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Security Advisories: GSA_kwCzR0hTQS1jcHB3LTJtZjgtcXBtNc4AAq-J
Improper Verification of Cryptographic Signature in matrix-synapse
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.
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1jcHB3LTJtZjgtcXBtNc4AAq-J
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: over 1 year ago
Updated: 23 days ago
CVSS Score: 8.6
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
Identifiers: GHSA-cppw-2mf8-qpm5, CVE-2019-18835
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/advisories/GHSA-cppw-2mf8-qpm5
Affected Packages
pypi:matrix-synapse
Versions: < 1.5.0Fixed in: 1.5.0