CVE-2018-16515
unknown
CVSS v3
—
CVSS v4 NEW
—
VIR risk
—
Description
Matrix Synapse Improper Signature Validation
Predictions
Exploit likelihood
30%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Debian Fixed 2 releases
| Version | Status | Fixed in |
|---|---|---|
| sid | Fixed | 0.33.3.1-1 |
| forky | Fixed | 0.33.3.1-1 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| PyPI | matrix-synapse | >=0.33.3,<0.33.3.1 | 0.33.3.1 |
| PyPI | matrix-synapse | <0.33.2.1 | 0.33.2.1 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2018-16515
- https://github.com/matrix-org/synapse/issues/3796#event-1833126269
- https://github.com/matrix-org/synapse/commit/5bf8bc79ebc22c61968f2eb487714813fccbdb9b
- https://github.com/matrix-org/synapse/commit/804dd41e18c449e711e443398b95c9f6c68b6fa2
- https://github.com/matrix-org/synapse/commit/a5a0bf5cf71caed3c4e3677d2bce667c147dadfc
- https://github.com/matrix-org/synapse/commit/c127c8d0421f0228a46ebbe280c9537e8d8ea42b
- https://github.com/matrix-org/synapse
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IRW7YR2H3ASUSYX4AO4KMY3FNVDNYW3P
- https://matrix.org/blog/2018/09/06/critical-security-update-synapse-0-33-3-1
- https://security-tracker.debian.org/tracker/CVE-2018-16515
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.