CVE-2024-56375
An integer underflow was discovered in Fort 1.6.3 and 1.6.4 before 1.6.5. A malicious RPKI repository that descends from a (trusted) Trust Anchor can serve (via rsync or RRDP) a Manifest RPKI object containing an empty fileList. Fort dereferences (and, shortly afterwards, writes to) this array during a shuffle attempt, before the validation that would normally reject it when empty. This out-of-bounds access is caused by an integer underflow that causes the surrounding loop to iterate infinitely. Because the product is permanently stuck attempting to overshuffle an array that doesn't actually exist, a crash is nearly guaranteed.
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: 0.47%
- Percentil entre todas las CVEs puntuadas: 39
- 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).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1190Exploit Public-Facing Applicationinitial access60 % - Impacto principal
T1499Endpoint Denial of Serviceimpact55 %
Inferido por reglas deterministas a partir del vector CVSS y la CWE. Solo orientativo.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (1)
CWE
- CWE-191
- CWE-191
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2024-56375",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2024-56375",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2024-12-24T02:12:07.458757Z"
}
}
],
"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": "cve@mitre.org",
"affectedData": [
{
"vendor": "nicmx",
"product": "fort-validator",
"versions": [
{
"status": "affected",
"version": "1.6.3",
"lessThan": "1.6.5",
"versionType": "semver"
}
],
"defaultStatus": "unaffected"
}
]
}
],
"published": "2024-12-22T23:15:06.613",
"references": [
{
"url": "https://github.com/NICMx/FORT-validator/issues/154",
"tags": [
"Issue Tracking",
"Vendor Advisory"
],
"source": "cve@mitre.org"
},
{
"url": "https://nicmx.github.io/FORT-validator/CVE.html",
"tags": [
"Vendor Advisory"
],
"source": "cve@mitre.org"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Secondary",
"source": "cve@mitre.org",
"description": [
{
"lang": "en",
"value": "CWE-191"
}
]
},
{
"type": "Secondary",
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"description": [
{
"lang": "en",
"value": "CWE-191"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "An integer underflow was discovered in Fort 1.6.3 and 1.6.4 before 1.6.5. A malicious RPKI repository that descends from a (trusted) Trust Anchor can serve (via rsync or RRDP) a Manifest RPKI object containing an empty fileList. Fort dereferences (and, shortly afterwards, writes to) this array during a shuffle attempt, before the validation that would normally reject it when empty. This out-of-bounds access is caused by an integer underflow that causes the surrounding loop to iterate infinitely. Because the product is permanently stuck attempting to overshuffle an array that doesn't actually exist, a crash is nearly guaranteed."
},
{
"lang": "es",
"value": "Se descubrió un desbordamiento de enteros en Fort 1.6.3 y 1.6.4 antes de 1.6.5. Un repositorio RPKI malicioso que desciende de un Trust Anchor (confiable) puede servir (a través de rsync o RRDP) un objeto RPKI de manifiesto que contiene una lista de archivos vacía. Fort desreferencia (y, poco después, escribe en) esta matriz durante un intento de mezcla, antes de la validación que normalmente la rechazaría si estuviera vacía. Este acceso fuera de los límites se debe a un desbordamiento de enteros que hace que el bucle circundante se repita infinitamente. Debido a que el producto está bloqueado permanentemente al intentar mezclar una matriz que en realidad no existe, es casi seguro que se produzca un bloqueo."
}
],
"lastModified": "2026-06-17T08:12:08.170",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:nicmx:fort_validator:1.6.3:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "2E9FD78E-6B64-44C5-B008-E8C80D24E293"
},
{
"criteria": "cpe:2.3:a:nicmx:fort_validator:1.6.4:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "AE6BA852-9F48-4736-AC29-B6B4E48974EF"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "cve@mitre.org"
}