{"id":"CVE-2019-5885","details":"Matrix Synapse before 0.34.0.1, when the macaroon_secret_key authentication parameter is not set, uses a predictable value to derive a secret key and other secrets which could allow remote attackers to impersonate users.","aliases":["GHSA-jrqm-v8cv-53ww","PYSEC-2019-187"],"modified":"2026-04-10T04:19:36.677593Z","published":"2019-03-21T16:01:05.843Z","related":["openSUSE-SU-2024:11041-1"],"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VMCLO5PUPBA756UKY72PKUWL4RRM4W6K/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/32Y6KD3OAHCG5P33HC2QEX3NUZOSXCGZ/"},{"type":"ADVISORY","url":"https://matrix.org/blog/2019/01/10/critical-security-update-synapse-0-34-0-1-synapse-0-34-1-1/"},{"type":"ADVISORY","url":"https://matrix.org/blog/2019/01/15/further-details-on-critical-security-update-in-synapse-affecting-all-versions-prior-to-0-34-1-cve-2019-5885/"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/matrix-org/synapse","events":[{"introduced":"0"},{"fixed":"2dd30ba827baaff0284e715b43f02224630d87cc"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"0.34.0.1"}]}}],"versions":["hhs-1","hhs-2","hhs-3","hhs-5","hhs-6","hhs-7","hhs-8","v0.10.0","v0.10.0-r1","v0.10.0-r2","v0.11.0","v0.11.0-r1","v0.11.0-r2","v0.11.1","v0.12.0","v0.13.1","v0.13.2","v0.13.3","v0.14.0","v0.16.0","v0.16.1","v0.16.1-r1","v0.17.0","v0.17.1","v0.17.2","v0.17.3","v0.18.0","v0.18.1","v0.18.2","v0.18.3","v0.18.4","v0.18.5","v0.2.0","v0.2.1","v0.2.1a","v0.2.2","v0.23.0-rc1","v0.23.0-rc2","v0.25.0-rc1","v0.28.0-rc1","v0.3.0","v0.3.3","v0.3.4","v0.32.0","v0.32.0rc1","v0.32.2","v0.34.0","v0.34.0rc1","v0.34.0rc2","v0.4.1","v0.4.2","v0.5.0","v0.5.1","v0.5.2","v0.5.3","v0.5.3a","v0.5.3b","v0.5.3c","v0.5.4","v0.5.4a","v0.6.0","v0.6.0a","v0.6.0b","v0.6.1","v0.6.1a","v0.6.1b","v0.6.1c","v0.6.1d","v0.6.1e","v0.6.1f","v0.7.0","v0.7.0a","v0.7.0b","v0.7.0c","v0.7.0d","v0.7.0e","v0.7.0f","v0.7.1","v0.7.1-r1","v0.7.1-r2","v0.7.1-r3","v0.7.1-r4","v0.8.0","v0.8.1","v0.8.1-r1","v0.8.1-r2","v0.8.1-r3","v0.8.1-r4","v0.9.0","v0.9.0-r1","v0.9.0-r2","v0.9.0-r3","v0.9.0-r4","v0.9.0-r5","v0.9.1","v0.9.2","v0.9.2-r1","v0.9.2-r2","v0.9.3"],"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"28"}]},{"events":[{"introduced":"0"},{"last_affected":"29"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-5885.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"}]}