CVE-2023-43796
Assigner: GitHub_M
Published: 2023-10-31T16:52:48.505Z
State: PUBLISHED
title: Synapse vulnerable to leak of remote user device information
problemTypes: descriptions: cweId: CWE-200
description: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
type: CWE
metrics: cvssV3_1: attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 5.3
baseSeverity: MEDIUM
confidentialityImpact: LOW
integrityImpact: NONE
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
version: 3.1
affected: vendor: matrix-org
product: synapse
versions: version: < 1.95.1
status: affected
descriptions: value: 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.

source: advisory: GHSA-mp92-3jfm-3575
discovery: UNKNOWN