Falhas do tipo CWE-338

169 resultados

Uso de gerador de números pseudoaleatórios criptograficamente fraco

A aplicação utiliza um PRNG (gerador de números pseudoaleatórios) inadequado para contextos de segurança, como Math.random() ou similar, onde deveria usar funções criptograficamente seguras. Isso permite que um atacante previsibilidade ou reproduza sequências de números que deveriam ser imprevisíveis, comprometendo tokens, chaves de sessão, nonces ou outros valores críticos.

Exemplo

Um sistema gera tokens de redefinição de senha usando Math.random() em vez de uma função criptográfica. Um atacante consegue prever ou enumerar tokens válidos dentro de um tempo útil, permitindo hijacking de contas.

Como mitigar

Substitua PRNGs genéricos por funções criptograficamente seguras: em Java use java.security.SecureRandom, em Node.js use crypto.randomBytes(), em Python use secrets ou os.urandom(). Revise todo código que gera valores de segurança e aplique essas funções.

CVE-2023-48224HIGHCryptographically Weak Generation of One-Time Codes for Identity Verification in ethyca-fidesEPSS 1.0%CVE-2021-3990MEDIUMUse of Cryptographically Weak Pseudo-Random Number Generator (PRNG) in star7th/showdocEPSS 0.9%CVE-2022-23472MEDIUMUse of insecure random number generator in PasseoEPSS 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-2022-44796CRITICALAn 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 0.8%CVE-2026-14495HIGHDoLogin Security <= 4.3 - Unauthenticated Authentication Bypass via Insufficient Randomness via 'dologin' Parameter Weak PRNG TokenEPSS 0.8%CVE-2026-93868CRITICALCotonti through 1.0.0 Predictable Password Recovery Token via Weak PRNGEPSS 0.7%CVE-2025-3495CRITICALCOMMGR - Insufficient Randomization Authentication BypassEPSS 0.7%CVE-2026-9323CRITICALInsecure PRNG and Information Exposure in urwid Web Display BackendEPSS 0.7%CVE-2023-24828HIGHUse of Cryptographically Weak Pseudo-Random Number Generator in OnedevEPSS 0.7%CVE-2026-92749CRITICALSafeLine through 9.4.1 Authentication Bypass via Weak Session SecretEPSS 0.7%CVE-2025-59390CRITICALApache Druid: Kerberos authenticaton chooses a cryptographically unsecure secret if not configured explicitly.EPSS 0.7%CVE-2023-2884CRITICALInsecure Randomness in CBOT's ChatbotEPSS 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-2025-40931CRITICALApache::Session::Generate::MD5 versions through 1.94 for Perl create insecure session idEPSS 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-2025-1796HIGHAdmin account takeover through weak Pseudo-Random number generator used in generating password reset codes in langgenius/difyEPSS 0.6%CVE-2026-18611HIGHData-science-pipelines-operator: dspo: cryptographically weak secret generation (math/rand) for db and s3 credentialsEPSS 0.6%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 0.6%CVE-2026-5088HIGHApache::API::Password versions through 0.5.2 for Perl can generate insecure random values for saltsEPSS 0.6%