CVE-2023-34253
Gravedad CVSS v3.1:
ALTA
Tipo:
CWE-94
Control incorrecto de generación de código (Inyección de código)
Fecha de publicación:
14/06/2023
Última modificación:
07/11/2023
Descripción
*** Pendiente de traducción *** Grav is a flat-file content management system. Prior to version 1.7.42, the denylist introduced in commit 9d6a2d to prevent dangerous functions from being executed via injection of malicious templates was insufficient and could be easily subverted in multiple ways -- (1) using unsafe functions that are not banned, (2) using capitalised callable names, and (3) using fully-qualified names for referencing callables. Consequently, a low privileged attacker with login access to Grav Admin panel and page creation/update permissions is able to inject malicious templates to obtain remote code execution. A patch in version 1.7.42 improves the denylist.
Impacto
Puntuación base 3.x
7.20
Gravedad 3.x
ALTA
Productos y versiones vulnerables
| CPE | Desde | Hasta |
|---|---|---|
| cpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:* | 1.7.42 (excluyendo) |
Para consultar la lista completa de nombres de CPE con productos y versiones, ver esta página
Referencias a soluciones, herramientas e información
- https://github.com/getgrav/grav/blob/1.7.40/system/src/Grav/Common/Utils.php#L1952-L2190
- https://github.com/getgrav/grav/commit/71bbed12f950de8335006d7f91112263d8504f1b
- https://github.com/getgrav/grav/security/advisories/GHSA-j3v8-v77f-fvgm
- https://huntr.dev/bounties/3ef640e6-9e25-4ecb-8ec1-64311d63fe66/
- https://www.github.com/getgrav/grav/commit/9d6a2dba09fd4e56f5cdfb9a399caea355bfeb83



