CVE-2020-7457
Estado: ModificadaAlta (8.1)—💥 Exploit
In FreeBSD 12.1-STABLE before r359565, 12.1-RELEASE before p7, 11.4-STABLE before r362975, 11.4-RELEASE before p1, and 11.3-RELEASE before p11, missing synchronization in the IPV6_2292PKTOPTIONS socket option set handler contained a race condition allowing a malicious application to modify memory after being freed, possibly resulting in code execution.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 8.1
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 33%
- Percentil entre todas las CVEs puntuadas: 98
- 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).
💥 Exploits públicos
Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.
- Módulo de Metasploit (exploit fiable y al alcance de cualquiera) · FreeBSD ip6_setpktopt Use-After-Free Privilege Escalation
Tecnologías afectadas (1)
CWE
- CWE-362, CWE-416, CWE-662
Referencias
- http://packetstormsecurity.com/files/158695/FreeBSD-ip6_setpktopt-Use-After-Free-Privilege-Escalation.html
- https://security.FreeBSD.org/advisories/FreeBSD-SA-20:20.ipv6.asc
- https://security.netapp.com/advisory/ntap-20200724-0002/
- http://packetstormsecurity.com/files/158695/FreeBSD-ip6_setpktopt-Use-After-Free-Privilege-Escalation.html
- https://security.FreeBSD.org/advisories/FreeBSD-SA-20:20.ipv6.asc
- https://security.netapp.com/advisory/ntap-20200724-0002/
JSON original (NVD)
Mostrar
{
"id": "CVE-2020-7457",
"cveTags": [],
"metrics": {
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 6.8,
"accessVector": "NETWORK",
"vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
"authentication": "NONE",
"integrityImpact": "PARTIAL",
"accessComplexity": "MEDIUM",
"availabilityImpact": "PARTIAL",
"confidentialityImpact": "PARTIAL"
},
"acInsufInfo": false,
"impactScore": 6.4,
"baseSeverity": "MEDIUM",
"obtainAllPrivilege": false,
"exploitabilityScore": 8.6,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 8.1,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "HIGH",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 2.2
}
]
},
"affected": [
{
"source": "secteam@freebsd.org",
"affectedData": [
{
"vendor": "n/a",
"product": "FreeBSD",
"versions": [
{
"status": "affected",
"version": "FreeBSD 12.1-RELEASE before p7, 11.4-RELEASE before p1, 11.3-RELEASE before p11"
}
]
}
]
}
],
"published": "2020-07-09T14:15:10.917",
"references": [
{
"url": "http://packetstormsecurity.com/files/158695/FreeBSD-ip6_setpktopt-Use-After-Free-Privilege-Escalation.html",
"tags": [
"Exploit",
"Third Party Advisory",
"VDB Entry"
],
"source": "secteam@freebsd.org"
},
{
"url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-20:20.ipv6.asc",
"tags": [
"Patch",
"Vendor Advisory"
],
"source": "secteam@freebsd.org"
},
{
"url": "https://security.netapp.com/advisory/ntap-20200724-0002/",
"tags": [
"Third Party Advisory"
],
"source": "secteam@freebsd.org"
},
{
"url": "http://packetstormsecurity.com/files/158695/FreeBSD-ip6_setpktopt-Use-After-Free-Privilege-Escalation.html",
"tags": [
"Exploit",
"Third Party Advisory",
"VDB Entry"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-20:20.ipv6.asc",
"tags": [
"Patch",
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://security.netapp.com/advisory/ntap-20200724-0002/",
"tags": [
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-362"
},
{
"lang": "en",
"value": "CWE-416"
},
{
"lang": "en",
"value": "CWE-662"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In FreeBSD 12.1-STABLE before r359565, 12.1-RELEASE before p7, 11.4-STABLE before r362975, 11.4-RELEASE before p1, and 11.3-RELEASE before p11, missing synchronization in the IPV6_2292PKTOPTIONS socket option set handler contained a race condition allowing a malicious application to modify memory after being freed, possibly resulting in code execution."
},
{
"lang": "es",
"value": "En FreeBSD versiones 12.1-ESTABLE anteriores a r359565, versiones 12.1-RELEASE anteriores a p7, versiones 11.4-ESTABLE anteriores a r362975, versiones 11.4-RELEASE anteriores a p1 y 11.3-RELEASE anteriores a p11, una falta de sincronización en el manejador del conjunto de opciones del socket IPV6_2292PKTOPTIONS contenía una condición de carrera que permitía una aplicación maliciosa para modificar la memoria después de ser liberada, resultando posiblemente en una ejecución de código"
}
],
"lastModified": "2026-06-17T03:24:49.120",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:freebsd:freebsd:11.3:-:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F35957CE-AF9F-40CA-BDD1-FA6A0E73783F"
},
{
"criteria": "cpe:2.3:o:freebsd:freebsd:11.3:p1:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "EA929713-B797-494A-853D-C121D9D69519"
},
{
"criteria": "cpe:2.3:o:freebsd:freebsd:11.3:p10:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B87AF171-95AC-4DDA-8D94-694F85638B46"
},
{
"criteria": "cpe:2.3:o:freebsd:freebsd:11.3:p2:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "3C3D8EDC-91D3-45B2-AC1D-EF4346D4A714"
},
{
"criteria": "cpe:2.3:o:freebsd:freebsd:11.3:p3:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "EA5006FF-06A5-4D95-BF5B-29F26248D11F"
},
{
"criteria": "cpe:2.3:o:freebsd:freebsd:11.3:p4:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A705031B-FD63-4076-B92E-E826E11D7111"
},
{
"criteria": "cpe:2.3:o:freebsd:freebsd:11.3:p5:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "11C1EFB1-68E5-45F4-A7E1-744574F290D1"
},
{
"criteria": "cpe:2.3:o:freebsd:freebsd:11.3:p6:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "25F649A7-9265-4552-8934-BCE083363982"
},
{
"criteria": "cpe:2.3:o:freebsd:freebsd:11.3:p7:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F202C856-5B95-4796-AC4A-1F210E7BAB8F"
},
{
"criteria": "cpe:2.3:o:freebsd:freebsd:11.3:p8:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "9419C866-C478-4CDE-A9A1-E592D8FF0933"
},
{
"criteria": "cpe:2.3:o:freebsd:freebsd:11.3:p9:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "2B6DFC23-A7A1-431A-9AD9-A820579F95F0"
},
{
"criteria": "cpe:2.3:o:freebsd:freebsd:11.4:-:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "4A865EA1-01D7-4E5A-9D13-80780F8A9D7A"
},
{
"criteria": "cpe:2.3:o:freebsd:freebsd:11.4:beta1:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B80FBD1B-D03E-4408-9150-2F86FAF7F1D7"
},
{
"criteria": "cpe:2.3:o:freebsd:freebsd:11.4:rc2:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "0D427061-B399-47BA-865D-9FAB315210CF"
},
{
"criteria": "cpe:2.3:o:freebsd:freebsd:12.1:-:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "BD730B6A-F123-4685-ACB3-4F20AAAB77F3"
},
{
"criteria": "cpe:2.3:o:freebsd:freebsd:12.1:p1:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "508150E3-2C0C-4EEB-BFC9-BB5CEB404C06"
},
{
"criteria": "cpe:2.3:o:freebsd:freebsd:12.1:p2:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B5D692EF-A5D7-430E-91BA-4CD137343B66"
},
{
"criteria": "cpe:2.3:o:freebsd:freebsd:12.1:p3:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "D50C60A7-4C9F-4636-92E9-9F5B8B01BE5B"
},
{
"criteria": "cpe:2.3:o:freebsd:freebsd:12.1:p4:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "6C49F6C7-A740-42F4-93BB-512CBF334516"
},
{
"criteria": "cpe:2.3:o:freebsd:freebsd:12.1:p5:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "402740C4-5B55-423F-BAD2-F742E1E21ADC"
},
{
"criteria": "cpe:2.3:o:freebsd:freebsd:12.1:p6:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "9DCAA10A-C612-45E0-84B7-55897F49D65E"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "secteam@freebsd.org"
}