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C

C static code analysis

Unique rules to find Bugs, Vulnerabilities, Security Hotspots, and Code Smells in your C code

  • All rules 315
  • Vulnerability13
  • Bug76
  • Security Hotspot19
  • Code Smell207

  • Quick Fix 19
 
Tags
    Impact
      Clean code attribute
        1. Hard-coded secrets are security-sensitive

           Security Hotspot
        2. "sprintf" should not be used

           Security Hotspot
        3. Changing working directories without verifying the success is security-sensitive

           Security Hotspot
        4. Setting capabilities is security-sensitive

           Security Hotspot
        5. Using "tmpnam", "tmpnam_s" or "tmpnam_r" is security-sensitive

           Security Hotspot
        6. Using "strncpy" or "wcsncpy" is security-sensitive

           Security Hotspot
        7. Using "strncat" or "wcsncat" is security-sensitive

           Security Hotspot
        8. Using "strcat" or "wcscat" is security-sensitive

           Security Hotspot
        9. Using "strlen" or "wcslen" is security-sensitive

           Security Hotspot
        10. Changing directories improperly when using "chroot" is security-sensitive

           Security Hotspot
        11. Using "strcpy" or "wcscpy" is security-sensitive

           Security Hotspot
        12. Using publicly writable directories is security-sensitive

           Security Hotspot
        13. Using clear-text protocols is security-sensitive

           Security Hotspot
        14. Expanding archive files without controlling resource consumption is security-sensitive

           Security Hotspot
        15. Using weak hashing algorithms is security-sensitive

           Security Hotspot
        16. Setting loose POSIX file permissions is security-sensitive

           Security Hotspot
        17. Using pseudorandom number generators (PRNGs) is security-sensitive

           Security Hotspot
        18. Hard-coded passwords are security-sensitive

           Security Hotspot
        19. Using hardcoded IP addresses is security-sensitive

           Security Hotspot

        Hard-coded passwords are security-sensitive

        responsibility - trustworthy
        security
        Security Hotspot
        • cwe
        • cert

        Because it is easy to extract strings from an application source code or binary, passwords should not be hard-coded. This is particularly true for applications that are distributed or that are open-source.

        In the past, it has led to the following vulnerabilities:

        • CVE-2019-13466
        • CVE-2018-15389

        Passwords should be stored outside of the code in a configuration file, a database, or a management service for secrets.

        This rule looks for hard-coded passwords in variable names that match any of the patterns from the provided list.

        Ask Yourself Whether

        • Credentials allow access to a sensitive component like a database, a file storage, an API or a service.
        • Credentials are used in production environments.
        • Application re-distribution is required before updating the credentials.

        There is a risk if you answered yes to any of those questions.

        Recommended Secure Coding Practices

        • Store the credentials in a configuration file that is not pushed to the code repository.
        • Store the credentials in a database.
        • Use your cloud provider’s service for managing secrets.
        • If a password has been disclosed through the source code: change it.

        Sensitive Code Example

        dbi_conn conn = dbi_conn_new("mysql");
        string password = "secret"; // Sensitive
        dbi_conn_set_option(conn, "password", password.c_str());
        

        Compliant Solution

        dbi_conn conn = dbi_conn_new("mysql");
        string password = getDatabasePassword(); // Compliant
        dbi_conn_set_option(conn, "password", password.c_str()); // Compliant
        

        See

        • OWASP - Top 10 2021 Category A7 - Identification and Authentication Failures
        • OWASP - Top 10 2017 Category A2 - Broken Authentication
        • CWE - CWE-259 - Use of Hard-coded Password
        • Derived from FindSecBugs rule Hard Coded Password
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          on-premise CI
          Developer Edition
          Available Since
          9.1

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