CVE-2023-32323
CVE-2023-32323 · Synapse Outgoing federation to specific hosts can be disabled by sending malicious invites
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. A malicious user on a Synapse homeserver X with permission to create certain state events can disable outbound federation from X to an arbitrary homeserver Y. Synapse instances with federation disabled are not affected. In versions of Synapse up to and including 1.73, Synapse did not limit the size of `invite_room_state`, meaning that it was possible to create an arbitrarily large invite event. Synapse 1.74 refuses to create oversized `invite_room_state` fields. Server operators should upgrade to Synapse 1.74 or newer urgently.
CVSS 5.0 · Medium · EPSS 1.0% · Fix available
- Published
- Updated
Affected products and versions
synapse
- Versions
- < 1.74.0: Affected
No fix published
matrix-synapse PyPI
- Versions
- 0.33.5
- 0.33.5.1
- 0.33.6
- 0.33.6rc1
- 0.33.7
- 0.33.7rc1
- 0.33.7rc2
- 0.33.8
- 0.33.8rc2
- 0.33.9
- 0.34.0
- 0.34.0.1
- 0.34.0rc1
- 0.34.0rc2
- 0.34.1.1
- 0.99.0
- 0.99.0rc1
- 0.99.0rc2
- 0.99.0rc3
- 0.99.0rc4
- 0.99.1
- 0.99.1.1
- 0.99.1rc1
- 0.99.1rc2
- 0.99.2
- 0.99.2rc1
- 0.99.3
- 0.99.3.1
- 0.99.3.2
- 0.99.3rc1
- 0.99.4
- 0.99.4rc1
- 0.99.5
- 0.99.5.1
- 0.99.5.2
- 0.99.5rc1
- 1.0.0
- 1.0.0rc1
- 1.0.0rc2
- 1.0.0rc3
- 1.1.0
- 1.1.0rc1
- 1.1.0rc2
- 1.10.0
- 1.10.0rc1
- 1.10.0rc2
- 1.10.0rc3
- 1.10.0rc5
- 1.10.1
- 1.11.0
- 1.11.0rc1
- 1.11.1
- 1.12.0
- 1.12.0rc1
- 1.12.1
- 1.12.1rc1
- 1.12.2
- 1.12.3
- 1.12.4
- 1.12.4rc1
- 1.13.0
- 1.13.0rc1
- 1.13.0rc2
- 1.13.0rc3
- 1.14.0
- 1.14.0rc1
- 1.14.0rc2
- 1.15.0
- 1.15.0rc1
- 1.15.1
- 1.15.2
- 1.16.0
- 1.16.0rc1
- 1.16.0rc2
- 1.16.1
- 1.17.0
- 1.17.0rc1
- 1.18.0
- 1.18.0rc1
- 1.18.0rc2
- 1.19.0
- 1.19.0rc1
- 1.19.1
- 1.19.1rc1
- 1.19.2
- 1.19.3
- 1.2.0
- 1.2.0rc1
- 1.2.0rc2
- 1.2.1
- 1.20.0
- 1.20.0rc1
- 1.20.0rc2
- 1.20.0rc3
- 1.20.0rc4
- 1.20.0rc5
- 1.20.1
- 1.21.0
- 1.21.0rc1
- 1.21.0rc2
- 1.21.0rc3
- 1.21.1
- 1.21.2
- 1.22.0
- 1.22.0rc1
- 1.22.0rc2
- 1.22.1
- 1.23.0
- 1.23.0rc1
- 1.23.1
- 1.24.0
- 1.24.0rc1
- 1.24.0rc2
- 1.25.0
- 1.25.0rc1
- 1.26.0
- 1.26.0rc1
- 1.26.0rc2
- 1.27.0
- 1.27.0rc1
- 1.27.0rc2
- 1.28.0
- 1.28.0rc1
- 1.29.0
- 1.29.0rc1
- 1.3.0
- 1.3.0rc1
- 1.3.1
- 1.30.0
- 1.30.0rc1
- 1.30.1
- 1.31.0
- 1.31.0rc1
- 1.32.0
- 1.32.0rc1
- 1.32.1
- 1.32.2
- 1.33.0
- 1.33.0rc1
- 1.33.0rc2
- 1.33.1
- 1.33.2
- 1.34.0
- 1.34.0rc1
- 1.35.0
- 1.35.0rc1
- 1.35.0rc2
- 1.35.0rc3
- 1.35.1
- 1.36.0
- 1.36.0rc1
- 1.36.0rc2
- 1.37.0
- 1.37.0rc1
- 1.37.1
- 1.37.1rc1
- 1.38.0
- 1.38.0rc1
- 1.38.0rc2
- 1.38.0rc3
- 1.38.1
- 1.39.0
- 1.39.0rc1
- 1.39.0rc2
- 1.39.0rc3
- 1.4.0
- 1.4.0rc1
- 1.4.0rc2
- 1.4.1
- 1.4.1rc1
- 1.40.0
- 1.40.0rc1
- 1.40.0rc2
- 1.40.0rc3
- 1.41.0
- 1.41.0rc1
- 1.41.1
- 1.42.0
- 1.42.0rc1
- 1.42.0rc2
- 1.43.0
- 1.43.0rc1
- 1.43.0rc2
- 1.44.0
- 1.44.0rc1
- 1.44.0rc2
- 1.44.0rc3
- 1.45.0
- 1.45.0rc1
- 1.45.0rc2
- 1.45.1
- 1.46.0
- 1.46.0rc1
- 1.47.0
- 1.47.0rc1
- 1.47.0rc2
- 1.47.0rc3
- 1.47.1
- 1.48.0
- 1.48.0rc1
- 1.49.0
- 1.49.0rc1
- 1.49.2
- 1.5.0
- 1.5.0rc1
- 1.5.0rc2
- 1.5.1
- 1.50.0
- 1.50.0rc1
- 1.50.0rc2
- 1.50.1
- 1.50.2
- 1.51.0
- 1.51.0rc1
- 1.51.0rc2
- 1.52.0
- 1.52.0rc1
- 1.53.0
- 1.53.0rc1
- 1.54.0
- 1.54.0rc1
- 1.55.0
- 1.55.0rc1
- 1.55.1
- 1.55.2
- 1.56.0
- 1.56.0rc1
- 1.57.0
- 1.57.0rc1
- 1.57.1
- 1.58.0
- 1.58.0rc2
- 1.58.1
- 1.59.0
- 1.59.0rc1
- 1.59.0rc2
- 1.59.1
- 1.6.0
- 1.6.0rc1
- 1.6.0rc2
- 1.6.1
- 1.60.0
- 1.60.0rc1
- 1.60.0rc2
- 1.61.0
- 1.61.0rc1
- 1.61.1
- 1.62.0
- 1.62.0rc1
- 1.62.0rc2
- 1.62.0rc3
- 1.63.0
- 1.63.0rc1
- 1.63.1
- 1.64.0
- 1.64.0rc1
- 1.64.0rc2
- 1.65.0
- 1.65.0rc1
- 1.65.0rc2
- 1.66.0
- 1.66.0rc1
- 1.66.0rc2
- 1.67.0
- 1.67.0rc1
- 1.68.0
- 1.68.0rc1
- 1.68.0rc2
- 1.69.0
- 1.69.0rc1
- 1.69.0rc2
- 1.69.0rc4
- 1.7.0
- 1.7.0rc1
- 1.7.0rc2
- 1.7.1
- 1.7.2
- 1.7.3
- 1.70.0
- 1.70.0rc1
- 1.70.0rc2
- 1.70.1
- 1.71.0
- 1.71.0rc1
- 1.71.0rc2
- 1.72.0
- 1.72.0rc1
- 1.73.0
- 1.73.0rc2
- 1.74.0rc1
- 1.8.0
- 1.8.0rc1
- 1.9.0
- 1.9.0.dev1
- 1.9.0.dev2
- 1.9.0rc1
- 1.9.1
- Affected ranges
- ECOSYSTEM: < 1.74.0
Update to 1.74.0
matrix-synapse Ubuntu:Pro:18.04:LTS
- Versions
- 0.19.2+dfsg-6
- 0.24.0+dfsg-1
- 0.24.0+dfsg-1ubuntu0.1~esm1
- 0.24.0+dfsg-1ubuntu0.1~esm4
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
matrix-synapse Ubuntu:Pro:20.04:LTS
- Versions
- 1.3.0-1
- 1.4.0-1
- 1.5.0-1
- 1.5.1-1
- 1.6.0-1
- 1.6.1-1
- 1.7.0-2
- 1.7.1-1
- 1.7.2-1
- 1.7.3-1
- 1.8.0-1
- 1.9.0-1
- 1.9.1-1
- 1.10.0-1
- 1.10.0-2
- 1.11.0-1
- 1.11.0-1ubuntu0.1~esm2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
matrix-synapse Ubuntu:22.04:LTS
- Versions
- 1.39.0-1
- 1.47.0-2
- 1.47.1-1
- 1.48.0-1
- 1.49.0-1
- 1.49.2-1
- 1.50.1-1
- 1.50.2-1
- 1.51.0-1
- 1.52.0-1
- 1.53.0-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
Original sources
- https://github.com/matrix-org/synapse/security/advisories/GHSA-f3wc-3vxv-xmvr
- https://github.com/matrix-org/synapse/issues/14492
- https://github.com/matrix-org/synapse/pull/14642
- https://lists.fedoraproject.org/archives/list/[email protected]/message/UJIJRP5ZH6B3KGFLHCAKR2IX2Y4Z25QD/
- https://nvd.nist.gov/vuln/detail/CVE-2023-32323