CVE-2025-49601

{"id": "CVE-2025-49601", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "cve@mitre.org", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.8, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 2.5, "exploitabilityScore": 2.2}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 2.5, "exploitabilityScore": 3.9}]}, "published": "2025-07-04T15:15:22.467", "references": [{"url": "https://github.com/Mbed-TLS/mbedtls-docs/blob/main/security-advisories/mbedtls-security-advisory-2025-06-4.md", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "cve@mitre.org", "description": [{"lang": "en", "value": "CWE-125"}]}], "descriptions": [{"lang": "en", "value": "In MbedTLS 3.3.0 before 3.6.4, mbedtls_lms_import_public_key does not check that the input buffer is at least 4 bytes before reading a 32-bit field, allowing a possible out-of-bounds read on truncated input. Specifically, an out-of-bounds read in mbedtls_lms_import_public_key allows context-dependent attackers to trigger a crash or limited adjacent-memory disclosure by supplying a truncated LMS (Leighton-Micali Signature) public-key buffer under four bytes. An LMS public key starts with a 4-byte type indicator. The function mbedtls_lms_import_public_key reads this type indicator before validating the size of its input."}, {"lang": "es", "value": "En MbedTLS 3.3.0 anterior a la 3.6.4, mbedtls_lms_import_public_key no comprueba que el b\u00fafer de entrada tenga al menos 4 bytes antes de leer un campo de 32 bits, lo que permite una posible lectura fuera de los l\u00edmites en una entrada truncada. Espec\u00edficamente, una lectura fuera de los l\u00edmites en mbedtls_lms_import_public_key permite a atacantes dependientes del contexto provocar un fallo o una divulgaci\u00f3n limitada de memoria adyacente al proporcionar un b\u00fafer de clave p\u00fablica LMS (Leighton-Micali Signature) truncado de menos de cuatro bytes. Una clave p\u00fablica LMS comienza con un indicador de tipo de 4 bytes. La funci\u00f3n mbedtls_lms_import_public_key lee este indicador de tipo antes de validar el tama\u00f1o de su entrada."}], "lastModified": "2025-07-17T16:00:02.243", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "670EA016-8FA4-4F42-A180-11243DCCD155", "versionEndExcluding": "3.6.4", "versionStartIncluding": "3.3.0"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}