CVE-2020-5299 Information

Description

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).

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:L

Reference

http://packetstormsecurity.com/files/158730/October-CMS-Build-465-XSS-File-Read-File-Deletion-CSV-Injection.html http://seclists.org/fulldisclosure/2020/Aug/2 https://github.com/octobercms/library/commit/c84bf03f506052c848f2fddc05f24be631427a1a https://github.com/octobercms/october/commit/802d8c8e09a2b342649393edb6d3ceb958851484 https://github.com/octobercms/october/security/advisories/GHSA-4rhm-m2fp-hx7q

Attack Complexity

HIGH

Privileges Required

HIGH

User Interaction Required

HIGH

Scope

REQUIRED

Confidentiality Impact

CHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

LOW

Base Severity

5.1