CVE-2023-45129

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2023-45129
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-10-10 18:15:00 UTC
Updated2024-01-07 11:15:00 UTC
DescriptionSynapse 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.

Risk And Classification

Problem Types: CWE-770

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Fedoraproject Fedora 37 All All All
Operating System Fedoraproject Fedora 38 All All All
Application Matrix Synapse All All All All

References

ReferenceSourceLinkTags
[SECURITY] Fedora 39 Update: matrix-synapse-1.94.0-2.fc39 - package-announce - Fedora Mailing-Lists MISC lists.fedoraproject.org
Rooms - Synapse MISC matrix-org.github.io
[SECURITY] Fedora 37 Update: matrix-synapse-1.80.0-7.fc37 - package-announce - Fedora Mailing-Lists MISC lists.fedoraproject.org
Add a cache around server ACL checking by clokep · Pull Request #16360 · matrix-org/synapse · GitHub MISC github.com
security.gentoo.org/glsa/202401-12 security.gentoo.org
Denial of service due to malicious server ACL events · Advisory · matrix-org/synapse · GitHub MISC github.com
[SECURITY] Fedora 38 Update: matrix-synapse-1.94.0-2.fc38 - package-announce - Fedora Mailing-Lists MISC lists.fedoraproject.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 284642 Fedora Security Update for matrix (FEDORA-2023-c3c8cc5f8b)
  • 284661 Fedora Security Update for matrix (FEDORA-2023-954c2ec5bd)
  • 285204 Fedora Security Update for matrix (FEDORA-2023-4d4c73a8f0)
  • 503384 Alpine Linux Security Update for synapse
  • 506256 Alpine Linux Security Update for synapse
  • 710826 Gentoo Linux Synapse Multiple Vulnerabilities (GLSA 202401-12)
  • 995561 Python (Pip) Security Update for matrix-synapse (GHSA-5chr-wjw5-3gq4)
© CVE.report 2026 |

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report