7.5
CVSSv3

CVE-2018-12291

Published: 13/06/2018 Updated: 03/10/2019
CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10
CVSS v3 Base Score: 7.5 | Impact Score: 3.6 | Exploitability Score: 3.9
VMScore: 445
Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N

Vulnerability Summary

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

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matrix synapse

Vendor Advisories

Debian Bug report logs - #901293 matrix-synapse: CVE-2018-12291: Improper event filtering in get_missing_events handler Package: src:matrix-synapse; Maintainer for src:matrix-synapse is Matrix Packaging Team <pkg-matrix-maintainers@listsaliothdebianorg>; Reported by: Salvatore Bonaccorso <carnil@debianorg> Date: M ...