CVE-2009-20011
ContentKeeper Web Appliance (now maintained by Impero Software) versions prior to 125.10 are vulnerable to remote command execution due to insecure handling of file uploads via the mimencode CGI utility. The vulnerability allows unauthenticated attackers to upload and execute arbitrary scripts as the Apache user. Additionally, the exploit can optionally escalate privileges by abusing insecure PATH usage in the benetool binary, resulting in root-level access if successful.
CVSS
- Versión: 4.0
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Puntuación base: 10
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 1.36%
- Percentil entre todas las CVEs puntuadas: 71
- Fecha de la puntuación: 5/10/2026
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 access95 % - Impacto principal
T1059Command and Scripting Interpreterexecution90 % - Impacto secundario
T1068Exploitation for Privilege Escalationprivilege escalation80 % - Impacto secundario
T1505.003Web Shellpersistence85 %
Acceso remoto sin autenticación (AV:N, PR:N, UI:N) a aplicación web vulnerable; upload de scripts ejecutables como Apache user con escalada a root vía PATH inseguro en benetool.
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (2)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
CWE
- CWE-78, CWE-434
Referencias
- http://www.aushack.com/200904-contentkeeper.txt
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/http/contentkeeperweb_mimencode.rb
- https://web.archive.org/web/20081220084819/http://www.contentkeeper.com/
- https://www.ativion.com/contentkeeper/
- https://www.vulncheck.com/advisories/contentkeeper-web-appliance-rce-via-mimencode
JSON original (NVD)
Mostrar
{
"id": "CVE-2009-20011",
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"id": "CVE-2009-20011",
"role": "CISA Coordinator",
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},
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},
{
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],
"version": "2.0.3",
"timestamp": "2025-09-02T20:42:55.453012Z"
}
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"baseSeverity": "CRITICAL",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"exploitMaturity": "NOT_DEFINED",
"providerUrgency": "NOT_DEFINED",
"userInteraction": "NONE",
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"privilegesRequired": "NONE",
"subIntegrityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"subAvailabilityImpact": "HIGH",
"vulnAvailabilityImpact": "HIGH",
"availabilityRequirement": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
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"vulnConfidentialityImpact": "HIGH",
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"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
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"affected": [
{
"source": "disclosure@vulncheck.com",
"affectedData": [
{
"vendor": "ContentKeeper Technologies",
"modules": [
"mimencode CGI handler",
"/cgi-bin/ck/mimencode"
],
"product": "ContentKeeper Web Appliance",
"versions": [
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"published": "2025-08-30T14:15:35.140",
"references": [
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"source": "disclosure@vulncheck.com"
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{
"url": "https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/http/contentkeeperweb_mimencode.rb",
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"value": "ContentKeeper Web Appliance (now maintained by Impero Software) versions prior to 125.10 are vulnerable to remote command execution due to insecure handling of file uploads via the mimencode CGI utility. The vulnerability allows unauthenticated attackers to upload and execute arbitrary scripts as the Apache user. Additionally, the exploit can optionally escalate privileges by abusing insecure PATH usage in the benetool binary, resulting in root-level access if successful."
},
{
"lang": "es",
"value": "ContentKeeper Web Appliance (ahora mantenido por Impero Software) versiones anteriores a la 125.10 son vulnerables a la ejecución remota de comandos debido al manejo inseguro de cargas de archivos a través de la utilidad CGI mimencode. La vulnerabilidad permite a atacantes no autenticados cargar y ejecutar scripts arbitrarios como el usuario Apache. Además, el exploit puede escalar privilegios opcionalmente abusando del uso inseguro de PATH en el binario benetool, lo que resulta en acceso a nivel de root si tiene éxito."
}
],
"lastModified": "2026-10-01T23:10:00.233",
"sourceIdentifier": "disclosure@vulncheck.com"
}