation

    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.

  3. Architecture and Design

    For any data that will be used to generate a command to be executed, keep as much of that data out of external control as possible. For example, in web applications, this may require storing the data locally in the session's state instead of sending it out to the client in a hidden form field.

  4. 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.

  5. Architecture and Design

    Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.

    For example, consider using the ESAPI Encoding control [REF-45] or a similar tool, library, or framework. These will help the programmer encode outputs in a manner less prone to error.

  6. Implementation

    While it is risky to use dynamically-generated query strings, code, or commands that mix control and data together, sometimes it may be unavoidable. Properly quote arguments and escape any special characters within those arguments. The most conservative approach is to escape or filter all characters that do not pass an extremely strict allowlist (such as everything that is not alphanumeric or white space). If some special characters are still needed, such as white space, wrap each argument in quotes after the escaping/filtering step. Be careful of argument injection (CWE-88).

  7. Implementation

    If the program to be executed allows arguments to be specified within an input file or from standard input, then consider using that mode to pass arguments instead of the command line.

  8. Architecture and Design

    If available, use structured mechanisms that automatically enforce the separation between data and code. These mechanisms may be able to provide the relevant quoting, encoding, and validation automatically, instead of relying on the developer to provide this capability at every point where output is generated.

    Some languages offer multiple functions that can be used to invoke commands. Where possible, identify any function that invokes a command shell using a single string, and replace it with a function that requires individual arguments. These functions typically perform appropriate quoting and filtering of arguments. For example, in C, the system() function accepts a string that contains the entire command to be executed, whereas execl(), execve(), and others require an array of strings, one for each argument. In Windows, CreateProcess() only accepts one command at a time. In Perl, if system() is provided with an array of arguments, then it will quote each of the arguments.

Source: MITRE CWE-78

5,327 results · Feed

  • Low 3.3

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  • High 8.8

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  • High 8.8

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  • Low 3.3

    Coolify: Command Injection via unsanitized MongoDB collection names in database backup

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  • High 8.8

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  • High 8.8

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  • Low 3.8

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  • High 8.8

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  • Critical 9.9
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  • Medium 4.5

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  • High 7.3
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  • Medium 6.7

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  • High 7.2

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  • High 7.2

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  • High 7.2

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  • Medium 6.5

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  • Medium 6.7

    Dell PowerProtect Data Domain, versions 7.7.1.0 through 8.6, LTS2026 release version 8.6.1.0 through 8.6.1.10, LTS2025 …

  • High —

    Grackle has command/argument injection in the git worktree executor that enables RCE on provisioned hosts via an unsanitized task branch name (shell:true)

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  • Critical 9.8
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  • Critical 10.0

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  • High 7.5

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  • High 7.3

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  • Critical 9.8

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  • Critical 9.8

    Guardian Language-System Unauthenticated OS Command Injection via id Parameter in transcribe.php

    Guardian language-system passes the id GET parameter directly into a PHP exec() call in transcribe.php (line 15) without sanitization: exec(\"php jobs/transcribe.php \".$login_session.\" \".$_GET['id'].\" ...\"). No authentication is required. An unauthentica…

  • Critical 9.8

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    Guardian language-system passes the id GET parameter directly into a PHP exec() call in transcribe_amazon.php (line 15) without sanitization: exec(\"php jobs/transcribe_amazon.php \".$login_session.\" \".$_GET['id'].\" ...\"). No authentication is required. A…

  • Critical 9.8

    Guardian Language-System Unauthenticated OS Command Injection via id Parameter in translate_text.php

    Guardian language-system passes the id GET parameter directly into a PHP exec() call in translate_text.php (line 18) without sanitization: exec(\"php jobs/translate_text.php \".$login_session.\" \".$_GET['id'].\" ...\"). No authentication is required. An unau…

  • Critical 9.8

    Guardian Language-System Unauthenticated OS Command Injection via id Parameter in speech_text.php

    Guardian language-system passes the id GET parameter directly into a PHP exec() call in speech_text.php (line 18) without sanitization: exec(\"php jobs/speech_audio_text.php \".$login_session.\" \".$_GET['id'].\" ...\"). No authentication is required. An unau…

  • Critical 9.8

    Guardian Language-System Unauthenticated OS Command Injection via id Parameter in speechmac.php

    Guardian language-system passes the id GET parameter directly into a PHP exec() call in speechmac.php (line 18) without sanitization: exec(\"php jobs/speech_audio_mac.php \".$login_session.\" \".$_GET['id'].\" ...\"). No authentication is required. An unauthe…

  • Critical 9.8

    Guardian Language-System Unauthenticated OS Command Injection via id Parameter in speechmac_text.php

    Guardian language-system passes the id GET parameter directly into a PHP exec() call in speechmac_text.php (line 18) without sanitization: exec(\"php jobs/speech_audio_mac_text.php \".$login_session.\" \".$_GET['id'].\" ...\"). No authentication is required. …

  • Critical 9.8

    Guardian Language-System Unauthenticated OS Command Injection via id Parameter in complex_start.php

    Guardian language-system passes the id GET parameter directly into a PHP exec() call in complex_start.php (line 14) without sanitization: exec(\"php jobs/complex.php \".$login_session.\" \".$_GET['id'].\" ...\"). No authentication is required. An unauthentica…

  • Critical 9.8

    Guardian Language-System Unauthenticated OS Command Injection via id Parameter in speech.php

    Guardian language-system passes the id GET parameter directly into a PHP exec() call in speech.php (line 18) without sanitization: exec(\"php jobs/speech_audio.php \".$login_session.\" \".$_GET['id'].\" ...\"). No authentication is required. An unauthenticate…

  • Critical 9.8

    Guardian Language-System Unauthenticated OS Command Injection via id Parameter in text.php

    Guardian language-system passes the id GET parameter directly into a PHP exec() call in text.php (line 15) without sanitization: exec(\"php jobs/text.php \".$login_session.\" \".$_GET['id'].\" ...\"). No authentication is required. An unauthenticated remote a…

  • Critical 9.8

    Guardian Language-System Unauthenticated OS Command Injection via id Parameter in translate.php

    Guardian language-system passes the id GET parameter directly into a PHP exec() call in translate.php (line 14) without sanitization: exec(\"php jobs/translate.php \".$login_session.\" \".$_GET['id'].\" ...\"). No authentication is required. An unauthenticate…

  • Critical 9.8

    Guardian Language-System Unauthenticated OS Command Injection via id Parameter in subtitles.php

    Guardian language-system passes the id GET parameter directly into a PHP exec() call in subtitles.php (line 19) without sanitization: exec(\"php jobs/subtitle_rendering.php \".$login_session.\" \".$_GET['id'].\" ...\"). No authentication is required. An unaut…