YARA · Signature Base (Florian Roth / Nextron)
SIGNATURE_BASE_EXPL_SUSP_JS_POC_RSC_Detector_Payloads_Dec25
Detects RCE indicators related to the proof-of-concept code for the React Server Remote Code Execution Vulnerability (CVE-2025-55182) as used in the RSC Detector browser extension but could be used in other JavaScript based PoC code as well
- Autor
- Florian Roth
- Fecha
- 2025-12-06
- Modificada
- 2026-05-15
- Puntuación / Calidad
- 70 / 85
Qué detecta esta regla
Detects RCE indicators related to the proof-of-concept code for the React Server Remote Code Execution Vulnerability (CVE-2025-55182) as used in the RSC Detector browser extension but could be used in other JavaScript based PoC code as well
Define 3 patrones (3 de texto, 0 hex, 0 regex).
Resumen generado a partir de los metadatos y la condición de la regla.
Código de la regla
rule SIGNATURE_BASE_EXPL_SUSP_JS_POC_RSC_Detector_Payloads_Dec25 : CVE_2025_55182
{
meta:
= "Detects RCE indicators related to the proof-of-concept code for the React Server Remote Code Execution Vulnerability (CVE-2025-55182) as used in the RSC Detector browser extension but could be used in other JavaScript based PoC code as well"
= "Florian Roth"
= "98887e97-2dd4-5777-9fab-02805035de14"
= "2025-12-06"
= "2026-05-15"
= "https://github.com/mrknow001/RSC_Detector"
= "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/yara/react_pocs_indicators_dec25.yar#L106-L123"
= "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/LICENSE"
= "b51f4028662795ffcbf4c17c1b2cbad35a8fa64104aa5cfdaf24b13e9663eb09"
= 70
= 85
= "CVE-2025-55182"
strings:
$s1 = "process.mainModule.require('child_process').execSync("
$s2 = ").toString('base64');"
$f1 = "echo vulnerability_test"
condition:
all of ( $s* ) and not 1 of ( $f* )
}
Cadenas (3 patrones)
| Identificador | Tipo | Valor | Modificadores |
|---|---|---|---|
| $s1 | texto | "process.mainModule.require('child_process').execSync(" | |
| $s2 | texto | ").toString('base64');" | |
| $f1 | texto | "echo vulnerability_test" |
Condición
all of ( $s* ) and not 1 of ( $f* )En palabras sencillas (Heurística)
- Deben coincidir todos los patrones de ( $s* ).
- Deben coincidir al menos 1 patrones de ( $f* ).
Prueba esta regla en tu navegador
Arrastra un archivo para escanearlo con esta regla usando YARA-X compilado a WebAssembly. No se sube nada.
Referencias
Licencia y atribución
Autor: Florian Roth
Repositorio de origen: Signature Base (Florian Roth / Nextron) @ 94a1c48d7a
Licencia: Detection Rule License 1.1 (licencia del repositorio)
Obtenida a través de YARA Forge 20260927, que añade a los nombres el prefijo de la fuente y campos meta normalizados.
Id de la regla: 98887e97-2dd4-5777-9fab-02805035de14
Etiquetas:CVE_2025_55182
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