CVE-2018-19421 Information

Description

In GetSimpleCMS 3.3.15 admin/upload.php blocks .html uploads but Internet Explorer render HTML elements in a .eml file because of admin/upload-uploadify.php and validate_safe_file in admin/inc/security_functions.php.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N

Reference

https://github.com/GetSimpleCMS/GetSimpleCMS/issues/1301

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction Required

HIGH

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

NONE

Base Severity

3.8