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Go

Go static code analysis

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

  • All rules 70
  • Vulnerability20
  • Bug7
  • Security Hotspot14
  • Code Smell29
 
Tags
    Impact
      Clean code attribute
        1. Hard-coded secrets are security-sensitive

           Security Hotspot
        2. Constructing arguments of system commands from user input is security-sensitive

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

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

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

           Security Hotspot
        6. Delivering code in production with debug features activated is security-sensitive

           Security Hotspot
        7. Searching OS commands in PATH is security-sensitive

           Security Hotspot
        8. Creating cookies without the "HttpOnly" flag is security-sensitive

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

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

           Security Hotspot
        11. Creating cookies without the "secure" flag is security-sensitive

           Security Hotspot
        12. Formatting SQL queries is security-sensitive

           Security Hotspot
        13. Hard-coded credentials are security-sensitive

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

           Security Hotspot

        Using pseudorandom number generators (PRNGs) is security-sensitive

        responsibility - trustworthy
        security
        Security Hotspot
        • cwe

        PRNGs are algorithms that produce sequences of numbers that only approximate true randomness. While they are suitable for applications like simulations or modeling, they are not appropriate for security-sensitive contexts because their outputs can be predictable if the internal state is known.

        In contrast, cryptographically secure pseudorandom number generators (CSPRNGs) are designed to be secure against prediction attacks. CSPRNGs use cryptographic algorithms to ensure that the generated sequences are not only random but also unpredictable, even if part of the sequence or the internal state becomes known. This unpredictability is crucial for security-related tasks such as generating encryption keys, tokens, or any other values that must remain confidential and resistant to guessing attacks.

        For example, the use of non-cryptographic PRNGs has led to vulnerabilities such as:

        • CVE-2013-6386
        • CVE-2006-3419
        • CVE-2008-4102

        When software generates predictable values in a context requiring unpredictability, it may be possible for an attacker to guess the next value that will be generated, and use this guess to impersonate another user or access sensitive information. Therefore, it is critical to use CSPRNGs in any security-sensitive application to ensure the robustness and security of the system.

        Ask Yourself Whether

        • the code using the generated value requires it to be unpredictable. It is the case for all encryption mechanisms or when a secret value, such as a password, is hashed.
        • the function you use is a non-cryptographic PRNG.
        • the generated value is used multiple times.
        • an attacker can access the generated value.

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

        Recommended Secure Coding Practices

        • Only use random number generators which are recommended by OWASP or any other trusted organization.
        • Use the generated random values only once.
        • You should not expose the generated random value. If you have to store it, make sure that the database or file is secure.

        Code examples

        Noncompliant code example

        import "math/rand"
        
        a := make([]byte, 10)
        rand.Read(a) // Sensitive
        
        import "math/rand"
        
        num := rand.Intn(100) // Sensitive
        

        Compliant solution

        import "crypto/rand"
        
        a := make([]byte, 10)
        _, err := rand.Read(a)
        if err != nil {
            panic(err)
        }
        
        import "crypto/rand"
        
        temp, err := rand.Int(rand.Reader, big.NewInt(100))
        if err != nil {
            panic(err)
        }
        num := temp.Int64()
        

        See

        • OWASP - Secure Random Number Generation Cheat Sheet
        • OWASP - Top 10 2021 Category A2 - Cryptographic Failures
        • OWASP - Top 10 2017 Category A3 - Sensitive Data Exposure
        • CWE - CWE-338 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
        • CWE - CWE-330 - Use of Insufficiently Random Values
        • CWE - CWE-326 - Inadequate Encryption Strength
        • CWE - CWE-1241 - Use of Predictable Algorithm in Random Number Generator
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        • SonarQube ServerAnalyze code in your
          on-premise CI

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