4.9

CVE-2023-45129

matrix-synapse vulnerable to denial of service due to malicious server ACL events

Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. Prior to version 1.94.0, a malicious server ACL event can impact performance temporarily or permanently leading to a persistent denial of service. Homeservers running on a closed federation (which presumably do not need to use server ACLs) are not affected. Server administrators are advised to upgrade to Synapse 1.94.0 or later. As a workaround, rooms with malicious server ACL events can be purged and blocked using the admin API.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Matrix ≫ Synapse Version < 1.94.0
Fedoraproject ≫ Fedora Version37
Fedoraproject ≫ Fedora Version38
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 1.17% 0.632
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 4.9 1.2 3.6
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
security-advisories@github.com 4.9 1.2 3.6
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CWE-770 Allocation of Resources Without Limits or Throttling

The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/N6P4QULVUE254WI7XF2LWWOGHCYVFXFY/
https://security.gentoo.org/glsa/202401-12
https://github.com/matrix-org/synapse/pull/16360
Patch
Vendor Advisory
https://github.com/matrix-org/synapse/security/advisories/GHSA-5chr-wjw5-3gq4
Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KEVRB4MG5UXQ5RLZHSUJXM5GWEBYYS5B/
Mailing List
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WRO4MPQ6HOXIUZM6RJP6VTCTMV7RD2T3/
Mailing List
https://matrix-org.github.io/synapse/latest/admin_api/rooms.html#version-2-new-version
Release Notes