CVE-2012-10039
ZEN Load Balancer versions 2.0 and 3.0-rc1 contain a command injection vulnerability in content2-2.cgi. The filelog parameter is passed directly into a backtick-delimited exec() call without sanitation. An authenticated attacker can inject arbitrary shell commands, resulting in remote code execution as the root user. ZEN Load Balancer is the predecessor of ZEVENET and SKUDONET. The affected versions (2.0 and 3.0-rc1) are no longer supported. SKUDONET CE is the current community-maintained successor.
CVSS
- Versión: 4.0
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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: 9.4
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 3.42%
- Percentil entre todas las CVEs puntuadas: 89
- Fecha de la puntuación: 3/10/2026
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
T1210Exploitation of Remote Serviceslateral movement85 % - Impacto principal
T1059Command and Scripting Interpreterexecution90 % - Impacto secundario
T1068Exploitation for Privilege Escalationprivilege escalation80 %
Inyección de comandos en servicio de carga remoto (content2-2.cgi) requiere PR:L. Ejecuta shell arbitrario como root sin interacción (UI:N). CWE-78 confirma RCE.
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 (3)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
CWE
- CWE-78
Referencias
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/linux/http/zen_load_balancer_exec.rb
- https://web.archive.org/web/20111015031540/http://www.zenloadbalancer.com/
- https://web.archive.org/web/20221203195056/https://itsecuritysolutions.org/2012-09-21-ZEN-Load-Balancer-v2.0-and-v3.0-rc1-multiple-vulnerabilities/
- https://www.exploit-db.com/exploits/21849
- https://www.fortiguard.com/encyclopedia/ips/33335/zen-load-balancer-filelog-command-execution
JSON original (NVD)
Mostrar
{
"id": "CVE-2012-10039",
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"timestamp": "2025-08-11T15:41:44.558442Z"
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"valueDensity": "NOT_DEFINED",
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"subIntegrityImpact": "HIGH",
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"vulnAvailabilityImpact": "HIGH",
"availabilityRequirement": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
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"modifiedAttackRequirements": "NOT_DEFINED",
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"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
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"affected": [
{
"source": "disclosure@vulncheck.com",
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{
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"modules": [
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"versions": [
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"published": "2025-08-11T15:15:27.370",
"references": [
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"description": [
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"descriptions": [
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"lang": "en",
"value": "ZEN Load Balancer versions 2.0 and 3.0-rc1 contain a command injection vulnerability in content2-2.cgi. The filelog parameter is passed directly into a backtick-delimited exec() call without sanitation. An authenticated attacker can inject arbitrary shell commands, resulting in remote code execution as the root user. ZEN Load Balancer is the predecessor of ZEVENET and SKUDONET. The affected versions (2.0 and 3.0-rc1) are no longer supported. SKUDONET CE is the current community-maintained successor."
},
{
"lang": "es",
"value": "Las versiones 2.0 y 3.0-rc1 de ZEN Load Balancer contienen una vulnerabilidad de inyección de comandos en content2-2.cgi. El parámetro filelog se pasa directamente a una llamada exec() delimitada por comillas invertidas sin depuración. Un atacante autenticado puede inyectar comandos de shell arbitrarios, lo que resulta en la ejecución remota de código como usuario root. ZEN Load Balancer es el predecesor de ZEVENET y SKUDONET. Las versiones afectadas (2.0 y 3.0-rc1) ya no reciben soporte. SKUDONET CE es el sucesor actual, mantenido por la comunidad."
}
],
"lastModified": "2026-06-16T23:38:43.487",
"sourceIdentifier": "disclosure@vulncheck.com"
}