SCA: security update for matrix-synapse (GHSA-vp6v-whfm-rv3g)

high Tenable Self-Hosted Container Security Plugin ID 419445

Description

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

- Synapse is an open-source Matrix homeserver. In Synapse versions before 1.120.1, enabling the
dynamic_thumbnails option or processing a specially crafted request could trigger the decoding and
thumbnail generation of uncommon image formats, potentially invoking external tools like Ghostscript for
processing. This significantly expands the attack surface in a historically vulnerable area, presenting a
risk that far outweighs the benefit, particularly since these formats are rarely used on the open web or
within the Matrix ecosystem. Synapse 1.120.1 addresses the issue by restricting thumbnail generation to
images in the following widely used formats: PNG, JPEG, GIF, and WebP. This vulnerability is fixed in
1.120.1. (CVE-2024-53863)

Plugin Details

Severity: High

ID: 419445

Version: Revision 1.12

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: Medium

Score: 4.3

Percentile: 53.37

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

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

CVSS Score Source: CVE-2024-53863

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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

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

CVSS v4

Risk Factor: High

Base Score: 8.2

Threat Score: 4.6

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/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-2024-53863

cwe: CWE-434

Detections

Analytics