CVE-2019-5885
HIGH7.5EPSS 0.77%Matrix Synapse Predictable Secret Key
Published: 5/13/2022Modified: 5/20/2026
Also known as:DEBIAN-CVE-2019-5885
Description
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.
Affected packages (3)
- Debian/matrix-synapsefrom 0, < 0.34.1.1-1
- PyPI/matrix-synapsefrom 0, < 0.34.0.1
- PyPI/matrix-synapsefrom 0, < 0.34.0.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
References (16)
- ADVISORYhttps://matrix.org/blog/2019/01/10/critical-security-update-synapse-0-34-0-1-synapse-0-34-1-1/
- ADVISORYhttps://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/
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2019-5885
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2019-5885
- PATCHhttps://github.com/matrix-org/synapse
- WEBhttps://github.com/matrix-org/synapse/blob/67f9e5293ea6650b2ec284c0b7503f3f3eade94b/docs/changelogs/CHANGES-pre-1.0.md?plain=1#L460
- WEBhttps://github.com/matrix-org/synapse/issues/4664
- WEBhttps://github.com/matrix-org/synapse/pull/4315
- WEBhttps://github.com/matrix-org/synapse/pull/4373
- WEBhttps://github.com/pypa/advisory-database/tree/main/vulns/matrix-synapse/PYSEC-2019-187.yaml
- WEBhttps://lists.fedoraproject.org/archives/list/[email protected]/message/32Y6KD3OAHCG5P33HC2QEX3NUZOSXCGZ
- WEBhttps://lists.fedoraproject.org/archives/list/[email protected]/message/32Y6KD3OAHCG5P33HC2QEX3NUZOSXCGZ/
- WEBhttps://lists.fedoraproject.org/archives/list/[email protected]/message/VMCLO5PUPBA756UKY72PKUWL4RRM4W6K
- WEBhttps://lists.fedoraproject.org/archives/list/[email protected]/message/VMCLO5PUPBA756UKY72PKUWL4RRM4W6K/
- WEBhttps://matrix.org/blog/2019/01/10/critical-security-update-synapse-0-34-0-1-synapse-0-34-1-1
- WEBhttps://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