Description

Synapse is an open-source Matrix homeserver. A remote Matrix user with malicious intent, sharing a room with Synapse instances before 1.105.1, can dispatch specially crafted events to exploit a weakness in the V2 state resolution algorithm. This can induce high CPU consumption and accumulate excessive data in the database of such instances, resulting in a denial of service. Servers in private federations, or those that do not federate, are not affected. Server administrators should upgrade to 1.105.1 or later. Some workarounds are available. One can ban the malicious users or ACL block servers from the rooms and/or leave the room and purge the room using the admin API.

INFO

Published Date :

2024-04-23T17:26:39.171Z

Last Modified :

2025-02-13T17:47:51.943Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2024-31208 vulnerability.

Vendors Products
Element-hq
  • Synapse
Fedoraproject
  • Fedora
Matrix
  • Synapse

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact