Detections
Analytics

SCA: security update for matrix-synapse (GHSA-5chr-wjw5-3gq4)

medium Tenable Self-Hosted Container Security Plugin ID 410763

Description

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

 - Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. Prior to
 version 1.94.0, 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. Server administrators are advised to upgrade to Synapse 1.94.0 or
 later. As a workaround, rooms with malicious server ACL events can be purged and blocked using the admin
 API. (CVE-2023-45129)

See Also

https://github.com/advisories/GHSA-5chr-wjw5-3gq4

Plugin Details

Severity: Medium

ID: 410763

Version: Revision 1.7

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: 23.51

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 4.5

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

CVSS Score Source: CVE-2023-45129

CVSS v3

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 4.3

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

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

CVSS v4

Risk Factor: Medium

Base Score: 6.9

Threat Score: 4.6

Threat Vector: CVSS:4.0/E:U

Vector: 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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 10/10/2023

Vulnerability Publication Date: 10/10/2023

Reference Information

CVE: CVE-2023-45129

cwe: CWE-770