CVE-2018-11236
Estado: ModificadaCrítica (9.8)—
stdlib/canonicalize.c in the GNU C Library (aka glibc or libc6) 2.27 and earlier, when processing very long pathname arguments to the realpath function, could encounter an integer overflow on 32-bit architectures, leading to a stack-based buffer overflow and, potentially, arbitrary code execution.
CVSS
- Versión: 3.0
- Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 9.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 7.05%
- Percentil entre todas las CVEs puntuadas: 94
- Fecha de la puntuación: 2/10/2026
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 (9)
CWE
- CWE-190, CWE-787
Referencias
- http://www.securityfocus.com/bid/104255
- https://access.redhat.com/errata/RHBA-2019:0327
- https://access.redhat.com/errata/RHSA-2018:3092
- https://security.netapp.com/advisory/ntap-20190329-0001/
- https://security.netapp.com/advisory/ntap-20190401-0001/
- https://sourceware.org/bugzilla/show_bug.cgi?id=22786
- https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=5460617d1567657621107d895ee2dd83bc1f88f2
- https://usn.ubuntu.com/4416-1/
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
- http://www.securityfocus.com/bid/104255
- https://access.redhat.com/errata/RHBA-2019:0327
- https://access.redhat.com/errata/RHSA-2018:3092
- https://security.netapp.com/advisory/ntap-20190329-0001/
- https://security.netapp.com/advisory/ntap-20190401-0001/
- https://sourceware.org/bugzilla/show_bug.cgi?id=22786
- https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=5460617d1567657621107d895ee2dd83bc1f88f2
- https://usn.ubuntu.com/4416-1/
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
JSON original (NVD)
Mostrar
{
"id": "CVE-2018-11236",
"cveTags": [],
"metrics": {
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 7.5,
"accessVector": "NETWORK",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
"authentication": "NONE",
"integrityImpact": "PARTIAL",
"accessComplexity": "LOW",
"availabilityImpact": "PARTIAL",
"confidentialityImpact": "PARTIAL"
},
"acInsufInfo": false,
"impactScore": 6.4,
"baseSeverity": "HIGH",
"obtainAllPrivilege": false,
"exploitabilityScore": 10,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"cvssMetricV30": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.0",
"baseScore": 9.8,
"attackVector": "NETWORK",
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 3.9
}
]
},
"affected": [
{
"source": "cve@mitre.org",
"affectedData": [
{
"vendor": "n/a",
"product": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
]
}
],
"published": "2018-05-18T16:29:00.353",
"references": [
{
"url": "http://www.securityfocus.com/bid/104255",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"source": "cve@mitre.org"
},
{
"url": "https://access.redhat.com/errata/RHBA-2019:0327",
"tags": [
"Third Party Advisory"
],
"source": "cve@mitre.org"
},
{
"url": "https://access.redhat.com/errata/RHSA-2018:3092",
"tags": [
"Patch",
"Third Party Advisory"
],
"source": "cve@mitre.org"
},
{
"url": "https://security.netapp.com/advisory/ntap-20190329-0001/",
"tags": [
"Broken Link"
],
"source": "cve@mitre.org"
},
{
"url": "https://security.netapp.com/advisory/ntap-20190401-0001/",
"tags": [
"Third Party Advisory"
],
"source": "cve@mitre.org"
},
{
"url": "https://sourceware.org/bugzilla/show_bug.cgi?id=22786",
"tags": [
"Issue Tracking",
"Third Party Advisory"
],
"source": "cve@mitre.org"
},
{
"url": "https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=5460617d1567657621107d895ee2dd83bc1f88f2",
"source": "cve@mitre.org"
},
{
"url": "https://usn.ubuntu.com/4416-1/",
"source": "cve@mitre.org"
},
{
"url": "https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html",
"tags": [
"Patch",
"Third Party Advisory"
],
"source": "cve@mitre.org"
},
{
"url": "http://www.securityfocus.com/bid/104255",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://access.redhat.com/errata/RHBA-2019:0327",
"tags": [
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://access.redhat.com/errata/RHSA-2018:3092",
"tags": [
"Patch",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://security.netapp.com/advisory/ntap-20190329-0001/",
"tags": [
"Broken Link"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://security.netapp.com/advisory/ntap-20190401-0001/",
"tags": [
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://sourceware.org/bugzilla/show_bug.cgi?id=22786",
"tags": [
"Issue Tracking",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=5460617d1567657621107d895ee2dd83bc1f88f2",
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://usn.ubuntu.com/4416-1/",
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html",
"tags": [
"Patch",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-190"
},
{
"lang": "en",
"value": "CWE-787"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "stdlib/canonicalize.c in the GNU C Library (aka glibc or libc6) 2.27 and earlier, when processing very long pathname arguments to the realpath function, could encounter an integer overflow on 32-bit architectures, leading to a stack-based buffer overflow and, potentially, arbitrary code execution."
},
{
"lang": "es",
"value": "stdlib/canonicalize.c en GNU C Library (también conocida como glibc o libc6), en versiones 2.27 y anteriores, al procesar argumentos con un nombre de ruta muy largo en la función realpath, podría encontrarse con un desbordamiento de enteros en arquitecturas de 32 bits. Esto podría desembocar en un desbordamiento de búfer basado en pila y en una potencial ejecución de código arbitrario."
}
],
"lastModified": "2026-06-17T01:35:33.317",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B9D63BD8-48E5-437B-AD45-F7EE4AD52EE0",
"versionEndIncluding": "2.27"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:redhat:virtualization_host:4.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "BB28F9AF-3D06-4532-B397-96D7E4792503"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "33C068A4-3780-4EAB-A937-6082DF847564"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "51EF4996-72F4-4FA4-814F-F5991E7A8318"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "825ECE2D-E232-46E0-A047-074B34DB1E97"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:oracle:communications_session_border_controller:8.0.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "1F59AE20-7B9D-47A5-9E0D-A73F4A0E7D34"
},
{
"criteria": "cpe:2.3:a:oracle:communications_session_border_controller:8.1.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "1D4AF039-F3B6-45EB-A87E-8BCCF822AE23"
},
{
"criteria": "cpe:2.3:a:oracle:communications_session_border_controller:8.2.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "404A4EE8-6572-4B35-8C6A-A3CB8F1308A5"
},
{
"criteria": "cpe:2.3:a:oracle:enterprise_communications_broker:3.0.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "17C9CFFB-0F3A-4E59-B6C9-9C8A20BB9B91"
},
{
"criteria": "cpe:2.3:a:oracle:enterprise_communications_broker:3.1.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "E11C65C3-1B17-4362-A99C-59583081A24D"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:netapp:data_ontap_edge:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "E0C4B1E5-75BF-43AE-BBAC-0DD4124C71ED"
},
{
"criteria": "cpe:2.3:a:netapp:element_software_management:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "8E63EEA7-05AB-4B1C-9061-AF357566DCDA"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "cve@mitre.org"
}