critical9.8
CVE-2019-18835
Improper Verification of Cryptographic Signature in matrix-synapse
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | matrix-synapse | < 1.5.0 | 1.5.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Matrix | Synapse | before 1.5.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/matrix-org/synapse/pull/6262
- https://github.com/matrix-org/synapse/releases/tag/v1.5.0
- https://github.com/advisories/GHSA-cppw-2mf8-qpm5
- https://nvd.nist.gov/vuln/detail/CVE-2019-18835
- https://github.com/matrix-org/synapse/commit/172f264ed38e8bef857552f93114b4ee113a880b
- https://github.com/pypa/advisory-database/tree/main/vulns/matrix-synapse/PYSEC-2019-186.yaml