CVE-2019-18835 - Vulnerability Details - OpenCVE

Description

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.

Published: 2019-11-07

Score: 9.8 Critical

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

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

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2019-0083	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.
Github GHSA	GHSA-cppw-2mf8-qpm5	Improper Verification of Cryptographic Signature in matrix-synapse
Ubuntu USN	USN-6076-1	Synapse vulnerabilities

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.00163.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://github.com/matrix-org/synapse/pull/6262
https://github.com/matrix-org/synapse/releases/tag/v1.5.0

History

No history.

Subscriptions

Matrix Synapse

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2019-11-07T23:12:07.000Z

Updated: 2024-08-05T02:02:39.952Z

Reserved: 2019-11-07T00:00:00.000Z

Link: CVE-2019-18835

Vulnrichment

No data.

NVD

Status : Modified

Published: 2019-11-08T00:15:10.413

Modified: 2024-11-21T04:33:40.683

Link: CVE-2019-18835

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-345

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