vulnerability
FreeBSD: VID-278561d7-b261-11eb-b788-901b0e934d69 (CVE-2021-29471): py-matrix-synapse -- malicious push rules may be used for a denial of service attack.
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:N/I:N/A:P) | May 11, 2021 | Nov 4, 2022 | Dec 10, 2025 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
May 11, 2021
Added
Nov 4, 2022
Modified
Dec 10, 2025
Description
Matrix developers report: "Push rules" can specify conditions under which they will match, including event_match, which matches event content against a pattern including wildcards. Certain patterns can cause very poor performance in the matching engine, leading to a denial-of-service when processing moderate length events.
Solutions
freebsd-upgrade-package-py36-matrix-synapsefreebsd-upgrade-package-py37-matrix-synapsefreebsd-upgrade-package-py38-matrix-synapsefreebsd-upgrade-package-py39-matrix-synapse
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