Detections
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Fedora 39 : matrix-synapse (2023-957972e77c)

medium Nessus Plugin ID 185440

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Synopsis

The remote Fedora host is missing one or more security updates.

Description

The remote Fedora 39 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2023-957972e77c advisory.

 - 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)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected matrix-synapse package.

See Also

https://bodhi.fedoraproject.org/updates/FEDORA-2023-957972e77c

Plugin Details

Severity: Medium

ID: 185440

File Name: fedora_2023-957972e77c.nasl

Version: 1.0

Type: local

Agent: unix

Published: 11/9/2023

Updated: 11/9/2023

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 1.4

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

CPE: cpe:/o:fedoraproject:fedora:39, p-cpe:/a:fedoraproject:fedora:matrix-synapse

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 11/1/2023

Vulnerability Publication Date: 10/31/2023

Reference Information

CVE: CVE-2023-43796