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Alpine: multiple synapse packages: security update to 1.95.1-r0

medium Tenable Self-Hosted Container Security Plugin ID 426251

Description

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

 - Synapse is an open-source Matrix homeserver Prior to versions 1.95.1 and 1.96.0rc1, cached device
 information of remote users can be queried from Synapse. This can be used to enumerate the remote users
 known to a homeserver. System administrators are encouraged to upgrade to Synapse 1.95.1 or 1.96.0rc1 to
 receive a patch. As a workaround, the `federation_domain_whitelist` can be used to limit federation
 traffic with a homeserver. (CVE-2023-43796)

See Also

https://security.alpinelinux.org/vuln/CVE-2023-43796

Plugin Details

Severity: Medium

ID: 426251

Version: Revision 1.7

Type: Local

Published: 5/16/2025

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2023-43796

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 10/31/2023

Reference Information

CVE: CVE-2023-43796