CVE-2025-54885

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{"affected": [{"affectedData": [{"product": "thinbus-srp-npm", "vendor": "simbo1905", "versions": [{"status": "affected", "version": "< 2.0.1"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Thinbus Javascript Secure Remote Password is a browser SRP6a implementation for zero-knowledge password authentication. In versions 2.0.0 and below, a protocol compliance bug causes the client to generate a fixed 252 bits of entropy instead of the intended bit length of the safe prime (defaulted to 2048 bits). The client public value is being generated from a private value that is 4 bits below the specification. This reduces the protocol's designed security margin it is now practically exploitable. The servers full sized 2048 bit random number is used to create the shared session key and password proof. This is fixed in version 2.0.1."}, {"lang": "es", "value": "Thinbus Javascript Secure Remote Password es una implementaci\u00f3n de SRP6a para navegadores que permite la autenticaci\u00f3n de contrase\u00f1as de conocimiento cero. En las versiones 2.0.0 y anteriores, un error de cumplimiento del protocolo provoca que el cliente genere una entrop\u00eda fija de 252 bits en lugar de la longitud de bits prevista para el primo seguro (predeterminada en 2048 bits). El valor p\u00fablico del cliente se genera a partir de un valor privado 4 bits por debajo de la especificaci\u00f3n. Esto reduce el margen de seguridad dise\u00f1ado para el protocolo y ahora es pr\u00e1cticamente explotable. El n\u00famero aleatorio completo de 2048 bits del servidor se utiliza para crear la clave de sesi\u00f3n compartida y la prueba de contrase\u00f1a. Esto se solucion\u00f3 en la versi\u00f3n 2.0.1."}], "id": "CVE-2025-54885", "lastModified": "2026-06-17T09:40:52.010", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "HIGH", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.9, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "UNREPORTED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-54885", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2025-08-07T14:13:10.131679Z", "version": "2.0.3"}}]}, "published": "2025-08-07T01:15:26.693", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/simbo1905/thinbus-srp-npm/issues/28"}, {"source": "security-advisories@github.com", "url": "https://github.com/simbo1905/thinbus-srp-npm/pull/30/commits/4aeaea2366e090765a8204059c7bcf3616438d31"}, {"source": "security-advisories@github.com", "url": "https://github.com/simbo1905/thinbus-srp-npm/security/advisories/GHSA-8q6v-474h-whgg"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-331"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

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