Weaknesses of type CWE-338

146 results

Uso de gerador de números pseudoaleatórios criptograficamente fraco

A aplicação usa funções como Math.random(), rand() ou similar para gerar valores que precisam ser impredizíveis (tokens, chaves, nonces). Esses geradores não foram projetados para segurança criptográfica e são facilmente previsíveis, permitindo um atacante adivinhar ou reproduzir os valores gerados.

Example

Um servidor Java gera tokens de sessão usando Math.random() em vez de SecureRandom, ou uma API Node.js cria chaves de reset de senha com Math.random(). Um atacante consegue predizer os próximos tokens testando sequências ou analisando padrões.

How to mitigate

Use geradores criptograficamente seguros: SecureRandom em Java, secrets em Python, crypto.randomBytes() em Node.js, random_bytes() em PHP. Garanta que esses valores sejam usados exclusivamente para fins de segurança (tokens, chaves, IVs).

CVE-2021-3990MEDIUMUse of Cryptographically Weak Pseudo-Random Number Generator (PRNG) in star7th/showdocEPSS 0.9%CVE-2024-25389HIGHRT-Thread through 5.0.2 generates random numbers with a weak algorithm of "seed = 214013L * seed + 2531011L; return (seed >> 16) & 0x7FFF;" EPSS 0.8%CVE-2022-23472MEDIUMUse of insecure random number generator in PasseoEPSS 0.8%CVE-2026-61500CRITICALRejetto HFS < 3.2.1 Session Forgery via Predictable Signing KeyEPSS 0.7%CVE-2023-24828HIGHUse of Cryptographically Weak Pseudo-Random Number Generator in OnedevEPSS 0.7%CVE-2023-2884CRITICALInsecure Randomness in CBOT's ChatbotEPSS 0.7%CVE-2022-44796CRITICALAn issue was discovered in Object First Ootbi BETA build 1.0.7.712. The authorization service has a flow that allows getting access to the WEPSS 0.7%CVE-2025-3495CRITICALCOMMGR - Insufficient Randomization Authentication BypassEPSS 0.7%CVE-2025-59390CRITICALApache Druid: Kerberos authenticaton chooses a cryptographically unsecure secret if not configured explicitly.EPSS 0.7%CVE-2022-45782HIGHAn issue was discovered in dotCMS core 5.3.8.5 through 5.3.8.15 and 21.03 through 22.10.1. A cryptographically insecure random generation alEPSS 0.6%CVE-2025-22376MEDIUMIn Net::OAuth::Client in the Net::OAuth package before 0.29 for Perl, the default nonce is a 32-bit integer generated from the built-in randEPSS 0.6%CVE-2025-40931CRITICALApache::Session::Generate::MD5 versions through 1.94 for Perl create insecure session idEPSS 0.6%CVE-2024-34538HIGHMateso PasswordSafe through 8.13.9.26689 has Weak Cryptography.EPSS 0.6%CVE-2026-5088HIGHApache::API::Password versions through 0.5.2 for Perl can generate insecure random values for saltsEPSS 0.6%CVE-2025-1796HIGHAdmin account takeover through weak Pseudo-Random number generator used in generating password reset codes in langgenius/difyEPSS 0.6%CVE-2024-23660HIGHThe Binance Trust Wallet app for iOS in commit 3cd6e8f647fbba8b5d8844fcd144365a086b629f, git tag 0.0.4 misuses the trezor-crypto library andEPSS 0.6%CVE-2024-45751MEDIUMtgt (aka Linux target framework) before 1.0.93 attempts to achieve entropy by calling rand without srand. The PRNG seed is always 1, and thuEPSS 0.6%CVE-2023-32549MEDIUMLandscape insecure token generationEPSS 0.5%CVE-2024-58135MEDIUMMojolicious versions from 7.28 through 9.45 for Perl will generate weak HMAC session cookie secrets via "mojo generate app" by defaultEPSS 0.5%CVE-2023-28835LOWInsecure randomness for default password in nextcloudEPSS 0.5%