attack-tree.md

Attack Tree Analysis for sharkdp/fd

Objective: Gain unauthorized access, execute arbitrary code, or cause denial of service on the web application's server by exploiting the application's interaction with fd.

Attack Tree Visualization

Attack Goal: Compromise Application via fd Exploitation ├───[1.0] Gain Unauthorized Access/Data Breach [HIGH RISK PATH] │ ├───[1.1] Path Traversal via fd [HIGH RISK PATH] │ │ ├───[1.1.1] Exploit Insufficient Input Sanitization [CRITICAL NODE] │ │ │ └───[1.1.1.1] Inject Path Traversal Sequences (e.g., ../) │ │ └───[1.1.3] Leverage fd's -x/--exec or -X/--exec-batch with Path Traversal [HIGH RISK PATH] [CRITICAL NODE] │ │ └───[1.1.3.1] Execute Commands on Sensitive Files outside Intended Scope ├───[2.0] Achieve Remote Code Execution (RCE) [HIGH RISK PATH] │ ├───[2.1] Command Injection via fd Arguments [HIGH RISK PATH] [CRITICAL NODE] │ │ ├───[2.1.1] Exploit Unsanitized User Input in fd Command [CRITICAL NODE] │ │ │ └───[2.1.1.1] Inject Shell Commands within fd Arguments │ │ ├───[2.1.2] Leverage -x/--exec or -X/--exec-batch for Command Injection [HIGH RISK PATH] [CRITICAL NODE] │ │ │ └───[2.1.2.1] Inject Malicious Commands via Filename or Path Manipulation │ └───[2.2] Exploiting fd's -x/--exec or -X/--exec-batch with Malicious Files [HIGH RISK PATH] [CRITICAL NODE] │ └───[2.2.1] Upload/Place Malicious Files for Execution via fd [CRITICAL NODE] │ └───[2.2.1.1] Trigger fd to Execute Malicious Code in Uploaded/Placed Files

Attack Tree Path: 1.0 Gain Unauthorized Access/Data Breach [HIGH RISK PATH]

• 1.1 Path Traversal via fd [HIGH RISK PATH]:

  • Attack Vector: Exploiting the application's use of fd to access files and directories outside the intended scope. This is achieved by manipulating user-controlled input that is used to construct file paths for fd.

  • Potential Impact: Unauthorized access to sensitive files, configuration files, application code, or user data. This can lead to data breaches, information disclosure, and further compromise of the application.

  • 1.1.1 Exploit Insufficient Input Sanitization [CRITICAL NODE]:

    • Attack Vector: The application fails to properly sanitize or validate user input before using it to construct file paths for fd.
    • Attack Example: Injecting path traversal sequences like ../ or URL encoded equivalents into input fields that are used in fd commands.
    • Potential Impact: Allows attackers to bypass intended directory restrictions and instruct fd to search or operate on files outside the designated scope.

  • 1.1.3 Leverage fd's -x/--exec or -X/--exec-batch with Path Traversal [HIGH RISK PATH] [CRITICAL NODE]:

    • Attack Vector: Combining path traversal vulnerabilities with the -x or -X options of fd. This allows attackers not only to access files outside the intended scope but also to execute commands on them.
    • Attack Example: Using path traversal to target sensitive files (e.g., configuration files, system files) and then using -x to execute commands like cat or more malicious scripts on these files.
    • Potential Impact: Significant escalation of path traversal impact. Can lead to information disclosure, privilege escalation, and potentially remote code execution if commands can be crafted to exploit vulnerabilities in the executed commands or scripts.

Attack Tree Path: 1.1 Path Traversal via fd [HIGH RISK PATH]

• Attack Vector: Exploiting the application's use of fd to access files and directories outside the intended scope. This is achieved by manipulating user-controlled input that is used to construct file paths for fd.

  • Potential Impact: Unauthorized access to sensitive files, configuration files, application code, or user data. This can lead to data breaches, information disclosure, and further compromise of the application.

  • 1.1.1 Exploit Insufficient Input Sanitization [CRITICAL NODE]:

    • Attack Vector: The application fails to properly sanitize or validate user input before using it to construct file paths for fd.
    • Attack Example: Injecting path traversal sequences like ../ or URL encoded equivalents into input fields that are used in fd commands.
    • Potential Impact: Allows attackers to bypass intended directory restrictions and instruct fd to search or operate on files outside the designated scope.

  • 1.1.3 Leverage fd's -x/--exec or -X/--exec-batch with Path Traversal [HIGH RISK PATH] [CRITICAL NODE]:

    • Attack Vector: Combining path traversal vulnerabilities with the -x or -X options of fd. This allows attackers not only to access files outside the intended scope but also to execute commands on them.
    • Attack Example: Using path traversal to target sensitive files (e.g., configuration files, system files) and then using -x to execute commands like cat or more malicious scripts on these files.
    • Potential Impact: Significant escalation of path traversal impact. Can lead to information disclosure, privilege escalation, and potentially remote code execution if commands can be crafted to exploit vulnerabilities in the executed commands or scripts.

Attack Tree Path: 1.1.1 Exploit Insufficient Input Sanitization [CRITICAL NODE]

• Attack Vector: The application fails to properly sanitize or validate user input before using it to construct file paths for fd. * Attack Example: Injecting path traversal sequences like ../ or URL encoded equivalents into input fields that are used in fd commands. * Potential Impact: Allows attackers to bypass intended directory restrictions and instruct fd to search or operate on files outside the designated scope.

Attack Tree Path: 1.1.3 Leverage fd's -x/--exec or -X/--exec-batch with Path Traversal [HIGH RISK PATH] [CRITICAL NODE]

• Attack Vector: Combining path traversal vulnerabilities with the -x or -X options of fd. This allows attackers not only to access files outside the intended scope but also to execute commands on them. * Attack Example: Using path traversal to target sensitive files (e.g., configuration files, system files) and then using -x to execute commands like cat or more malicious scripts on these files. * Potential Impact: Significant escalation of path traversal impact. Can lead to information disclosure, privilege escalation, and potentially remote code execution if commands can be crafted to exploit vulnerabilities in the executed commands or scripts.

Attack Tree Path: 2.0 Achieve Remote Code Execution (RCE) [HIGH RISK PATH]

• 2.1 Command Injection via fd Arguments [HIGH RISK PATH] [CRITICAL NODE]:

  • Attack Vector: Injecting shell commands into the arguments passed to the fd command when the application constructs the command string using user-controlled input without proper sanitization or escaping.

  • Potential Impact: Full system compromise through remote code execution. Attackers can execute arbitrary commands on the server with the privileges of the application user.

  • 2.1.1 Exploit Unsanitized User Input in fd Command [CRITICAL NODE]:

    • Attack Vector: The application directly concatenates user input into the fd command string without proper escaping or parameterization.
    • Attack Example: Injecting shell metacharacters like ;, |, &, or backticks into input fields that are directly used in constructing the fd command. For example, if the application uses fd "{user_input}" ..., an attacker could input ; malicious_command ;.
    • Potential Impact: Direct command injection leading to RCE.

  • 2.1.2 Leverage -x/--exec or -X/--exec-batch for Command Injection [HIGH RISK PATH] [CRITICAL NODE]:

    • Attack Vector: Exploiting vulnerabilities in how the application uses -x or -X options, allowing injection of malicious commands through filename or path manipulation, or by manipulating the command executed by -x/-X.
    • Attack Example: If the application uses -x "process_file {}" and the process_file script is vulnerable to argument injection, an attacker might craft filenames or paths that, when processed by fd and passed to process_file via {}, result in command injection within process_file.
    • Potential Impact: RCE through injection points related to the command execution features of fd.

  • 2.2 Exploiting fd's -x/--exec or -X/--exec-batch with Malicious Files [HIGH RISK PATH] [CRITICAL NODE]:

    • Attack Vector: Uploading or placing malicious files onto the server and then leveraging fd with -x or -X to execute these malicious files.

    • Potential Impact: RCE by executing attacker-controlled code placed on the server.

    • 2.2.1 Upload/Place Malicious Files for Execution via fd [CRITICAL NODE]:

      • Attack Vector: Attackers upload or place files containing malicious code (e.g., scripts, executables) in directories that fd is configured to search.
      • Attack Example: Uploading a PHP script containing a web shell and then crafting an fd command (potentially combined with path traversal or other techniques) to locate and execute this script using -x php {}.
      • Potential Impact: RCE by triggering the execution of malicious code uploaded or placed by the attacker.

Attack Tree Path: 2.1 Command Injection via fd Arguments [HIGH RISK PATH] [CRITICAL NODE]

• Attack Vector: Injecting shell commands into the arguments passed to the fd command when the application constructs the command string using user-controlled input without proper sanitization or escaping.

  • Potential Impact: Full system compromise through remote code execution. Attackers can execute arbitrary commands on the server with the privileges of the application user.

  • 2.1.1 Exploit Unsanitized User Input in fd Command [CRITICAL NODE]:

    • Attack Vector: The application directly concatenates user input into the fd command string without proper escaping or parameterization.
    • Attack Example: Injecting shell metacharacters like ;, |, &, or backticks into input fields that are directly used in constructing the fd command. For example, if the application uses fd "{user_input}" ..., an attacker could input ; malicious_command ;.
    • Potential Impact: Direct command injection leading to RCE.

  • 2.1.2 Leverage -x/--exec or -X/--exec-batch for Command Injection [HIGH RISK PATH] [CRITICAL NODE]:

    • Attack Vector: Exploiting vulnerabilities in how the application uses -x or -X options, allowing injection of malicious commands through filename or path manipulation, or by manipulating the command executed by -x/-X.
    • Attack Example: If the application uses -x "process_file {}" and the process_file script is vulnerable to argument injection, an attacker might craft filenames or paths that, when processed by fd and passed to process_file via {}, result in command injection within process_file.
    • Potential Impact: RCE through injection points related to the command execution features of fd.

Attack Tree Path: 2.1.1 Exploit Unsanitized User Input in fd Command [CRITICAL NODE]

• Attack Vector: The application directly concatenates user input into the fd command string without proper escaping or parameterization. * Attack Example: Injecting shell metacharacters like ;, |, &, or backticks into input fields that are directly used in constructing the fd command. For example, if the application uses fd "{user_input}" ..., an attacker could input ; malicious_command ;. * Potential Impact: Direct command injection leading to RCE.

Attack Tree Path: 2.1.2 Leverage -x/--exec or -X/--exec-batch for Command Injection [HIGH RISK PATH] [CRITICAL NODE]

• Attack Vector: Exploiting vulnerabilities in how the application uses -x or -X options, allowing injection of malicious commands through filename or path manipulation, or by manipulating the command executed by -x/-X. * Attack Example: If the application uses -x "process_file {}" and the process_file script is vulnerable to argument injection, an attacker might craft filenames or paths that, when processed by fd and passed to process_file via {}, result in command injection within process_file. * Potential Impact: RCE through injection points related to the command execution features of fd.

Attack Tree Path: 2.2 Exploiting fd's -x/--exec or -X/--exec-batch with Malicious Files [HIGH RISK PATH] [CRITICAL NODE]

• Attack Vector: Uploading or placing malicious files onto the server and then leveraging fd with -x or -X to execute these malicious files.

  • Potential Impact: RCE by executing attacker-controlled code placed on the server.

  • 2.2.1 Upload/Place Malicious Files for Execution via fd [CRITICAL NODE]:

    • Attack Vector: Attackers upload or place files containing malicious code (e.g., scripts, executables) in directories that fd is configured to search.
    • Attack Example: Uploading a PHP script containing a web shell and then crafting an fd command (potentially combined with path traversal or other techniques) to locate and execute this script using -x php {}.
    • Potential Impact: RCE by triggering the execution of malicious code uploaded or placed by the attacker.

Attack Tree Path: 2.2.1 Upload/Place Malicious Files for Execution via fd [CRITICAL NODE]

• Attack Vector: Attackers upload or place files containing malicious code (e.g., scripts, executables) in directories that fd is configured to search. * Attack Example: Uploading a PHP script containing a web shell and then crafting an fd command (potentially combined with path traversal or other techniques) to locate and execute this script using -x php {}. * Potential Impact: RCE by triggering the execution of malicious code uploaded or placed by the attacker.