CVE-2025-66565

{"id": "CVE-2025-66565", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-66565", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2025-12-09T14:16:58.759199Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}], "cvssMetricV40": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 9.3, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "LOW", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "gofiber", "product": "utils", "versions": [{"status": "affected", "version": "github.com/gofiber/utils <= 1.2.0"}, {"status": "affected", "version": "github.com/gofiber/utils/v2 < 2.0.0-rc.4"}]}]}], "published": "2025-12-09T16:18:21.097", "references": [{"url": "https://github.com/gofiber/utils/commit/6c6cf047032b9c8dff43d29f990b4b10e9b02d47", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/gofiber/utils/security/advisories/GHSA-m98w-cqp3-qcqr", "tags": ["Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/gofiber/utils/security/advisories/GHSA-m98w-cqp3-qcqr", "tags": ["Vendor Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-252"}, {"lang": "en", "value": "CWE-331"}, {"lang": "en", "value": "CWE-338"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-252"}, {"lang": "en", "value": "CWE-338"}]}], "descriptions": [{"lang": "en", "value": "Fiber Utils is a collection of common functions created for Fiber. In versions 2.0.0-rc.3 and below, when the system's cryptographic random number generator (crypto/rand) fails, both functions silently fall back to returning predictable UUID values, including the zero UUID \"00000000-0000-0000-0000-000000000000\". The vulnerability occurs through two related but distinct failure paths, both ultimately caused by crypto/rand.Read() failures, compromising the security of all Fiber applications using these functions for security-critical operations. This issue is fixed in version 2.0.0-rc.4."}, {"lang": "es", "value": "Fiber Utils es una colecci\u00f3n de funciones comunes creadas para Fiber. En las versiones 2.0.0-rc.3 e inferiores, cuando el generador de n\u00fameros aleatorios criptogr\u00e1ficos del sistema (crypto/rand) falla, ambas funciones recurren silenciosamente a devolver valores UUID predecibles, incluyendo el UUID cero '00000000-0000-0000-0000-000000000000'. La vulnerabilidad ocurre a trav\u00e9s de dos rutas de fallo relacionadas pero distintas, ambas causadas en \u00faltima instancia por fallos de crypto/rand.Read(), comprometiendo la seguridad de todas las aplicaciones Fiber que utilizan estas funciones para operaciones cr\u00edticas de seguridad. Este problema est\u00e1 solucionado en la versi\u00f3n 2.0.0-rc.4."}], "lastModified": "2026-10-07T20:10:01.970", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:gofiber:utils:*:*:*:*:*:go:*:*", "vulnerable": true, "matchCriteriaId": "0DBDBC08-F082-4844-85C8-67FDA50F1D96", "versionEndIncluding": "1.2.0"}, {"criteria": "cpe:2.3:a:gofiber:utils:2.0.0:beta1:*:*:*:go:*:*", "vulnerable": true, "matchCriteriaId": "3CF06202-3EB0-4193-8AB9-E47C120CAE7A"}, {"criteria": "cpe:2.3:a:gofiber:utils:2.0.0:beta10:*:*:*:go:*:*", "vulnerable": true, "matchCriteriaId": "CF306733-FDF8-434D-BBE7-007A6FBB2609"}, {"criteria": "cpe:2.3:a:gofiber:utils:2.0.0:beta11:*:*:*:go:*:*", "vulnerable": true, "matchCriteriaId": "C941EF0D-AF47-4BD6-AC68-29F534E78881"}, {"criteria": "cpe:2.3:a:gofiber:utils:2.0.0:beta12:*:*:*:go:*:*", "vulnerable": true, "matchCriteriaId": "830BFD1F-2352-4118-B757-1DC00DCAED64"}, {"criteria": "cpe:2.3:a:gofiber:utils:2.0.0:beta13:*:*:*:go:*:*", "vulnerable": true, "matchCriteriaId": "A047A059-EF1D-48C7-B514-DF7B49538133"}, {"criteria": "cpe:2.3:a:gofiber:utils:2.0.0:beta14:*:*:*:go:*:*", "vulnerable": true, "matchCriteriaId": "EB8029EF-619F-48C5-BA13-E67A78DA3240"}, {"criteria": "cpe:2.3:a:gofiber:utils:2.0.0:beta2:*:*:*:go:*:*", "vulnerable": true, "matchCriteriaId": "244F7B18-D2DA-4F6B-A46B-22B91478E5C3"}, {"criteria": "cpe:2.3:a:gofiber:utils:2.0.0:beta3:*:*:*:go:*:*", "vulnerable": true, "matchCriteriaId": "84145762-B2F9-474F-90DE-0D124EB25376"}, {"criteria": "cpe:2.3:a:gofiber:utils:2.0.0:beta4:*:*:*:go:*:*", "vulnerable": true, "matchCriteriaId": "91DCCAA4-F9C6-4380-AAB7-08954DA3E88D"}, {"criteria": "cpe:2.3:a:gofiber:utils:2.0.0:beta5:*:*:*:go:*:*", "vulnerable": true, "matchCriteriaId": "64BE0DDC-6247-4C85-BBA0-4BC4F7670CDB"}, {"criteria": "cpe:2.3:a:gofiber:utils:2.0.0:beta6:*:*:*:go:*:*", "vulnerable": true, "matchCriteriaId": "7E6AC663-DFA9-4E13-BB68-BD22318DCAB6"}, {"criteria": "cpe:2.3:a:gofiber:utils:2.0.0:beta7:*:*:*:go:*:*", "vulnerable": true, "matchCriteriaId": "F5770BB7-1D1F-40D5-ACFB-4107C5D02719"}, {"criteria": "cpe:2.3:a:gofiber:utils:2.0.0:beta8:*:*:*:go:*:*", "vulnerable": true, "matchCriteriaId": "E37F4EC0-AAD8-4C85-9373-3FB5F51D8F52"}, {"criteria": "cpe:2.3:a:gofiber:utils:2.0.0:beta9:*:*:*:go:*:*", "vulnerable": true, "matchCriteriaId": "3817F39A-4874-4FF3-B4F9-ACF24E185BC2"}, {"criteria": "cpe:2.3:a:gofiber:utils:2.0.0:rc1:*:*:*:go:*:*", "vulnerable": true, "matchCriteriaId": "37B2432A-5B45-4F42-A120-86BBD5EEF5EC"}, {"criteria": "cpe:2.3:a:gofiber:utils:2.0.0:rc2:*:*:*:go:*:*", "vulnerable": true, "matchCriteriaId": "765A2191-9DA4-4D9D-AE26-EB53FCCE76AD"}, {"criteria": "cpe:2.3:a:gofiber:utils:2.0.0:rc3:*:*:*:go:*:*", "vulnerable": true, "matchCriteriaId": "31281C49-0A9A-4008-8458-3DD0A9F9B016"}, {"criteria": "cpe:2.3:a:gofiber:utils:2.0.0:rc4:*:*:*:go:*:*", "vulnerable": true, "matchCriteriaId": "568DB697-4E86-4C33-AD1A-5E44E23D277F"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}