CVE-2023-43796mediumCWE-200

CVE-2023-43796: falha de média gravidade em matrix-org synapse

Synapse vulnerable to leak of remote user device information

Publicada em · Atualizada em

Seguir esta CVE+ Monitorar synapse+ Monitorar matrix-synapse

Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.

13Vexday Risk Score

Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.

ssvc Trackcvss 5.3epss 1.2%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Produtos afetados
matrix-org · synapse
CVEs relacionadas — matrix-org synapse

No mesmo produto, das mais perigosas para as menos.

CVE-2020-26257MEDIUMDenial of service attack via incorrect parameters to federation APIsEPSS 2.4%CVE-2021-21274MEDIUMDenial of service attack via .well-known lookupsEPSS 2.2%CVE-2021-21273LOWOpen redirects on some federation and push requestsEPSS 1.8%CVE-2022-31052MEDIUMURL previews can crash Synapse media repositories or Synapse monolithsEPSS 1.7%CVE-2021-29471LOWDenial of service in Matrix SynapseEPSS 1.6%CVE-2021-21393MEDIUMDenial of service (via resource exhaustion) due to improper input validation on groups/communities endpointsEPSS 1.6%