YARA · Signature Base (Florian Roth / Nextron)
SIGNATURE_BASE_LOG_EXPL_Sharepoint_CVE_2023_29357_Sep23_1
Detects log entries that could indicate a successful exploitation of CVE-2023-29357 on Microsoft SharePoint servers with the published Python POC
- Autor
- Florian Roth (with help from @LuemmelSec)
- Fecha
- 2023-09-28
- Modificada
- 2023-10-01
- Puntuación / Calidad
- 70 / 85
Qué detecta esta regla
Detects log entries that could indicate a successful exploitation of CVE-2023-29357 on Microsoft SharePoint servers with the published Python POC
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_LOG_EXPL_Sharepoint_CVE_2023_29357_Sep23_1 : CVE_2023_29357
{
meta:
= "Detects log entries that could indicate a successful exploitation of CVE-2023-29357 on Microsoft SharePoint servers with the published Python POC"
= "Florian Roth (with help from @LuemmelSec)"
= "9fa77216-c0d6-55e5-bbcc-adb9438ca456"
= "2023-09-28"
= "2023-10-01"
= "https://twitter.com/Gi7w0rm/status/1706764212704591953?s=20"
= "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/yara/expl_sharepoint_cve_2023_29357.yar#L2-L20"
= "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/LICENSE"
= "03e3a4715c8683dc8d03ad6720c1c9b40482bd0bfa3020aa1152565ec9ec929f"
= 70
= 85
= "CVE-2023-29357"
strings:
$xr1 = /GET [a-z\.\/_]{0,40}\/web\/(siteusers|currentuser) - (80|443) .{10,200} (python-requests\/[0-9\.]{3,8}|-) [^ ]{1,160} [^4]0[0-9] /
condition:
$xr1
}
Cadenas (1 patrones)
| Identificador | Tipo | Valor | Modificadores |
|---|---|---|---|
| $xr1 | regex | /GET [a-z\.\/_]{0,40}\/web\/(siteusers|currentuser) - (80|443) .{10,200} (python-requests\/[0-9\.]{3,8}|-) [^ ]{1,160} [^4]0[0-9] / |
Condición
$xr1En palabras sencillas (Heurística)
- El patrón $xr1 debe estar presente.
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Licencia y atribución
Autor: Florian Roth (with help from @LuemmelSec)
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: 9fa77216-c0d6-55e5-bbcc-adb9438ca456
Etiquetas:CVE_2023_29357