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SCA: security update for matrix-synapse (GHSA-4mhg-xv73-xq2x)

high Tenable Self-Hosted Container Security Plugin ID 410286

Description

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

 - Synapse is an open-source Matrix homeserver. Synapse versions before 1.106 are vulnerable to a disk fill
 attack, where an unauthenticated adversary can induce Synapse to download and cache large amounts of
 remote media. The default rate limit strategy is insufficient to mitigate this. This can lead to a denial
 of service, ranging from further media uploads/downloads failing to completely unavailability of the
 Synapse process, depending on how Synapse was deployed. Synapse 1.106 introduces a new "leaky bucket" rate
 limit on remote media downloads to reduce the amount of data a user can request at a time. This does not
 fully address the issue, but does limit an unauthenticated user's ability to request large amounts of data
 to be cached. (CVE-2024-37302)

Solution

Update the matrix-synapse library and its related packages to version 1.106 or later.

See Also

https://github.com/advisories/GHSA-4mhg-xv73-xq2x

Plugin Details

Severity: High

ID: 410286

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: High

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2024-37302

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/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: High

Base Score: 8.7

Threat Score: 6.6

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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: 12/3/2024

Vulnerability Publication Date: 12/3/2024

Reference Information

CVE: CVE-2024-37302

cwe: CWE-770