In OctoberCMS (october/october composer package) versions from 1.0.319 and before 1.0.466, any users with the ability to modify any data that could eventually be exported as a CSV file from the `ImportExportController` could potentially introduce a CSV injection into the data to cause the generated CSV export file to be malicious. This requires attackers to achieve the following before a successful attack can be completed: 1. Have found a vulnerability in the victims spreadsheet software of choice. 2. Control data that would potentially be exported through the `ImportExportController` by a theoretical victim. 3. Convince the victim to export above data as a CSV and run it in vulnerable spreadsheet software while also bypassing any sanity checks by said software. Issue has been patched in Build 466 (v1.0.466).
The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.
| Link | Tags |
|---|---|
| https://github.com/octobercms/october/security/advisories/GHSA-4rhm-m2fp-hx7q | third party advisory patch |
| https://github.com/octobercms/library/commit/c84bf03f506052c848f2fddc05f24be631427a1a | third party advisory patch |
| https://github.com/octobercms/october/commit/802d8c8e09a2b342649393edb6d3ceb958851484 | third party advisory patch |
| http://packetstormsecurity.com/files/158730/October-CMS-Build-465-XSS-File-Read-File-Deletion-CSV-Injection.html | third party advisory vdb entry |
| http://seclists.org/fulldisclosure/2020/Aug/2 | third party advisory mailing list |