CVE-2018-12423

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Published Jun 14, 2018 CVSS 3.0 · 7.5 High EPSS 1.8% KEV · Not listed

Description

In Synapse before 0.31.2, unauthorised users can hijack rooms when there is no m.room.power_levels event in force.

Affected Products

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 solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
EUVD	EUVD-2022-3580	In Synapse before 0.31.2, unauthorised users can hijack rooms when there is no m.room.power_levels event in force.
Github GHSA	GHSA-ch5v-fhg8-7gv9	Matrix Synapse Authorization Error
Ubuntu USN	USN-6076-1	Synapse vulnerabilities

Metrics

No CVSS v4.0

No CVSS v3.1

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction None

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact Partial

Availability Impact None

This CVE is not in the KEV list.

Exploit prediction score: 1.8% (1.811% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://bugs.debian.org/901549
https://github.com/matrix-org/matrix-doc/issues/1304
https://matrix.org/blog/2018/06/14/security-update-synapse-0-31-2/

History

No history.

Subscriptions

Matrix Synapse

Weaknesses

NVD-CWE-noinfo

Sources

CVE record Updated: Sep 16, 2024, 6:24 PM

Status: PUBLISHED
Assigner: mitre
Published: Jun 14, 2018, 9:00 PM
Updated: Sep 16, 2024, 6:24 PM
Reserved: Jun 14, 2018, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 1:37 AM

Status: Modified
Published: Jun 14, 2018, 9:29 PM
Modified: Jun 17, 2026, 1:37 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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