All errata/sisyphus/ALT-PU-2020-1099-2
ALT-PU-2020-1099-2

Package update matrix-synapse in branch sisyphus

Version1.8.0-alt1
Task#245100
Published2026-02-04
Max severityCRITICAL
Severity:

Closed issues (2)

CVE-2019-18835
CRITICAL9.8

Matrix Synapse before 1.5.0 mishandles signature checking on some federation APIs. Events sent over /send_join, /send_leave, and /invite may not be correctly signed, or may not come from the expected servers.

Published: 2019-11-08Modified: 2024-11-21
CVSS 2.0HIGH 7.5
CVSS:2.0/AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS 3.xCRITICAL 9.8
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
GHSA-cppw-2mf8-qpm5
HIGH8.8

Improper Verification of Cryptographic Signature in matrix-synapse

Published: 2022-05-25Modified: 2024-09-24
CVSS 3.xHIGH 8.8
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
CVSS 4.0HIGH 8.8
CVSS:4.0/CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N
References