Joomla Extension - getk2.org - Exposure of sensitive files via attachment copy in K2 extension for Joomla < 2.26
The K2 frontend article-save handler accepts an `attachment[N][existing]` POST field that is concatenated with `JPATH_SITE/` and passed to `JFile::copy()`. `JPath::clean` does NOT strip `..`, and there is no allow-list of source paths. An Author can therefore copy `configuration.php` (or any other file readable by the web user — including `../../../etc/passwd`) into `/media/k2/attachments/`, then retrieve the contents via the K2 attachment-download endpoint.
Problem Types
| Type | CWE ID | Description |
|---|
| CWE | CWE-22 | CWE-22 Improper Limitation of a Pathname to a Restricted Directory |
Type: CWE
Description: CWE-22 Improper Limitation of a Pathname to a Restricted Directory
Metrics
| Version | Base score | Base severity | Vector |
|---|