YARA · Signature Base (Florian Roth / Nextron)
SIGNATURE_BASE_EXPL_SUSP_JS_POC_Dec25
Detects RCE indicators related to the proof-of-concept code for the React Server Remote Code Execution Vulnerability (CVE-2025-55182) but could be used in other JavaScript based PoC code as well
- Autor
- Florian Roth
- Fecha
- 2025-12-05
- Modificada
- 2025-12-06
- 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) but could be used in other JavaScript based PoC code as well
Define 1 patrones (0 de texto, 0 hex, 1 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_Dec25 : CVE_2025_55182 FILE
{
meta:
= "Detects RCE indicators related to the proof-of-concept code for the React Server Remote Code Execution Vulnerability (CVE-2025-55182) but could be used in other JavaScript based PoC code as well"
= "Florian Roth"
= "114c83f8-b798-5db9-a054-a6148dde7d5a"
= "2025-12-05"
= "2025-12-06"
= "https://github.com/msanft/CVE-2025-55182/blob/main/poc.py"
= "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/yara/react_pocs_indicators_dec25.yar#L89-L104"
= "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/LICENSE"
= "142749ac6538d80a9c713eb19b763063e4d788e622f4938ecd0c1edbf51b3c74"
= 70
= 85
= "CVE-2025-55182, FILE"
strings:
$xr1 = /process\.mainModule\.require\(["']child_process["']\).{5,40}\(["'](whoami|powershell|\/bin\/sh|\/bin\/bash|wget|curl|cat \/etc\/passwd|uname|id["'])/
condition:
1 of them and not uint16( 0 ) == 0x3c3f
}
Cadenas (1 patrones)
| Identificador | Tipo | Valor | Modificadores |
|---|---|---|---|
| $xr1 | regex | /process\.mainModule\.require\(["']child_process["']\).{5,40}\(["'](whoami|powershell|\/bin\/sh|\/bin\/bash|wget|curl|cat \/etc\/passwd|uname|id["'])/ |
Condición
1 of them and not uint16( 0 ) == 0x3c3fEn palabras sencillas (Heurística)
- Deben coincidir al menos 1 patrones de la regla.
Prueba esta regla en tu navegador
Arrastra un archivo para escanearlo con esta regla usando YARA-X compilado a WebAssembly. No se sube nada.
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: 114c83f8-b798-5db9-a054-a6148dde7d5a
Etiquetas:CVE_2025_55182FILE
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