matrix-org/synapse · Security
Improper Verification of Cryptographic Signature in matrix-synapse
- GHSA ID
- GHSA-cppw-2mf8-qpm5
- CVE ID
- CVE-2019-18835
- Severity
- high
- Published
- Updated
- CVSS
- 8.6 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
- CVSS v3
- 8.6 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
- CVSS v4
- 8.8 · 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
Description
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.
CWEs
- CWE-347 · Improper Verification of Cryptographic Signature
References
- https://nvd.nist.gov/vuln/detail/CVE-2019-18835 ↗
- https://github.com/matrix-org/synapse/pull/6262 ↗
- https://github.com/matrix-org/synapse/releases/tag/v1.5.0 ↗
- https://github.com/matrix-org/synapse/commit/172f264ed38e8bef857552f93114b4ee113a880b ↗
- https://github.com/pypa/advisory-database/tree/main/vulns/matrix-synapse/PYSEC-2019-186.yaml ↗
- https://github.com/advisories/GHSA-cppw-2mf8-qpm5 ↗