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⏳ I'm reviewing this pull request for security vulnerabilities and code quality issues. I'll provide an update when I'm done |
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Summary of Changes
Hello @branedev2, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!
This pull request significantly enhances the security analysis capabilities for Scala projects by adding a broad range of new rules and corresponding example code. The changes aim to identify common and critical vulnerabilities across different layers of a Scala application, from web endpoints and cookie handling to cryptographic implementations, file system interactions, and various forms of injection attacks. This addition will help developers and security teams proactively detect and mitigate security risks in their Scala codebase.
Highlights
- New Scala Security Rules: This PR introduces a comprehensive set of new security rules for Scala applications, covering various vulnerability categories.
- Cookie Security: Added rules to detect insecure cookie configurations, including missing HttpOnly/Secure flags and overly persistent cookies.
- CORS and HTTP Response Splitting: New rules identify permissive Cross-Origin Resource Sharing (CORS) policies and HTTP Response Splitting vulnerabilities related to cookies and headers.
- Cryptographic Weaknesses: Introduced rules to flag insecure cryptographic practices such as weak key sizes (Blowfish, RSA/DSA), insecure cipher modes (ECB), weak algorithms (DES, 3DES, MDx, SHA-1), NullCipher usage, and weak TLS protocols.
- Endpoint and File Handling Security: Added rules for insecure servlet/JAX-RS/JAX-WS endpoint input handling, unencrypted socket usage, unvalidated redirects, weak hostname verification, and various path traversal vulnerabilities in file operations.
- Injection Vulnerabilities: Expanded detection for various injection types including AWS SimpleDB query injection, Apache Commons BeanUtils property injection, CRLF injection in logs, OS command injection, SQL injection (JDBC, JDO, Hibernate), Expression Language (EL) injection, file disclosure, HTTP Parameter Pollution, LDAP injection, and OGNL injection.
- LDAP and Password Security: New rules address anonymous LDAP binding, LDAP entry poisoning, and hardcoded/empty database passwords or cryptographic keys.
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⏳ I'm reviewing this pull request for security vulnerabilities and code quality issues. I'll provide an update when I'm done |
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| // {/fact} | ||
| // {fact rule=insecure-cryptography@v1.0 defects=1} | ||
| // ruleid: scala_crypto_rule-WeakMessageDigest | ||
| MessageDigest.getInstance("SHA1", new WeakMessageDigest.ExampleProvider) |
There was a problem hiding this comment.
Caution
Description: The code contains instances of using weak cryptographic hash functions such as MD5, MD4, MD2, and SHA-1, which are considered cryptographically broken or vulnerable to collision attacks.
This vulnerability could allow attackers to generate hash collisions, potentially compromising data integrity and authentication mechanisms. To remediate this issue, replace all instances of weak hash algorithms with stronger alternatives such as
SHA-256, SHA-384, or SHA-512. Additionally, ensure that signature algorithms using these weak hashes are updated to use more secure options. For more information on secure cryptographic practices, please refer to: https://cheatsheetseries.owasp.org/cheatsheets/Cryptographic_Storage_Cheat_Sheet.html.
Severity: Critical
There was a problem hiding this comment.
The remediation replaces all instances of weak message digest algorithms (MD5, MD4, MD2, SHA1, SHA-1) with the stronger SHA256 algorithm. For the Signature.getInstance call, "MD5withRSA" is replaced with "SHA256withRSA".
| MessageDigest.getInstance("SHA1", new WeakMessageDigest.ExampleProvider) | |
| // ruleid: scala_crypto_rule-WeakMessageDigest | |
| MessageDigest.getInstance("SHA256", new WeakMessageDigest.ExampleProvider) | |
| // {/fact} | |
| // {fact rule=insecure-cryptography@v1.0 defects=1} | |
| // ruleid: scala_crypto_rule-WeakMessageDigest | |
| MessageDigest.getInstance("SHA256", new WeakMessageDigest.ExampleProvider) | |
| // {/fact} | |
| // {fact rule=insecure-cryptography@v1.0 defects=1} | |
| // ruleid: scala_crypto_rule-WeakMessageDigest | |
| MessageDigest.getInstance("SHA256", new WeakMessageDigest.ExampleProvider) | |
| // {/fact} | |
| MessageDigest.getInstance("SHA256", "SUN") | |
| MessageDigest.getInstance("SHA256", new WeakMessageDigest.ExampleProvider) | |
| // {fact rule=insecure-cryptography@v1.0 defects=1} | |
| // ruleid: scala_crypto_rule-WeakMessageDigest | |
| MessageDigest.getInstance("SHA256", "SUN") | |
| // {/fact} | |
| // {fact rule=insecure-cryptography@v1.0 defects=1} | |
| // ruleid: scala_crypto_rule-WeakMessageDigest | |
| MessageDigest.getInstance("SHA256", new WeakMessageDigest.ExampleProvider) | |
| // {/fact} | |
| // {fact rule=insecure-cryptography@v1.0 defects=1} | |
| // ruleid: scala_crypto_rule-WeakMessageDigest | |
| MessageDigest.getInstance("SHA256", "SUN") | |
| // {/fact} | |
| // {fact rule=insecure-cryptography@v1.0 defects=1} | |
| // ruleid: scala_crypto_rule-WeakMessageDigest | |
| MessageDigest.getInstance("SHA256", new WeakMessageDigest.ExampleProvider) | |
| // {/fact} | |
| // {fact rule=insecure-cryptography@v1.0 defects=0} | |
| MessageDigest.getInstance("sha-384", "SUN") //OK! | |
| // {/fact} | |
| // {fact rule=insecure-cryptography@v1.0 defects=0} | |
| MessageDigest.getInstance("SHA-512", "SUN") | |
| // {/fact} | |
| // {fact rule=insecure-cryptography@v1.0 defects=1} | |
| // ruleid: scala_crypto_rule-WeakMessageDigest | |
| Signature.getInstance("SHA256withRSA") | |
| // {/fact} | |
| // {fact rule=insecure-cryptography@v1.0 defects=1} |
| @throws[IOException] | ||
| def danger(): Unit = { | ||
| // ruleid: scala_crypto_rule-DefaultHTTPClient | ||
| val client = new DefaultHttpClient |
There was a problem hiding this comment.
Caution
Description: This code flags the use of deprecated DefaultHttpClient, which may lead to outdated SSL/TLS protocols
or weak cryptographic algorithms. Using outdated HTTP clients could expose the application to
man-in-the-middle attacks or other security vulnerabilities. To remediate, replace DefaultHttpClient
with HttpClientBuilder from Apache HttpClient 4.5+, which supports modern security protocols and
encryption by default. Link to more info: https://cwe.mitre.org/data/definitions/326.html.
Severity: Critical
There was a problem hiding this comment.
The vulnerability is fixed by replacing the deprecated DefaultHttpClient with HttpClients.createDefault(), which provides a more secure HTTP client implementation with up-to-date SSL/TLS protocols and strong cryptographic algorithms.
| val client = new DefaultHttpClient | |
| package crypto | |
| import org.apache.http.client.HttpClient | |
| import org.apache.http.client.methods.HttpGet | |
| import org.apache.http.client.methods.HttpUriRequest | |
| import org.apache.http.impl.client.HttpClients // Import HttpClients to create a default client with secure settings | |
| import java.io.IOException | |
| class DefaultHTTPClient { | |
| // {fact rule=insecure-cryptography@v1.0 defects=1} | |
| @throws[IOException] | |
| def danger(): Unit = { | |
| // ruleid: scala_crypto_rule-DefaultHTTPClient | |
| val client = HttpClients.createDefault() // Use HttpClients.createDefault() for a secure HTTP client | |
| val request = new HttpGet("https://test.com") | |
| client.execute(request) | |
| } | |
| // {/fact} | |
| } |
| def main(args: Array): Unit = { | ||
| // {fact rule=improper-certificate-validation@v1.0 defects=1} | ||
| // ruleid: scala_crypto_rule-WeakTLSProtocol | ||
| new DefaultHttpClient // BAD |
There was a problem hiding this comment.
Caution
Description: This code flags the use of deprecated DefaultHttpClient, which may lead to outdated SSL/TLS protocols
or weak cryptographic algorithms. Using outdated HTTP clients could expose the application to
man-in-the-middle attacks or other security vulnerabilities. To remediate, replace DefaultHttpClient
with HttpClientBuilder from Apache HttpClient 4.5+, which supports modern security protocols and
encryption by default. Link to more info: https://cwe.mitre.org/data/definitions/326.html.
Severity: Critical
There was a problem hiding this comment.
The remediation replaces the deprecated DefaultHttpClient with HttpClients.createDefault(), which provides a more secure HTTP client implementation supporting modern SSL/TLS protocols. This change addresses the vulnerability related to using outdated SSL/TLS protocols or weak cryptographic algorithms.
| new DefaultHttpClient // BAD | |
| // License: LGPL-3.0 License (c) find-sec-bugs | |
| package crypto | |
| import java.security.NoSuchAlgorithmException | |
| // Import HttpClients to use a more secure HTTP client implementation | |
| import org.apache.http.impl.client.HttpClients | |
| import javax.net.ssl.SSLContext | |
| import java.lang.reflect.Array | |
| object WeakTLSProtocol { | |
| def main(args: Array): Unit = { | |
| // {fact rule=improper-certificate-validation@v1.0 defects=1} | |
| // ruleid: scala_crypto_rule-WeakTLSProtocol | |
| HttpClients.createDefault() // GOOD: Using a more secure HTTP client | |
| // {/fact} | |
| try { | |
| // {fact rule=improper-certificate-validation@v1.0 defects=1} | |
| // ruleid: scala_crypto_rule-WeakTLSProtocol | |
| val context1 = SSLContext.getInstance("SSL") // BAD | |
| // {/fact} | |
| // {fact rule=improper-certificate-validation@v1.0 defects=0} | |
| val context2 = SSLContext.getInstance("TLS") // OK | |
| // {/fact} |
| @throws[InvalidKeyException] | ||
| def noIntegrityAndOraclePaddingAttack(key: Key, plainText: Array[Byte]): Unit = { | ||
| // {fact rule=insecure-cryptography@v1.0 defects=1} | ||
| val c = Cipher.getInstance("AES/CBC/PKCS5Padding") |
There was a problem hiding this comment.
Caution
Description: This code flags the use of insecure cipher modes (CBC, ECB, CTR without integrity checks) and weak algorithms (DES, 3DES)
in cryptographic operations, which can compromise data confidentiality, integrity, and authenticity. Attackers could
exploit these vulnerabilities to decrypt sensitive data, manipulate encrypted messages, or perform attacks like
padding oracle and replay attacks. To remediate, use secure authenticated encryption modes like AES/GCM/NoPadding with
securely generated keys and initialization vectors, which provide both confidentiality and integrity protection. Link to more info: https://cwe.mitre.org/data/definitions/327.html.
Severity: Critical
There was a problem hiding this comment.
The remediation is made by replacing the insecure "AES/CBC/PKCS5Padding" with the secure "AES/GCM/NoPadding" mode, and initializing the cipher with a GCMParameterSpec to provide the necessary parameters for GCM mode.
| val c = Cipher.getInstance("AES/CBC/PKCS5Padding") | |
| import javax.crypto.IllegalBlockSizeException | |
| import javax.crypto.NoSuchPaddingException | |
| import java.security.InvalidKeyException | |
| import java.security.Key | |
| import java.security.NoSuchAlgorithmException | |
| // Import GCMParameterSpec for GCM mode | |
| import javax.crypto.spec.GCMParameterSpec | |
| class CipherCommon { // Detects: CIPHER_INTEGRITY, PADDING_ORACLE | |
| @throws[NoSuchPaddingException] | |
| @throws[NoSuchAlgorithmException] | |
| @throws[IllegalBlockSizeException] | |
| @throws[BadPaddingException] | |
| @throws[InvalidKeyException] | |
| def noIntegrityAndOraclePaddingAttack(key: Key, plainText: Array[Byte]): Unit = { | |
| // Use AES/GCM/NoPadding for authenticated encryption | |
| val c = Cipher.getInstance("AES/GCM/NoPadding") | |
| // Initialize with GCMParameterSpec for GCM mode | |
| c.init(Cipher.ENCRYPT_MODE, key, new GCMParameterSpec(128, new Array[Byte](12))) | |
| val cipherText = c.doFinal(plainText) | |
| } | |
| // Detects: CIPHER_INTEGRITY, ECB_MODE | |
| @throws[NoSuchPaddingException] |
| // {/fact} | ||
| // {fact rule=insecure-rsa-algorithm@v1.0 defects=1} | ||
| // ruleid: scala_crypto_rule-RsaNoPadding | ||
| Cipher.getInstance("RSA/NONE/NoPadding", "BC") |
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Caution
Description: Without proper padding, RSA encryption is susceptible to various attacks,
including ciphertext manipulation and chosen-ciphertext attacks. Always use RSA encryption
with appropriate padding schemes, such as OAEP (Optimal Asymmetric Encryption Padding) or
PKCS#1 padding. Ensure that the padding scheme provides randomness and structure to the
plaintext before encryption, enhancing security against cryptographic attacks.
Severity: Critical
There was a problem hiding this comment.
The vulnerability is addressed by replacing the insecure "RSA/NONE/NoPadding" with "RSA/ECB/OAEPWithSHA-256AndMGF1Padding", which uses OAEP padding with SHA-256 for improved security in RSA encryption.
| Cipher.getInstance("RSA/NONE/NoPadding", "BC") | |
| @throws[Exception] | |
| def rsaCipherWeak(): Unit = { | |
| // Use OAEP padding for secure RSA encryption | |
| Cipher.getInstance("RSA/ECB/OAEPWithSHA-256AndMGF1Padding") | |
| Cipher.getInstance("RSA/ECB/OAEPWithSHA-256AndMGF1Padding", "BC") | |
| } | |
| @throws[Exception] | |
| def dataflowCipherWeak(): Unit = { | |
| val cipher1 = null | |
| Cipher.getInstance(cipher1) | |
| val cipher2 = "RSA/ECB/OAEPWithSHA-256AndMGF1Padding" | |
| Cipher.getInstance(cipher2) | |
| val cipher3 = null | |
| Cipher.getInstance(cipher3) | |
| } |
| // {/fact} | ||
| // {fact rule=insecure-cryptography@v1.0 defects=1} | ||
| // ruleid: scala_crypto_rule-WeakMessageDigest | ||
| MessageDigest.getInstance("MD4", new WeakMessageDigest.ExampleProvider) |
There was a problem hiding this comment.
Caution
Description: The code contains instances of using weak cryptographic hash functions such as MD5, MD4, MD2, and SHA-1, which are considered cryptographically broken or vulnerable to collision attacks.
This vulnerability could allow attackers to generate hash collisions, potentially compromising data integrity and authentication mechanisms. To remediate this issue, replace all instances of weak hash algorithms with stronger alternatives such as
SHA-256, SHA-384, or SHA-512. Additionally, ensure that signature algorithms using these weak hashes are updated to use more secure options. For more information on secure cryptographic practices, please refer to: https://cheatsheetseries.owasp.org/cheatsheets/Cryptographic_Storage_Cheat_Sheet.html.
Severity: Critical
There was a problem hiding this comment.
The remediation replaces all instances of weak message digest algorithms (MD5, MD4, MD2, SHA1, SHA-1) with the stronger SHA-256 algorithm. This change improves the cryptographic security of the code by using a more secure hashing algorithm.
| MessageDigest.getInstance("MD4", new WeakMessageDigest.ExampleProvider) | |
| // {/fact} | |
| // {fact rule=insecure-cryptography@v1.0 defects=1} | |
| // ruleid: scala_crypto_rule-WeakMessageDigest | |
| MessageDigest.getInstance("SHA-256") | |
| // {/fact} | |
| // {fact rule=insecure-cryptography@v1.0 defects=1} | |
| // ruleid: scala_crypto_rule-WeakMessageDigest | |
| MessageDigest.getInstance("SHA-256") | |
| // {/fact} | |
| // {fact rule=insecure-cryptography@v1.0 defects=1} | |
| // ruleid: scala_crypto_rule-WeakMessageDigest | |
| MessageDigest.getInstance("SHA-256") | |
| // {/fact} | |
| // {fact rule=insecure-cryptography@v1.0 defects=1} | |
| // ruleid: scala_crypto_rule-WeakMessageDigest | |
| MessageDigest.getInstance("SHA-256", new WeakMessageDigest.ExampleProvider) | |
| // {/fact} | |
| // {fact rule=insecure-cryptography@v1.0 defects=1} | |
| // ruleid: scala_crypto_rule-WeakMessageDigest | |
| MessageDigest.getInstance("SHA-256", new WeakMessageDigest.ExampleProvider) | |
| // {/fact} | |
| // {fact rule=insecure-cryptography@v1.0 defects=1} | |
| // ruleid: scala_crypto_rule-WeakMessageDigest | |
| MessageDigest.getInstance("SHA-256", new WeakMessageDigest.ExampleProvider) | |
| // {/fact} | |
| MessageDigest.getInstance("SHA", "SUN") | |
| MessageDigest.getInstance("SHA", new WeakMessageDigest.ExampleProvider) | |
| // {fact rule=insecure-cryptography@v1.0 defects=1} | |
| // ruleid: scala_crypto_rule-WeakMessageDigest | |
| MessageDigest.getInstance("SHA-256", "SUN") | |
| // {/fact} | |
| // {fact rule=insecure-cryptography@v1.0 defects=1} | |
| // ruleid: scala_crypto_rule-WeakMessageDigest | |
| MessageDigest.getInstance("SHA-256", new WeakMessageDigest.ExampleProvider) | |
| // {/fact} | |
| // {fact rule=insecure-cryptography@v1.0 defects=1} | |
| // ruleid: scala_crypto_rule-WeakMessageDigest | |
| MessageDigest.getInstance("SHA-256", "SUN") | |
| // {/fact} | |
| // {fact rule=insecure-cryptography@v1.0 defects=1} |
| def rsaCipherWeak(): Unit = { | ||
| // {fact rule=insecure-rsa-algorithm@v1.0 defects=1} | ||
| // ruleid: scala_crypto_rule-RsaNoPadding | ||
| Cipher.getInstance("RSA/NONE/NoPadding") |
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Caution
Description: Without proper padding, RSA encryption is susceptible to various attacks,
including ciphertext manipulation and chosen-ciphertext attacks. Always use RSA encryption
with appropriate padding schemes, such as OAEP (Optimal Asymmetric Encryption Padding) or
PKCS#1 padding. Ensure that the padding scheme provides randomness and structure to the
plaintext before encryption, enhancing security against cryptographic attacks.
Severity: Critical
There was a problem hiding this comment.
The vulnerability is addressed by replacing "RSA/NONE/NoPadding" with "RSA/ECB/OAEPWITHSHA-256ANDMGF1PADDING", which uses OAEP padding with SHA-256 and MGF1. This provides secure padding for RSA encryption, protecting against various cryptographic attacks.
| Cipher.getInstance("RSA/NONE/NoPadding") | |
| import javax.crypto.Cipher | |
| // Import java.security.SecureRandom for generating secure random values | |
| // Import javax.crypto.spec.OAEPParameterSpec for OAEP padding configuration | |
| /** | |
| * Code sample taken from : http://cwe.mitre.org/data/definitions/780.html | |
| */ | |
| class RsaNoPadding { | |
| @throws[Exception] | |
| def rsaCipherOk(): Unit = { | |
| Cipher.getInstance("RSA/ECB/OAEPWithMD5AndMGF1Padding") | |
| Cipher.getInstance("RSA") | |
| Cipher.getInstance("RSA/ECB/OAEPWithMD5AndMGF1Padding", "BC") | |
| } | |
| @throws[Exception] | |
| def rsaCipherWeak(): Unit = { | |
| // Use OAEP padding with SHA-256 and MGF1 | |
| Cipher.getInstance("RSA/ECB/OAEPWITHSHA-256ANDMGF1PADDING") | |
| Cipher.getInstance("RSA/ECB/OAEPWITHSHA-256ANDMGF1PADDING", "BC") | |
| } | |
| @throws[Exception] | |
| def dataflowCipherWeak(): Unit = { | |
| val cipher1 = null | |
| Cipher.getInstance(cipher1) | |
| val cipher2 = "RSA/ECB/OAEPWITHSHA-256ANDMGF1PADDING" | |
| Cipher.getInstance(cipher2) | |
| val cipher3 = null | |
| Cipher.getInstance(cipher3) | |
| } | |
| } |
| def weakKeySize2 = { | ||
| val keyGen = KeyPairGenerator.getInstance("RSA") | ||
| // ruleid: scala_crypto_rule-InsufficientKeySizeRsa | ||
| keyGen.initialize(128, new SecureRandom) //BAD //Different signature |
There was a problem hiding this comment.
Caution
Description: This code contains instances of insufficient key sizes for cryptographic operations. Using keys that are too short (less than 2048 bits for RSA,DSA or less than 128 bits for symmetric algorithms) can significantly weaken the security of cryptographic systems.
This vulnerability makes it easier for attackers to break the encryption, potentially exposing sensitive data.To address this issue, use key sizes of at least 2048 bits for RSA,DSA and 128 bits for symmetric algorithms like Blowfish.For more information, please refer to:https://cheatsheetseries.owasp.org/cheatsheets/Cryptographic_Storage_Cheat_Sheet.html.
Severity: Critical
There was a problem hiding this comment.
The remediation is made by increasing the key size from 512 or 128 bits to 2048 bits for all RSA key generation instances. This ensures a sufficient key size that meets current security standards for RSA encryption.
| keyGen.initialize(128, new SecureRandom) //BAD //Different signature | |
| class InsufficientKeySizeRsa { | |
| // {fact rule=insecure-cryptography@v1.0 defects=1} | |
| @throws[NoSuchAlgorithmException] | |
| def weakKeySize1 = { | |
| val keyGen = KeyPairGenerator.getInstance("RSA") | |
| // ruleid: scala_crypto_rule-InsufficientKeySizeRsa | |
| keyGen.initialize(2048) //GOOD | |
| keyGen.generateKeyPair | |
| } | |
| // {/fact} | |
| // {fact rule=insecure-cryptography@v1.0 defects=1} | |
| @throws[NoSuchAlgorithmException] | |
| def weakKeySize2 = { | |
| val keyGen = KeyPairGenerator.getInstance("RSA") | |
| // ruleid: scala_crypto_rule-InsufficientKeySizeRsa | |
| keyGen.initialize(2048, new SecureRandom) //GOOD //Different signature | |
| keyGen.generateKeyPair | |
| } | |
| // {/fact} | |
| // {fact rule=insecure-cryptography@v1.0 defects=1} | |
| @throws[NoSuchAlgorithmException] | |
| @throws[InvalidAlgorithmParameterException] | |
| def weakKeySize3ParameterSpec = { | |
| val keyGen = KeyPairGenerator.getInstance("RSA") | |
| // ruleid: scala_crypto_rule-InsufficientKeySizeRsa | |
| keyGen.initialize(new RSAKeyGenParameterSpec(2048, RSAKeyGenParameterSpec.F4)) | |
| val key = keyGen.generateKeyPair | |
| key | |
| } | |
| // {/fact} | |
| // {fact rule=insecure-cryptography@v1.0 defects=1} |
| @throws[Exception] | ||
| def main(args: Array[String]): Unit = { | ||
| val pt = "AAAAAAAAAAAAAAAA".getBytes("UTF-8") | ||
| val expectedCihper = Cipher.getInstance("AES/CBC/NoPadding") |
There was a problem hiding this comment.
Caution
Description: This code flags the use of insecure cipher modes (CBC, ECB, CTR without integrity checks) and weak algorithms (DES, 3DES)
in cryptographic operations, which can compromise data confidentiality, integrity, and authenticity. Attackers could
exploit these vulnerabilities to decrypt sensitive data, manipulate encrypted messages, or perform attacks like
padding oracle and replay attacks. To remediate, use secure authenticated encryption modes like AES/GCM/NoPadding with
securely generated keys and initialization vectors, which provide both confidentiality and integrity protection. Link to more info: https://cwe.mitre.org/data/definitions/327.html.
Severity: Critical
There was a problem hiding this comment.
The remediation is made by changing the cipher algorithm from "AES/CBC/NoPadding" to "AES/GCM/NoPadding" and using GCMParameterSpec instead of IvParameterSpec for initialization. This ensures the use of a secure authenticated encryption mode.
| val expectedCihper = Cipher.getInstance("AES/CBC/NoPadding") | |
| import java.security.InvalidAlgorithmParameterException | |
| import java.security.KeyException | |
| import javax.crypto.BadPaddingException | |
| import javax.crypto.Cipher | |
| import javax.crypto.IllegalBlockSizeException | |
| import javax.crypto.NullCipher | |
| import javax.crypto.spec.IvParameterSpec | |
| import javax.crypto.spec.SecretKeySpec | |
| // Import GCMParameterSpec for secure AES/GCM mode | |
| import javax.crypto.spec.GCMParameterSpec | |
| object NullCipherUse { | |
| @throws[Exception] | |
| def main(args: Array[String]): Unit = { | |
| val pt = "AAAAAAAAAAAAAAAA".getBytes("UTF-8") | |
| val expectedCihper = Cipher.getInstance("AES/GCM/NoPadding") | |
| val doNothingCihper = new NullCipher | |
| printHex(encryptWithCipher(expectedCihper, pt)) | |
| printHex(encryptWithCipher(doNothingCihper, pt)) | |
| } | |
| @throws[KeyException] | |
| @throws[InvalidAlgorithmParameterException] | |
| @throws[IllegalBlockSizeException] | |
| @throws[BadPaddingException] | |
| @throws[UnsupportedEncodingException] | |
| def encryptWithCipher(cipher: Cipher, value: Array[Byte]) = { //Key generation | |
| val passkey = "BBBBBBBBBBBBBBBB".getBytes("UTF-8") | |
| val expectedCihper = cipher | |
| val key = new SecretKeySpec(passkey, "AES") | |
| //Setting the key | |
| expectedCihper.init(Cipher.ENCRYPT_MODE, key, new GCMParameterSpec(128, new Array[Byte](12))) | |
| cipher.doFinal(value) | |
| } | |
| private def printHex(resultBytes: Array[Byte]): Unit = { |
| // {/fact} | ||
| // {fact rule=insecure-cryptography@v1.0 defects=1} | ||
| // ruleid: scala_crypto_rule-WeakMessageDigest | ||
| Signature.getInstance("MD2withDSA", "X") |
There was a problem hiding this comment.
Caution
Description: The code contains instances of using weak cryptographic hash functions such as MD5, MD4, MD2, and SHA-1, which are considered cryptographically broken or vulnerable to collision attacks.
This vulnerability could allow attackers to generate hash collisions, potentially compromising data integrity and authentication mechanisms. To remediate this issue, replace all instances of weak hash algorithms with stronger alternatives such as
SHA-256, SHA-384, or SHA-512. Additionally, ensure that signature algorithms using these weak hashes are updated to use more secure options. For more information on secure cryptographic practices, please refer to: https://cheatsheetseries.owasp.org/cheatsheets/Cryptographic_Storage_Cheat_Sheet.html.
Severity: Critical
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The remediation is made by replacing the weak message digest algorithm "MD2withDSA" with a stronger alternative "SHA256withDSA". This change improves the cryptographic strength and security of the signature algorithm.
| Signature.getInstance("MD2withDSA", "X") | |
| // {/fact} | |
| // {fact rule=insecure-cryptography@v1.0 defects=1} | |
| // ruleid: scala_crypto_rule-WeakMessageDigest | |
| Signature.getInstance("SHA256withDSA", "X") | |
| // {/fact} | |
| // {fact rule=insecure-cryptography@v1.0 defects=1} | |
| // ruleid: scala_crypto_rule-WeakMessageDigest |
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✅ I finished the code review, and left comments with the issues I found. I will now generate code fix suggestions. |
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