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.

CVSS v3 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/matrix-org/synapse/pull/6262	Patch Third Party Advisory
https://github.com/matrix-org/synapse/releases/tag/v1.5.0	Release Notes Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:matrix:synapse:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2019-11-08 00:15

Updated : 2023-12-10 13:13

NVD link : CVE-2019-18835

Mitre link : CVE-2019-18835

CVE.ORG link : CVE-2019-18835

JSON object : View

Products Affected

matrix

synapse

CWE

CWE-345

Insufficient Verification of Data Authenticity

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