Mastodon is a self-hosted, federated microblogging platform. Starting in version 4.2.0 and prior to versions 4.2.16 and 4.3.4, the rate limits are missing on `/auth/setup`. Without those rate limits, an attacker can craft requests that will send an email to an arbitrary addresses.
Versions 4.2.16 and 4.3.4 fix the issue.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
Low
Partial disruption
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 2
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Joinmastodon Mastodon
cpe:2.3:a:joinmastodon:mastodon:*:*:*:*:*:*:*:*
|
4.2.0
|
4.2.16
|
|
Joinmastodon Mastodon
cpe:2.3:a:joinmastodon:mastodon:*:*:*:*:*:*:*:*
|
4.3.0
|
4.3.4
|