Описание
October CMS upload process vulnerable to RCE via Race Condition
Impact
This advisory affects plugins that expose the October\Rain\Database\Attach\File::fromData as a public interface. This vulnerability does not affect vanilla installations of October CMS since this method is not exposed or used by the system internally or externally.
When the developer allows the user to specify their own filename in the fromData method, an unauthenticated user can perform remote code execution (RCE) by exploiting a race condition in the temporary storage directory.
Patches
The issue has been patched in Build 476 (v1.0.476) and v1.1.12 and v2.2.15.
Workarounds
Apply https://github.com/octobercms/library/commit/fe569f3babf3f593be2b1e0a4ae0283506127a83 to your installation manually if unable to upgrade to Build 476 (v1.0.476) or v1.1.12 or v2.2.15.
References
Credits to:
- DucNT, HungTD and GiangVQ from RedTeam@VNG Security Response Center.
For more information
If you have any questions or comments about this advisory:
- Email us at hello@octobercms.com
Пакеты
october/system
< 1.0.476
1.0.476
october/system
>= 1.1.0, < 1.1.12
1.1.12
october/system
>= 2.0.0, < 2.2.15
2.2.15
Связанные уязвимости
October/System is the system module for October CMS, a self-hosted CMS platform based on the Laravel PHP Framework. Prior to versions 1.0.476, 1.1.12, and 2.2.15, when the developer allows the user to specify their own filename in the `fromData` method, an unauthenticated user can perform remote code execution (RCE) by exploiting a race condition in the temporary storage directory. This vulnerability affects plugins that expose the `October\Rain\Database\Attach\File::fromData` as a public interface and does not affect vanilla installations of October CMS since this method is not exposed or used by the system internally or externally. The issue has been patched in Build 476 (v1.0.476), v1.1.12, and v2.2.15. Those who are unable to upgrade may apply with patch to their installation manually as a workaround.
Уязвимость реализации метода fromData CMS-системы October CMS, позволяющая нарушителю выполнить произвольный код