Detections
Analytics

SCA: security update for matrix-synapse (GHSA-3h7q-rfh9-xm4v)

medium Tenable Self-Hosted Container Security Plugin ID 409540

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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. (CVE-2024-31208)

See Also

https://github.com/advisories/GHSA-3h7q-rfh9-xm4v

Plugin Details

Severity: Medium

ID: 409540

Version: Revision 1.10

Type: Local

Family: SCA Checks

Published: 1/23/2025

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.63

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:C

CVSS Score Source: CVE-2024-31208

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 4/23/2024

Vulnerability Publication Date: 4/23/2024

Reference Information

CVE: CVE-2024-31208

cwe: CWE-770