Vulnerability Details : CVE-2019-18835
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.
Products affected by CVE-2019-18835
- cpe:2.3:a:matrix:synapse:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-18835
0.24%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 61 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-18835
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2019-18835
-
The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-18835
-
https://github.com/matrix-org/synapse/pull/6262
Improve signature checking on some federation APIs by richvdh · Pull Request #6262 · matrix-org/synapse · GitHubPatch;Third Party Advisory
-
https://github.com/matrix-org/synapse/releases/tag/v1.5.0
Release v1.5.0 · matrix-org/synapse · GitHubRelease Notes;Third Party Advisory
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