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Update main.java #1

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40 changes: 20 additions & 20 deletions java/main.java
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Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,7 @@ class Connector1 {
@javax.jws.WebMethod
void connect(HttpServletRequest req){
HttpServletResponse res = new HttpServletResponse();
res.setHeader("Access-Control-Allow-Origin", "*");
res.setHeader("Access-Control-Allow-Origin", "*");
}
}

Expand All @@ -20,7 +20,7 @@ public class HttpRequestDebugFilter implements Filter {
public void doFilter(ServletRequest request) throws IOException,
ServletException {
if (request instanceof HttpServletRequest) {
javax.crypto.Cipher.getInstance("/CBC/PKCS5Padding")
javax.crypto.Cipher.getInstance("/CBC/PKCS5Padding" )
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MEDIUM  Integrity of the data during transmission is not being verified
    File: main.java | Checkov ID: CKV3_SAST_12

Description

CWE: CWE-353: Missing Support for Integrity Check
OWASP: A08:2021 - Software and Data Integrity Failures

This violation is indicating that the cipher being used for encryption does not provide an integrity check to validate that the encrypted data has not been tampered with. Specifically, it flags the use of AES and DES (or triple DES) in ECB (Electronic Codebook) mode and the use of CBC (Cipher Block Chaining) mode with PKCS5 padding, which do not inherently provide integrity checks.

When these ciphers are used without an additional mechanism to ensure the integrity of the data, it makes the encrypted data susceptible to alterations by an adversary without detection, presenting a security concern.

Example violating code:

import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;

public class Main {
    public static void main(String[] args) throws Exception {
        SecretKeySpec key = new SecretKeySpec("1234567812345678".getBytes(), "AES");
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        cipher.init(Cipher.ENCRYPT_MODE, key);
    }
}

In the example above, AES encryption with CBC mode and PKCS5Padding is being used, which doesn't provide an integrity check on the encrypted data.

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HIGH  Use of a broken or risky cryptographic algorithm
    File: main.java | Checkov ID: CKV3_SAST_148

Description

CWE: CWE-327: Use of a Broken or Risky Cryptographic Algorithm
OWASP: A02:2021 - Cryptographic Failures

This policy detects the use of a broken or risky cryptographic algorithm in Java code. The use of these algorithms can introduce vulnerabilities that could be exploited by attackers to tamper with ciphertext and compromise the security of the system.

Vulnerable code example:

Cipher.getInstance("DES");

The above code example uses the "DES" cryptographic algorithm, which is considered weak and vulnerable to attack. It does not provide built-in message integrity, making it easier for an adversary to tamper with the ciphertext and potentially decrypt the data.

}
}
}
Expand All @@ -30,7 +30,7 @@ public class WebSecurityConfig extends WebSecurityConfigurerAdapter {

@Override
protected void configure(HttpSecurity http) throws Exception {
http.csrf().ignoringAntMatchers("/route/fre");
http.csrf().ignoringAntMatchers("/route/fre" );
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MEDIUM  CSRF is Disabled
    File: main.java | Checkov ID: CKV3_SAST_25

Description

CWE: CWE-352: Cross-site forgery
OWASP: A01:2021 - Broken Access Control

This policy aims to prevent the disabling of Cross-Site Request Forgery (CSRF) protection in web applications. CSRF is an attack that tricks the victim into submitting a malicious request. Since web browsers automatically include cookies, the actions can be authenticated and sensitive if CSRF protection is disabled.

Example of violating code:

import org.springframework.security.config.annotation.web.builders.HttpSecurity;

public class SecurityConfig {
    public void configure(HttpSecurity http) throws Exception {
        http.csrf().disable();
        // OR
        http.csrf().ignoringAntMatchers("/api/*");
    }
}

This code is problematic because it disables CSRF protection entirely or for specific URL patterns, leaving the application vulnerable to CSRF attacks.

}
}

Expand All @@ -43,57 +43,57 @@ void connect(HttpServletRequest req){

class Connector3 {
void connect(HttpServletRequest req){
javax.servlet.http.Cookie cookie = new Cookie("cookie")
javax.servlet.http.Cookie cookie = new Cookie("cookie" )
HttpServletResponse res = new HttpServletResponse();
res.addCookie(cookie);
res.addCookie(cookie );
}
}

class Connector4 {
@javax.jws.WebMethod
void connect(HttpServletRequest req){
javax.crypto.Cipher.getInstance("DES/CBC/NoPadding");
javax.crypto.Cipher.getInstance("DES/CBC/NoPadding" );
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MEDIUM  Unsafe DES algorithm used
    File: main.java | Checkov ID: CKV3_SAST_17

Description

CWE: CWE-327: Use of a Broken or Risky Cryptographic Algorithm
OWASP: A02:2021 - Cryptographic Failures

This policy is warning against the use of the Data Encryption Standard (DES) encryption algorithm in Java applications. DES, including its variant Triple DES (3DES or DESede), has been found to be insecure against sufficiently equipped attackers due to its relatively small key size. NIST (the National Institute of Standards and Technology) recommends using the AES (Advanced Encryption Standard) block cipher instead.

Here's an example of violating code:

import javax.crypto.Cipher;

public class Encryption {
    public byte[] encryptData(byte[] data, SecretKey key) throws Exception {
        Cipher cipher = Cipher.getInstance("DES");
        cipher.init(Cipher.ENCRYPT_MODE, key);
        return cipher.doFinal(data);
    }
}

In this code snippet, the Cipher.getInstance method is called with "DES" as an argument, indicating that DES encryption is being used.

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HIGH  Use of a broken or risky cryptographic algorithm
    File: main.java | Checkov ID: CKV3_SAST_148

Description

CWE: CWE-327: Use of a Broken or Risky Cryptographic Algorithm
OWASP: A02:2021 - Cryptographic Failures

This policy detects the use of a broken or risky cryptographic algorithm in Java code. The use of these algorithms can introduce vulnerabilities that could be exploited by attackers to tamper with ciphertext and compromise the security of the system.

Vulnerable code example:

Cipher.getInstance("DES");

The above code example uses the "DES" cryptographic algorithm, which is considered weak and vulnerable to attack. It does not provide built-in message integrity, making it easier for an adversary to tamper with the ciphertext and potentially decrypt the data.

}
}

class Connector5 {
@javax.jws.WebMethod
void connect(HttpServletRequest req){
Keygen keygen = javax.crypto.KeyGenerator.getInstance("Blowfish");
keygen.init(100);
Keygen keygen = javax.crypto.KeyGenerator.getInstance("Blowfish" );
keygen.init(100 );
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MEDIUM  Encryption keys with less than 128 bits
    File: main.java | Checkov ID: CKV3_SAST_18

Description

CWE: CWE-326: Inadequate Encryption Strength
OWASP: A02:2021 - Cryptographic Failures

The policy is cautioning against the use of small key sizes for encryption, in particular with the Blowfish encryption algorithm. The key size should be at least 128 bits to ensure sufficient resistance against brute force attacks, where an attacker systematically checks all possible keys to decrypt the encrypted data.

An example of violating code could be:

import javax.crypto.KeyGenerator;

public class KeyGen {
    public void generateKey() throws Exception {
        KeyGenerator keyGen = KeyGenerator.getInstance("Blowfish");
        keyGen.init(64); // Violates the policy.
    }
}

In this code snippet, the KeyGenerator.init method is called with 64, indicating a 64-bit key size is being used for Blowfish, which is smaller than the recommended 128 bits.

}
}

class Connector6 {
@javax.jws.WebMethod
void connect(HttpServletRequest req){
javax.servlet.http.Cookie cook = new Cookie("cookie");
cook.setSecure(false);
req.addCookie(cook);
javax.servlet.http.Cookie cook = new Cookie("cookie" );
cook.setSecure(false );
req.addCookie(cook );
}
}


class Connector7 {
@javax.jws.WebMethod
void connect(HttpServletRequest req){
Cookie cook = new Cookie("cookie");
cook.setMaxAge(31536000);
Cookie cook = new Cookie("cookie" );
cook.setMaxAge(31536000 );
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MEDIUM  Cookie stored for an extended period of time
    File: main.java | Checkov ID: CKV3_SAST_20

Description

CWE: CWE-539: Information Exposure Through Persistent Cookies
OWASP: A04:2021 - Insecure Design

This policy refers to the practice of setting cookies to persist for an extended period of time. The value of 31536000 seconds corresponds to one year. If a cookie, especially one containing sensitive data, is set to persist for a year or more, it can increase the risk of data exposure or account compromise, especially if the user's system is compromised or the cookie is otherwise mishandled.

Here is an example of a violating code:

import javax.servlet.http.Cookie;

public class PersistentCookieCreator {
    public void createCookie(javax.servlet.http.HttpServletResponse response) {
        Cookie myCookie = new Cookie("user", "john");
        myCookie.setMaxAge(31536000); // Cookie is set to persist for one year
        response.addCookie(myCookie);
    }
}

In the above code, a new cookie is being created and the maximum age of the cookie is being set to one year. This means the cookie will persist for that duration, even if the user closes the browser or restarts the system.

}
}

class Connector8 {
void connect(HttpServletRequest req){
java.nio.file.Files.createTempDirectory("file");
java.nio.file.Files.createTempDirectory("file" );
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MEDIUM  File Creation in Publicly Shared Directories
    File: main.java | Checkov ID: CKV3_SAST_24

Description

CWE: CWE-377: Insecure Temporary File
OWASP: A01:2021 - Broken Access Control

This policy aims to prevent applications from creating files in publicly shared directories such as /tmp or /var/tmp on Linux-based systems. These directories are generally writable by any user, making them susceptible to race condition attacks involving filenames. A successful attack could lead to unauthorized file access, modification, corruption, or deletion. The risk escalates if the application operates with elevated permissions.

Example of violating code:

import java.nio.file.Paths;
import java.io.File;

public class InsecureFileCreation {
    public void createFile() {
        Paths.get("/tmp/insecureFile");
        new File("/var/tmp/insecureFile");
    }
}

This code is problematic because it creates files in publicly shared directories, exposing the application to risks associated with insecure temporary files.

}
}

public class WeakNightVoter implements AccessDecisionVoter {
@Override
public int vote(Authentication authentication, Object object, Collection collection) { // Noncompliant
Calendar calendar = Calendar.getInstance();
public int vote(Authentication authentication, Object object, Collection collection) { //Noncompliant
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MEDIUM  Authorization is not robust
    File: main.java | Checkov ID: CKV3_SAST_26

Description

CWE: CWE-285: Improper Authorization
OWASP: A01:2021 - Broken Access Control

This policy aims to ensure that the authorization process within an application is robust and not subject to vulnerabilities. Authorization decisions should be robust and depend on strong variables such as user authentication, roles, privileges, location, and time of access.

Example of violating code:

public class WeakVoter implements AccessDecisionVoter {
    @Override
    public int vote(SecurityContext context) {
        // Weak decision
        return ACCESS_ABSTAIN;
    }
}

This code is problematic because it abstains from making a strong authorization decision, potentially allowing unauthorized access.

Calendar calendar = Calendar.getInstance( );
int currentHour = calendar.get(Calendar.HOUR_OF_DAY);
return ACCESS_ABSTAIN; // Noncompliant
return ACCESS_ABSTAIN; //Noncompliant
}
}

Expand All @@ -102,15 +102,15 @@ class Connector9 {
void connect(HttpServletRequest req){
Cookie cook = new Cookie("cookie");
for (Cookie cookie : req.getCookies()) {
cookie.getPath();
cookie.getPath( );
}
}
}

class Connector10 {
@javax.jws.WebMethod
void connect(HttpServletRequest req){
Cookie cook = new Cookie("cookie");
Cookie cook = new Cookie("cookie" );
req.setAttribute(cook.getString(), cook.getVal());
}
}
Expand All @@ -126,7 +126,7 @@ public class Decorator2 {

public void decorator(HttpServletRequest request) {
ServletFileUpload sfu = new ServletFileUpload();
FileItem[] files = sfu.parseRequest(request);
FileItem[] files = sfu.parseRequest(request );
for (FileItem file : files) {
System.out.println(file.getName());
}
Expand Down