mobsf.mobsfscan.crypto.weak_hashes.weak_hash

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GPLv3
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Weak Hash algorithm used. The hash algorithm is known to have hash collisions.

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rules:
  - id: weak_hash
    patterns:
      - pattern-either:
          - pattern: |
              $C.getInstance("=~/md5|md4/i", ...);
          - pattern: |
              $C.Files.hash(..., Hashing.md5());
          - pattern: |
              Files.hash(..., Hashing.md5());
          - pattern: |
              DigestUtils.md5Hex(...);
          - pattern: |
              DigestUtils.md5(...);
    message: Weak Hash algorithm used. The hash algorithm is known to have hash
      collisions.
    severity: WARNING
    languages:
      - java
    metadata:
      cwe: cwe-327
      owasp-mobile: m5
      masvs: crypto-4
      reference: https://github.com/MobSF/owasp-mstg/blob/master/Document/0x04g-Testing-Cryptography.md#identifying-insecure-andor-deprecated-cryptographic-algorithms-mstg-crypto-4
      license: LGPL-3.0-or-later
      vulnerability_class:
        - Other