CVE-2023-6240
Estado: ModificadaMedia (6.5)—
A Marvin vulnerability side-channel leakage was found in the RSA decryption operation in the Linux Kernel. This issue may allow a network attacker to decrypt ciphertexts or forge signatures, limiting the services that use that private key.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
- Puntuación base: 6.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.97%
- Percentil entre todas las CVEs puntuadas: 61
- Fecha de la puntuación: 7/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (2)
CWE
- CWE-203
- CWE-203
Referencias
- https://access.redhat.com/errata/RHSA-2024:1881
- https://access.redhat.com/errata/RHSA-2024:1882
- https://access.redhat.com/errata/RHSA-2024:2758
- https://access.redhat.com/errata/RHSA-2024:3414
- https://access.redhat.com/errata/RHSA-2024:3421
- https://access.redhat.com/errata/RHSA-2024:3618
- https://access.redhat.com/errata/RHSA-2024:3627
- https://access.redhat.com/security/cve/CVE-2023-6240
- https://bugzilla.redhat.com/show_bug.cgi?id=2250843
- https://people.redhat.com/~hkario/marvin/
- https://securitypitfalls.wordpress.com/2023/10/16/experiment-with-side-channel-attacks-yourself/
- https://access.redhat.com/errata/RHSA-2024:1881
- https://access.redhat.com/errata/RHSA-2024:1882
- https://access.redhat.com/errata/RHSA-2024:2758
- https://access.redhat.com/errata/RHSA-2024:3414
- https://access.redhat.com/errata/RHSA-2024:3421
- https://access.redhat.com/errata/RHSA-2024:3618
- https://access.redhat.com/errata/RHSA-2024:3627
- https://access.redhat.com/security/cve/CVE-2023-6240
- https://bugzilla.redhat.com/show_bug.cgi?id=2250843
- https://people.redhat.com/~hkario/marvin/
- https://security.netapp.com/advisory/ntap-20240628-0002/
- https://securitypitfalls.wordpress.com/2023/10/16/experiment-with-side-channel-attacks-yourself/
JSON original (NVD)
Mostrar
{
"id": "CVE-2023-6240",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2023-6240",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "poc"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2024-11-07T21:11:40.911308Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "secalert@redhat.com",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 6.5,
"attackVector": "NETWORK",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N",
"integrityImpact": "LOW",
"userInteraction": "NONE",
"attackComplexity": "HIGH",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 4.2,
"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:H/PR:N/UI:N/S:U/C:H/I:L/A:N",
"integrityImpact": "LOW",
"userInteraction": "NONE",
"attackComplexity": "HIGH",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 4.2,
"exploitabilityScore": 2.2
}
]
},
"affected": [
{
"source": "secalert@redhat.com",
"affectedData": [
{
"cpes": [
"cpe:/a:redhat:enterprise_linux:8::realtime",
"cpe:/a:redhat:enterprise_linux:8::nfv"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 8",
"versions": [
{
"status": "unaffected",
"version": "0:4.18.0-553.5.1.rt7.346.el8_10",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "kernel-rt",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/o:redhat:enterprise_linux:8::baseos",
"cpe:/a:redhat:enterprise_linux:8::crb"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 8",
"versions": [
{
"status": "unaffected",
"version": "0:4.18.0-553.5.1.el8_10",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "kernel",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/o:redhat:enterprise_linux:9::baseos",
"cpe:/a:redhat:enterprise_linux:9::realtime",
"cpe:/a:redhat:enterprise_linux:9::nfv",
"cpe:/a:redhat:enterprise_linux:9::appstream",
"cpe:/a:redhat:enterprise_linux:9::crb"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 9",
"versions": [
{
"status": "unaffected",
"version": "0:5.14.0-427.16.1.el9_4",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "kernel",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/o:redhat:enterprise_linux:9::baseos",
"cpe:/a:redhat:enterprise_linux:9::realtime",
"cpe:/a:redhat:enterprise_linux:9::nfv",
"cpe:/a:redhat:enterprise_linux:9::appstream",
"cpe:/a:redhat:enterprise_linux:9::crb"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 9",
"versions": [
{
"status": "unaffected",
"version": "0:5.14.0-427.16.1.el9_4",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "kernel",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/o:redhat:rhel_eus:9.0::baseos",
"cpe:/a:redhat:rhel_eus:9.0::crb",
"cpe:/a:redhat:rhel_eus:9.0::appstream"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 9.0 Extended Update Support",
"versions": [
{
"status": "unaffected",
"version": "0:5.14.0-70.101.1.el9_0",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "kernel",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:rhel_eus:9.0::realtime",
"cpe:/a:redhat:rhel_eus:9.0::nfv"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 9.0 Extended Update Support",
"versions": [
{
"status": "unaffected",
"version": "0:5.14.0-70.101.1.rt21.173.el9_0",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "kernel-rt",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:rhel_eus:9.2::appstream",
"cpe:/o:redhat:rhel_eus:9.2::baseos",
"cpe:/a:redhat:rhel_eus:9.2::crb"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 9.2 Extended Update Support",
"versions": [
{
"status": "unaffected",
"version": "0:5.14.0-284.62.1.el9_2",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "kernel",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:rhel_eus:9.2::nfv",
"cpe:/a:redhat:rhel_eus:9.2::realtime"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 9.2 Extended Update Support",
"versions": [
{
"status": "unaffected",
"version": "0:5.14.0-284.62.1.rt14.347.el9_2",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "kernel-rt",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/o:redhat:enterprise_linux:6"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 6",
"packageName": "kernel",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:/o:redhat:enterprise_linux:7"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 7",
"packageName": "kernel",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:/o:redhat:enterprise_linux:7"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 7",
"packageName": "kernel-rt",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:/o:redhat:enterprise_linux:9"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 9",
"packageName": "kernel-rt",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
}
]
}
],
"published": "2024-02-04T14:15:47.787",
"references": [
{
"url": "https://access.redhat.com/errata/RHSA-2024:1881",
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/errata/RHSA-2024:1882",
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/errata/RHSA-2024:2758",
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/errata/RHSA-2024:3414",
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/errata/RHSA-2024:3421",
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/errata/RHSA-2024:3618",
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/errata/RHSA-2024:3627",
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/security/cve/CVE-2023-6240",
"tags": [
"Third Party Advisory"
],
"source": "secalert@redhat.com"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2250843",
"tags": [
"Issue Tracking"
],
"source": "secalert@redhat.com"
},
{
"url": "https://people.redhat.com/~hkario/marvin/",
"tags": [
"Third Party Advisory"
],
"source": "secalert@redhat.com"
},
{
"url": "https://securitypitfalls.wordpress.com/2023/10/16/experiment-with-side-channel-attacks-yourself/",
"tags": [
"Technical Description"
],
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/errata/RHSA-2024:1881",
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://access.redhat.com/errata/RHSA-2024:1882",
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://access.redhat.com/errata/RHSA-2024:2758",
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://access.redhat.com/errata/RHSA-2024:3414",
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://access.redhat.com/errata/RHSA-2024:3421",
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://access.redhat.com/errata/RHSA-2024:3618",
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://access.redhat.com/errata/RHSA-2024:3627",
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://access.redhat.com/security/cve/CVE-2023-6240",
"tags": [
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2250843",
"tags": [
"Issue Tracking"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://people.redhat.com/~hkario/marvin/",
"tags": [
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://security.netapp.com/advisory/ntap-20240628-0002/",
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://securitypitfalls.wordpress.com/2023/10/16/experiment-with-side-channel-attacks-yourself/",
"tags": [
"Technical Description"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Secondary",
"source": "secalert@redhat.com",
"description": [
{
"lang": "en",
"value": "CWE-203"
}
]
},
{
"type": "Secondary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-203"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A Marvin vulnerability side-channel leakage was found in the RSA decryption operation in the Linux Kernel. This issue may allow a network attacker to decrypt ciphertexts or forge signatures, limiting the services that use that private key."
},
{
"lang": "es",
"value": "Se encontró una fuga de canal lateral de vulnerabilidad de Marvin en la operación de descifrado RSA en el kernel de Linux. Este problema puede permitir que un atacante de red descifre textos cifrados o falsifique firmas, limitando los servicios que utilizan esa clave privada."
}
],
"lastModified": "2026-06-17T06:50:22.310",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "142AD0DD-4CF3-4D74-9442-459CE3347E3A"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F4CFF558-3C47-480D-A2F0-BABF26042943"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "7F6FB57C-2BC7-487C-96DD-132683AEB35D"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "secalert@redhat.com"
}