All errata/sisyphus/ALT-PU-2018-1973-2
ALT-PU-2018-1973-2

Package update matrix-synapse in branch sisyphus

Version0.31.2-alt1
Task#209421
Published2026-02-04
Max severityHIGH
Severity:

Closed issues (4)

CVE-2018-12291
HIGH7.5

The on_get_missing_events function in handlers/federation.py in Matrix Synapse before 0.31.1 has a security bug in the get_missing_events federation API where event visibility rules were not applied correctly.

Published: 2018-06-13Modified: 2024-11-21
CVSS 2.0MEDIUM 5.0
CVSS:2.0/AV:N/AC:L/Au:N/C:P/I:N/A:N
CVSS 3.xHIGH 7.5
CVSS:3.x/CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
References
CVE-2018-12423
HIGH7.5

In Synapse before 0.31.2, unauthorised users can hijack rooms when there is no m.room.power_levels event in force.

Published: 2018-06-14Modified: 2024-11-21
CVSS 2.0MEDIUM 5.0
CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:P/A:N
CVSS 3.xHIGH 7.5
CVSS:3.x/CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
References