Falhas do tipo CWE-338

144 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-2024-29868CRITICALApache StreamPipes, Apache StreamPipes: Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) in Recovery Token GenerationEPSS 6.0%CVE-2024-31497MEDIUMIn PuTTY 0.68 through 0.80 before 0.81, biased ECDSA nonce generation allows an attacker to recover a user's NIST P-521 secret key via a quiEPSS 5.8%CVE-2021-43799HIGHRabbitMQ exposes ports with weak default secrets in Zulip ServerEPSS 5.4%CVE-2008-3280—It was found that various OpenID Providers (OPs) had TLS Server Certificates that used weak keys, as a result of the Debian Predictable RandEPSS 4.0%CVE-2017-9230HIGHThe Bitcoin Proof-of-Work algorithm does not consider a certain attack methodology related to 80-byte block headers with a variety of initiaEPSS 3.3%CVE-2021-3538—A flaw was found in github.com/satori/go.uuid in versions from commit 0ef6afb2f6cdd6cdaeee3885a95099c63f18fc8c to d91630c8510268e75203009fe7EPSS 2.3%CVE-2022-35255CRITICALA weak randomness in WebCrypto keygen vulnerability exists in Node.js 18 due to a change with EntropySource() in SecretKeyGenTraits::DoKeyGeEPSS 1.9%CVE-2019-5440—Use of cryptographically weak PRNG in the password recovery token generation of Revive Adserver < v4.2.1 causes a potential authentication bEPSS 1.6%CVE-2014-2362—OleumTech WIO Use of Cryptographically Weak Pseudo-Random Number GeneratorEPSS 1.6%CVE-2022-29245MEDIUMWeak private key generation in SSH.NETEPSS 1.4%CVE-2024-38353MEDIUMCodiMD - Missing Image Access Controls and Unauthorized Image AccessEPSS 1.2%CVE-2022-20817HIGHCisco IP Phone Duplicate Key VulnerabilityEPSS 1.1%CVE-2022-36045CRITICALAccount takeover via cryptographically weak PRNG in NodeBB ForumEPSS 1.1%CVE-2021-3678HIGHUse of Cryptographically Weak Pseudo-Random Number Generator (PRNG) in star7th/showdocEPSS 1.1%CVE-2011-4574—PolarSSL versions prior to v1.1 use the HAVEGE random number generation algorithm. At its heart, this uses timing information based on the pEPSS 1.1%CVE-2023-31290MEDIUMTrust Wallet Core before 3.1.1, as used in the Trust Wallet browser extension before 0.0.183, allows theft of funds because the entropy is 3EPSS 1.0%CVE-2021-34430—Eclipse TinyDTLS through 0.9-rc1 relies on the rand function in the C library, which makes it easier for remote attackers to compute the masEPSS 1.0%CVE-2024-40762CRITICALUse of Cryptographically Weak Pseudo-Random Number Generator (PRNG) in the SonicOS SSLVPN authentication token generator that, in certain caEPSS 1.0%CVE-2023-45237MEDIUMUse of a Weak PseudoRandom Number Generator in EDK II Network PackageEPSS 1.0%CVE-2023-48224HIGHCryptographically Weak Generation of One-Time Codes for Identity Verification in ethyca-fidesEPSS 1.0%