CVE-2023-45129 – matrix-synapse

Package

Manager: pip
Name: matrix-synapse
Vulnerable Version: >=0 <1.94.0

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

EPSS: 0.00252 pctl0.48385

Details

matrix-synapse vulnerable to denial of service due to malicious server ACL events ### Impact A malicious server ACL event can impact performance temporarily or permanently leading to a persistent denial of service. Homeservers running on a closed federation (which presumably do not need to use server ACLs) are not affected. ### Patches Server administrators are advised to upgrade to Synapse 1.94.0 or later. ### Workarounds Rooms with malicious server ACL events can be [purged and blocked](https://matrix-org.github.io/synapse/latest/admin_api/rooms.html#version-2-new-version) using the admin API.

Metadata

Created: 2023-10-10T21:27:53Z
Modified: 2024-09-24T17:42:27Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/10/GHSA-5chr-wjw5-3gq4/GHSA-5chr-wjw5-3gq4.json
CWE IDs: ["CWE-770"]
Alternative ID: GHSA-5chr-wjw5-3gq4
Finding: F002
Auto approve: 1