CVE-2001-1556
Estado: ModificadaMedia (5)—
The log files in Apache web server contain information directly supplied by clients and does not filter or quote control characters, which could allow remote attackers to hide HTTP requests and spoof source IP addresses when logs are viewed with UNIX programs such as cat, tail, and grep.
CVSS
- Versión: 2.0
- Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N
- Puntuación base: 5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 3.56%
- Percentil entre todas las CVEs puntuadas: 89
- 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 (1)
CWE
- CWE-532
Referencias
- http://archives.neohapsis.com/archives/bugtraq/2001-10/0231.html
- http://httpd.apache.org/docs/logs.html
- http://www.iss.net/security_center/static/7363.php
- http://archives.neohapsis.com/archives/bugtraq/2001-10/0231.html
- http://httpd.apache.org/docs/logs.html
- http://www.iss.net/security_center/static/7363.php
JSON original (NVD)
Mostrar
{
"id": "CVE-2001-1556",
"cveTags": [],
"metrics": {
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 5,
"accessVector": "NETWORK",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
"authentication": "NONE",
"integrityImpact": "PARTIAL",
"accessComplexity": "LOW",
"availabilityImpact": "NONE",
"confidentialityImpact": "NONE"
},
"acInsufInfo": false,
"impactScore": 2.9,
"baseSeverity": "MEDIUM",
"obtainAllPrivilege": false,
"exploitabilityScore": 10,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
]
},
"affected": [
{
"source": "cve@mitre.org",
"affectedData": [
{
"vendor": "n/a",
"product": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
]
}
],
"published": "2001-12-31T05:00:00.000",
"references": [
{
"url": "http://archives.neohapsis.com/archives/bugtraq/2001-10/0231.html",
"tags": [
"Broken Link"
],
"source": "cve@mitre.org"
},
{
"url": "http://httpd.apache.org/docs/logs.html",
"tags": [
"Vendor Advisory"
],
"source": "cve@mitre.org"
},
{
"url": "http://www.iss.net/security_center/static/7363.php",
"tags": [
"Broken Link"
],
"source": "cve@mitre.org"
},
{
"url": "http://archives.neohapsis.com/archives/bugtraq/2001-10/0231.html",
"tags": [
"Broken Link"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "http://httpd.apache.org/docs/logs.html",
"tags": [
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "http://www.iss.net/security_center/static/7363.php",
"tags": [
"Broken Link"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-532"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "The log files in Apache web server contain information directly supplied by clients and does not filter or quote control characters, which could allow remote attackers to hide HTTP requests and spoof source IP addresses when logs are viewed with UNIX programs such as cat, tail, and grep."
}
],
"lastModified": "2026-06-16T21:56:30.050",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "44B59C66-C5B3-4682-BB43-A390B4093828",
"versionEndExcluding": "1.3.31",
"versionStartIncluding": "1.3.0"
},
{
"criteria": "cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "28A956D5-032E-4DBE-8201-B60B44BDCF01",
"versionEndExcluding": "2.0.49",
"versionStartIncluding": "2.0.0"
}
],
"operator": "OR"
}
]
}
],
"vendorComments": [
{
"comment": "This is a duplicate CVE name and is a combination of CVE-2003-0020 and CVE-2003-0083.",
"lastModified": "2006-08-30T00:00:00",
"organization": "Red Hat"
}
],
"sourceIdentifier": "cve@mitre.org"
}