Usage of weak hashing library (SHA-1)

• Rule ID: java_lang_weak_hash_sha1
• Languages: java
• Source: weak_hash_sha1.yml

Description

Using a weak hashing library like SHA-1 increases the risk of data breaches. SHA-1 in particular is vulnerable to collision attacks, where two different inputs can produce the same hash value, compromising data integrity and security.

Remediations

• Do not use SHA-1 for hashing. It is no longer considered secure.

  MessageDigest md = MessageDigest.getInstance("SHA-1"); // unsafe

• Do use stronger hashing algorithms such as SHA-256 to enhance security.

  MessageDigest md = MessageDigest.getInstance("SHA-256");

References

• Java MessageDigest class

Associated CWE

• CWE-328: Use of Weak Hash

OWASP Top 10

• A02:2021 - Cryptographic Failures

Configuration

To skip this rule during a scan, use the following flag

bearer scan /path/to/your-project/ --skip-rule=java_lang_weak_hash_sha1

To run only this rule during a scan, use the following flag

bearer scan /path/to/your-project/ --only-rule=java_lang_weak_hash_sha1