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CVE-2023-32323
Good to know:
Date: May 26, 2023
Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. A malicious user on a Synapse homeserver X with permission to create certain state events can disable outbound federation from X to an arbitrary homeserver Y. Synapse instances with federation disabled are not affected. In versions of Synapse up to and including 1.73, Synapse did not limit the size of "invite_room_state", meaning that it was possible to create an arbitrarily large invite event. Synapse 1.74 refuses to create oversized "invite_room_state" fields. Server operators should upgrade to Synapse 1.74 or newer urgently.
Language: Python
Severity Score
Related Resources (9)
Severity Score
Weakness Type (CWE)
Improper Input Validation
CWE-20Top Fix
CVSS v3.1
| Base Score: |
|
|---|---|
| Attack Vector (AV): | NETWORK |
| Attack Complexity (AC): | LOW |
| Privileges Required (PR): | LOW |
| User Interaction (UI): | NONE |
| Scope (S): | CHANGED |
| Confidentiality (C): | NONE |
| Integrity (I): | NONE |
| Availability (A): | LOW |