CVSS 7.7 · High EPSS 0,51%
Kerentanan Unrestricted Upload of File with Dangerous Type pada joinmastodon mastodon. Skor CVSS 3.1 7.7 (High) menurut NVD.
Mastodon is a free, open-source social network server based on ActivityPub. Prior to versions 4.2.7, 4.1.15, 4.0.15, and 3.5.19, when fetching remote statuses, Mastodon doesn't check that the response from the remote server has a `Content-Type` header value of the Activity Streams media type, which allows a threat actor to upload a crafted Activity Streams document to a remote server and make a Mastodon server fetch it, if the remote server accepts arbitrary user uploads. The vulnerability allows a threat actor to impersonate an account on a remote server that satisfies all of the following properties: allows the attacker to register an account; accepts arbitrary user-uploaded documents and places them on the same domain as the ActivityPub actors; and serves user-uploaded document in response to requests with an `Accept` header value of the Activity Streams media type. Versions 4.2.7, 4.1.15, 4.0.15, and 3.5.19 contain a fix for this issue.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| joinmastodon | mastodon | Semua versi sebelum 3.5.19 |
| joinmastodon | mastodon | Versi 4.0.0 hingga sebelum 4.0.15 |
| joinmastodon | mastodon | Versi 4.1.0 hingga sebelum 4.1.15 |
| joinmastodon | mastodon | Versi 4.2.0 hingga sebelum 4.2.7 |