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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

ExploitSignature Base (Florian Roth / Nextron)Detection Rule License 1.1Compila con YARA-X
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

expl-susp-js-poc-rsc-detector-payloads-dec25.yarDetection Rule License 1.1
rule SIGNATURE_BASE_EXPL_SUSP_JS_POC_RSC_Detector_Payloads_Dec25 : CVE_2025_55182
{
	meta:
		description = "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"
		author = "Florian Roth"
		id = "98887e97-2dd4-5777-9fab-02805035de14"
		date = "2025-12-06"
		modified = "2026-05-15"
		reference = "https://github.com/mrknow001/RSC_Detector"
		source_url = "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/yara/react_pocs_indicators_dec25.yar#L106-L123"
		license_url = "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/LICENSE"
		logic_hash = "b51f4028662795ffcbf4c17c1b2cbad35a8fa64104aa5cfdaf24b13e9663eb09"
		score = 70
		quality = 85
		tags = "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)

IdentificadorTipoValorModificadores
$s1texto"process.mainModule.require('child_process').execSync("
$s2texto").toString('base64');"
$f1texto"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* ).

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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)

Regla original

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