rust.lang.security.insecure-hashes.insecure-hashes

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LGPL Commons Clause
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Detected cryptographically insecure hashing function

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Defintion

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rules:
  - id: insecure-hashes
    message: Detected cryptographically insecure hashing function
    pattern-either:
      - pattern: md2::Md2::new(...)
      - pattern: md4::Md4::new(...)
      - pattern: md5::Md5::new(...)
      - pattern: sha1::Sha1::new(...)
    metadata:
      references:
        - https://github.com/RustCrypto/hashes
        - https://docs.rs/md2/latest/md2/
        - https://docs.rs/md4/latest/md4/
        - https://docs.rs/md5/latest/md5/
        - https://docs.rs/sha-1/latest/sha1/
      technology:
        - rust
      category: security
      cwe: "CWE-328: Use of Weak Hash"
      confidence: HIGH
      likelihood: LOW
      impact: MEDIUM
      subcategory: audit
      license: Commons Clause License Condition v1.0[LGPL-2.1-only]
    languages:
      - rust
    severity: WARNING

Examples

insecure-hashes.rs

use md2::{Md2};
use md4::{Md4};
use md5::{Md5};
use sha1::{Sha1};
use sha2::{Sha256};

// ruleid: insecure-hashes
let mut hasher = Md2::new();

// ruleid: insecure-hashes
let mut hasher = Md4::new();

// ruleid: insecure-hashes
let mut hasher = Md5::new();

// ruleid: insecure-hashes
let mut hasher = Sha1::new();

// ok: insecure-hashes
let mut hasher = Sha256::new();