CVE-2023-45129
Dashboard / Vulnerabilities / CVE-2023-45129
Summary: matrix-synapse vulnerable to denial of service due to malicious server ACL events
Details: 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.
References: https://lists.fedoraproject.org/archives/list/[email protected]/message/KEVRB4MG5UXQ5RLZHSUJXM5GWEBYYS5B/, https://lists.fedoraproject.org/archives/list/[email protected]/message/N6P4QULVUE254WI7XF2LWWOGHCYVFXFY/, https://lists.fedoraproject.org/archives/list/[email protected]/message/WRO4MPQ6HOXIUZM6RJP6VTCTMV7RD2T3/, https://matrix-org.github.io/synapse/latest/admin_api/rooms.html#version-2-new-version, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/45xxx/CVE-2023-45129.json, https://github.com/matrix-org/synapse/security/advisories/GHSA-5chr-wjw5-3gq4, https://nvd.nist.gov/vuln/detail/CVE-2023-45129, https://security.gentoo.org/glsa/202401-12, https://github.com/matrix-org/synapse/pull/16360
Affected packages
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