2024-12-08 03:06:42 +00:00

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{
"id": "CVE-2021-36647",
"sourceIdentifier": "cve@mitre.org",
"published": "2023-01-17T21:15:10.880",
"lastModified": "2024-11-21T06:13:53.947",
"vulnStatus": "Modified",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Use of a Broken or Risky Cryptographic Algorithm in the function mbedtls_mpi_exp_mod() in lignum.c in Mbed TLS Mbed TLS all versions before 3.0.0, 2.27.0 or 2.16.11 allows attackers with access to precise enough timing and memory access information (typically an untrusted operating system attacking a secure enclave such as SGX or the TrustZone secure world) to recover the private keys used in RSA."
},
{
"lang": "es",
"value": "Uso de un algoritmo criptogr\u00e1fico roto o riesgoso en la funci\u00f3n mbedtls_mpi_exp_mod() en lignum.c en Mbed TLS Mbed TLS todas las versiones anteriores a 3.0.0, 2.27.0 o 2.16.11 permite a los atacantes acceder a informaci\u00f3n de tiempo y acceso a memoria suficientemente precisa (normalmente un sistema operativo que no es de confianza que ataca un enclave seguro como SGX o el mundo seguro TrustZone) para recuperar las claves privadas utilizadas en RSA."
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "nvd@nist.gov",
"type": "Primary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
"baseScore": 4.7,
"baseSeverity": "MEDIUM",
"attackVector": "LOCAL",
"attackComplexity": "HIGH",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"availabilityImpact": "NONE"
},
"exploitabilityScore": 1.0,
"impactScore": 3.6
}
]
},
"weaknesses": [
{
"source": "nvd@nist.gov",
"type": "Primary",
"description": [
{
"lang": "en",
"value": "CWE-327"
}
]
}
],
"configurations": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*",
"versionEndExcluding": "2.16.11",
"matchCriteriaId": "E24E3CA8-CBFE-4C75-A3C0-1B0D8C3B694B"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.17.0",
"versionEndExcluding": "2.27.0",
"matchCriteriaId": "32B8405B-52A8-485A-85D2-D696626DBE19"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.28.0",
"versionEndExcluding": "3.0.0",
"matchCriteriaId": "539125FA-10D5-41EF-B5D7-93B809231A33"
}
]
}
]
}
],
"references": [
{
"url": "https://github.com/ARMmbed/mbedtls/releases/",
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory"
]
},
{
"url": "https://kouzili.com/Load-Step.pdf",
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory"
]
},
{
"url": "https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2021-07-1",
"source": "cve@mitre.org",
"tags": [
"Vendor Advisory"
]
},
{
"url": "https://github.com/ARMmbed/mbedtls/releases/",
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
]
},
{
"url": "https://kouzili.com/Load-Step.pdf",
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
]
},
{
"url": "https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2021-07-1",
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
]
}
]
}