CVE-2013-7372

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classlib/modules/security/src/main/java/common/org/apache/harmony/security/provider/crypto/SHA1PRNG_SecureRandomImpl.java en la implementaci\u00f3n SecureRandom en Apache Harmony hasta 6.0M3, utilizado en Java Cryptography Architecture (JCA) en Android anterior a 4.4 y otros productos, cuando el usuario no proporciona una semilla, la funci\u00f3n usa utiliza un valor de desplazamiento incorrecto, lo que facilita a un atacante poder anular los mecanismos de protecci\u00f3n criptogr\u00e1fica mediante el aprovechamiento de la previsibilidad PRNG resultante, tal y como se demostr\u00f3 activamente contra las aplicaciones Bitcoin Wallet en agosto 2013."}], "id": "CVE-2013-7372", "lastModified": "2026-06-17T00:01:51.020", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2014-04-29T20:55:08.933", "references": [{"source": "cve@mitre.org", "tags": ["Patch"], "url": "http://android-developers.blogspot.com.au/2013/08/some-securerandom-thoughts.html"}, {"source": "cve@mitre.org", "tags": ["Exploit"], "url": "http://www.nds.rub.de/media/nds/veroeffentlichungen/2013/03/25/paper_2.pdf"}, {"source": "cve@mitre.org", "tags": ["Patch"], "url": "https://android.googlesource.com/platform/libcore/+/kitkat-release/luni/src/main/java/org/apache/harmony/security/provider/crypto/SHA1PRNG_SecureRandomImpl.java"}, {"source": "cve@mitre.org", "url": "https://bitcoin.org/en/alert/2013-08-11-android"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": 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