CVE-2022-31152

Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. The Matrix specification specifies a list of [event authorization rules](https://spec.matrix.org/v1.2/rooms/v9/#authorization-rules) which must be checked when determining if an event should be accepted into a room. In versions of Synapse up to and including version 1.61.0, some of these rules are not correctly applied. An attacker could craft events which would be accepted by Synapse but not a spec-conformant server, potentially causing divergence in the room state between servers. Administrators of homeservers with federation enabled are advised to upgrade to version 1.62.0 or higher. Federation can be disabled by setting [`federation_domain_whitelist`](https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html#federation_domain_whitelist) to an empty list (`[]`) as a workaround.
References
Link Resource
https://github.com/matrix-org/synapse/pull/13087 Issue Tracking Patch Third Party Advisory
https://github.com/matrix-org/synapse/pull/13088 Issue Tracking Patch Third Party Advisory
https://github.com/matrix-org/synapse/releases/tag/v1.62.0 Release Notes Third Party Advisory
https://github.com/matrix-org/synapse/security/advisories/GHSA-jhjh-776m-4765 Issue Tracking Mitigation Third Party Advisory
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Configurations

Configuration 1 (hide)

cpe:2.3:a:matrix:synapse:*:*:*:*:*:*:*:*

Information

Published : 2022-09-02 13:15

Updated : 2022-09-08 20:21


NVD link : CVE-2022-31152

Mitre link : CVE-2022-31152


JSON object : View

CWE
CWE-755

Improper Handling of Exceptional Conditions

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Products Affected

matrix

  • synapse