GHSA-r6wx-627v-gh2f Directus has an HTML Injection in Comment

• npm @directus/app: >= 11.0.0, < 13.3.1 → fixed in 13.3.1 • npm directus: >= 10.10.0, < 10.13.4 → fixed in 10.13.4 • npm directus: >= 11.0.0-rc.1, < 11.2.2 → fixed in 11.2.2

Summary The Comment feature has implemented a filter to prevent users from adding restricted characters, such as HTML tags. However, this filter operates on the client-side, which can be bypassed, making the application vulnerable to HTML Injection. Details The Comment feature implements a character filter on the client-side, this can be bypassed by directly sending a request to the endpoint. Example Request: ``` PATCH /activity/comment/3 HTTP/2 Host: directus.local { "comment": "TEST HTML INJECTION Test Link" } ``` Example Response: ```json { "data": { "id": 3, "action": "comment", "user": "288fdccc-399a-40a1-ac63-811bf62e6a18", "timestamp": "2023-09-06T02:23:40.740Z", "ip": "10.42.0.1", "user_agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36", "collection": "directus_files", "item": "7247dda1-c386-4e7a-8121-7e9c1a42c15a", "comment": "TEST HTML INJECTION Test Link", "origin": "https://directus.local", "revisions": [] } } ``` Example Result: Impact With the introduction of session cookies this issue has become exploitable as a malicious script is now able to do authenticated actions on the current users behalf.