CVE-2023-52558
Estado: AnalizadaAlta (7.5)—
In OpenBSD 7.4 before errata 002 and OpenBSD 7.3 before errata 019, a network buffer that had to be split at certain length that could crash the kernel after receiving specially crafted escape sequences.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 7.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.70%
- Percentil entre todas las CVEs puntuadas: 52
- Fecha de la puntuación: 6/10/2026
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 (1)
CWE
- CWE-131
Referencias
- https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/019_msplit.patch.sig
- https://ftp.openbsd.org/pub/OpenBSD/patches/7.4/common/002_msplit.patch.sig
- https://github.com/openbsd/src/commit/7b4d35e0a60ba1dd4daf4b1c2932020a22463a89
- https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/019_msplit.patch.sig
- https://ftp.openbsd.org/pub/OpenBSD/patches/7.4/common/002_msplit.patch.sig
- https://github.com/openbsd/src/commit/7b4d35e0a60ba1dd4daf4b1c2932020a22463a89
JSON original (NVD)
Mostrar
{
"id": "CVE-2023-52558",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2023-52558",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2024-11-19T21:41:24.595292Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.5,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "NONE"
},
"impactScore": 3.6,
"exploitabilityScore": 3.9
}
]
},
"affected": [
{
"source": "9119a7d8-5eab-497f-8521-727c672e3725",
"affectedData": [
{
"repo": "https://github.com/openbsd/src/",
"vendor": "OpenBSD",
"product": "OpenBSD",
"versions": [
{
"status": "affected",
"version": "7.3 ",
"lessThan": "7.3 errata 019",
"versionType": "custom"
},
{
"status": "affected",
"version": "7.4",
"lessThan": "7.4 errata 002",
"versionType": "custom"
}
],
"defaultStatus": "affected"
}
]
},
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"affectedData": [
{
"cpes": [
"cpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*"
],
"vendor": "openbsd",
"product": "openbsd",
"versions": [
{
"status": "affected",
"version": "7.3",
"lessThan": "7.3_errata_019",
"versionType": "custom"
},
{
"status": "affected",
"version": "7.4",
"lessThan": "7.4_errata_002",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
}
]
}
],
"published": "2024-03-01T17:15:07.330",
"references": [
{
"url": "https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/019_msplit.patch.sig",
"tags": [
"Patch"
],
"source": "9119a7d8-5eab-497f-8521-727c672e3725"
},
{
"url": "https://ftp.openbsd.org/pub/OpenBSD/patches/7.4/common/002_msplit.patch.sig",
"tags": [
"Patch"
],
"source": "9119a7d8-5eab-497f-8521-727c672e3725"
},
{
"url": "https://github.com/openbsd/src/commit/7b4d35e0a60ba1dd4daf4b1c2932020a22463a89",
"tags": [
"Patch"
],
"source": "9119a7d8-5eab-497f-8521-727c672e3725"
},
{
"url": "https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/019_msplit.patch.sig",
"tags": [
"Patch"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://ftp.openbsd.org/pub/OpenBSD/patches/7.4/common/002_msplit.patch.sig",
"tags": [
"Patch"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://github.com/openbsd/src/commit/7b4d35e0a60ba1dd4daf4b1c2932020a22463a89",
"tags": [
"Patch"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Secondary",
"source": "9119a7d8-5eab-497f-8521-727c672e3725",
"description": [
{
"lang": "en",
"value": "CWE-131"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In OpenBSD 7.4 before errata 002 and OpenBSD 7.3 before errata 019, a network buffer that had to be split at certain length that could crash the kernel after receiving specially crafted escape sequences."
},
{
"lang": "es",
"value": "En OpenBSD 7.4 anterior a la errata 002 y OpenBSD 7.3 anterior a la errata 019, un búfer de red que tenía que dividirse en cierta longitud podía bloquear el kernel después de recibir secuencias de escape especialmente manipuladas."
}
],
"lastModified": "2026-06-17T06:43:01.303",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "131B4208-6843-40D3-8818-159D1204BD0E",
"versionEndExcluding": "7.3"
},
{
"criteria": "cpe:2.3:o:openbsd:openbsd:7.3:-:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "7BAA0C9B-7CEA-4647-809F-027EB34C142E"
},
{
"criteria": "cpe:2.3:o:openbsd:openbsd:7.3:errata_001:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B3CC37B8-46C0-407B-8DE4-2B5BC36BA969"
},
{
"criteria": "cpe:2.3:o:openbsd:openbsd:7.3:errata_002:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "D53FE3CA-1A90-4783-8AC2-C0B4CF6F052D"
},
{
"criteria": "cpe:2.3:o:openbsd:openbsd:7.3:errata_003:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "9C32DD2B-BBE0-4031-B105-743E4058B4A1"
},
{
"criteria": "cpe:2.3:o:openbsd:openbsd:7.3:errata_004:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "3F481F84-81C2-4E5F-BD60-4C46CD3DD603"
},
{
"criteria": "cpe:2.3:o:openbsd:openbsd:7.3:errata_005:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "DCAE527B-1176-4759-B903-59A72245517B"
},
{
"criteria": "cpe:2.3:o:openbsd:openbsd:7.3:errata_006:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "90AFDC54-DCAD-46F5-8198-3632335D5529"
},
{
"criteria": "cpe:2.3:o:openbsd:openbsd:7.3:errata_007:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C7289DE0-7A7C-4535-BCA8-23D882468D28"
},
{
"criteria": "cpe:2.3:o:openbsd:openbsd:7.3:errata_008:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "40791FF0-EFA3-4471-BCEB-0E1F36ABF973"
},
{
"criteria": "cpe:2.3:o:openbsd:openbsd:7.3:errata_009:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "2AE8017A-F84D-4A8E-BAF0-8AC795D74FFC"
},
{
"criteria": "cpe:2.3:o:openbsd:openbsd:7.3:errata_010:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "FFFC349B-AA6F-4286-8440-699D1F8A934A"
},
{
"criteria": "cpe:2.3:o:openbsd:openbsd:7.3:errata_011:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B5AD12A6-74D4-4696-8126-402E61995D2C"
},
{
"criteria": "cpe:2.3:o:openbsd:openbsd:7.3:errata_012:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A9921E2D-DC9B-46FB-A01F-540C4B721D50"
},
{
"criteria": "cpe:2.3:o:openbsd:openbsd:7.3:errata_013:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "CEFF0DA3-7CF7-42EB-9AA8-914EFD83466A"
},
{
"criteria": "cpe:2.3:o:openbsd:openbsd:7.3:errata_014:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "2745D88C-769F-476C-AF70-29EDF609DC55"
},
{
"criteria": "cpe:2.3:o:openbsd:openbsd:7.3:errata_015:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "9E14AA44-11A5-466D-8C56-C0618F99AC51"
},
{
"criteria": "cpe:2.3:o:openbsd:openbsd:7.3:errata_016:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "780A311D-A244-41A9-B5DB-C4B551F33C3D"
},
{
"criteria": "cpe:2.3:o:openbsd:openbsd:7.3:errata_017:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C5EE5EE8-0CFB-488C-B4C4-20E3D86C19F1"
},
{
"criteria": "cpe:2.3:o:openbsd:openbsd:7.3:errata_018:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "7D2ABF3D-72F5-49BE-B2D4-B38BFA359A4D"
},
{
"criteria": "cpe:2.3:o:openbsd:openbsd:7.4:-:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "AC3B964B-B0DA-4ED4-92CA-22CA55FB1799"
},
{
"criteria": "cpe:2.3:o:openbsd:openbsd:7.4:errata_001:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "6AFCBC1B-71F7-48E0-B276-8FDC3150E6CD"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "9119a7d8-5eab-497f-8521-727c672e3725"
}