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nvd-json-data-feeds/CVE-2019/CVE-2019-158xx/CVE-2019-15803.json

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{
"id": "CVE-2019-15803",
"sourceIdentifier": "cve@mitre.org",
"published": "2019-11-14T21:15:11.890",
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"lastModified": "2024-11-21T04:29:29.943",
"vulnStatus": "Modified",
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"cveTags": [],
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"descriptions": [
{
"lang": "en",
"value": "An issue was discovered on Zyxel GS1900 devices with firmware before 2.50(AAHH.0)C0. Through an undocumented sequence of keypresses, undocumented functionality is triggered. A diagnostics shell is triggered via CTRL-ALT-t, which prompts for the password returned by fds_sys_passDebugPasswd_ret(). The firmware contains access control checks that determine if remote users are allowed to access this functionality. The function that performs this check (fds_sys_remoteDebugEnable_ret in libfds.so) always return TRUE with no actual checks performed. The diagnostics menu allows for reading/writing arbitrary registers and various other configuration parameters which are believed to be related to the network interface chips."
},
{
"lang": "es",
"value": "Se descubri\u00f3 un problema en los dispositivos Zyxel GS1900 con firmware anterior a la versi\u00f3n 2.50 (AAHH.0) C0. A trav\u00e9s de una secuencia indocumentada de pulsaciones de teclas, se activa la funcionalidad no documentada. Se activa un shell de diagn\u00f3stico a trav\u00e9s de CTRL-ALT-t, que solicita la contrase\u00f1a devuelta por fds_sys_passDebugPasswd_ret (). El firmware contiene comprobaciones de control de acceso que determinan si los usuarios remotos pueden acceder a esta funcionalidad. La funci\u00f3n que realiza esta comprobaci\u00f3n (fds_sys_remoteDebugEnable_ret en libfds.so) siempre devuelve VERDADERO sin realizar comprobaciones reales. El men\u00fa de diagn\u00f3stico permite leer / escribir registros arbitrarios y varios otros par\u00e1metros de configuraci\u00f3n que se cree que est\u00e1n relacionados con los chips de la interfaz de red."
}
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"baseScore": 9.1,
"baseSeverity": "CRITICAL",
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"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
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"availabilityImpact": "NONE"
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},
"exploitabilityScore": 3.9,
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"baseScore": 6.4,
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"accessVector": "NETWORK",
"accessComplexity": "LOW",
"authentication": "NONE",
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
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"availabilityImpact": "NONE"
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},
"baseSeverity": "MEDIUM",
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},
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}
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}
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