October CMS upload process vulnerable to RCE via Race Condition
Package
Affected versions
< 1.0.476
>= 1.1.0, < 1.1.12
>= 2.0.0, < 2.2.15
Patched versions
1.0.476
1.1.12
2.2.15
Description
Published by the National Vulnerability Database
Jul 12, 2022
Published to the GitHub Advisory Database
Jul 13, 2022
Reviewed
Jul 13, 2022
Last updated
Jan 27, 2023
Impact
This advisory affects plugins that expose the
October\Rain\Database\Attach\File::fromDataas 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
fromDatamethod, 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 octobercms/library@fe569f3 to your installation manually if unable to upgrade to Build 476 (v1.0.476) or v1.1.12 or v2.2.15.
References
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References