Is CVE-2023-42453 actively exploited?

CVE-2023-42453 has no public evidence of in-the-wild exploitation as of 2024-11-21.

What is the CVSS score for CVE-2023-42453?

CVE-2023-42453 has a CVSS score of 3.1 (LOW severity). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N.

How do I patch CVE-2023-42453?

Patch guidance is available from matrix security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2023-42453.

CVE-2023-42453 - remediation guidance & executive summary

Q: Which products are affected by CVE-2023-42453?

3 products: matrix synapse, fedoraproject fedora, fedoraproject fedora.

Description

Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. Users were able to forge read receipts for any event (if they knew the room ID and event ID). Note that the users were not able to view the events, but simply mark it as read. This could be confusing as clients will show the event as read by the user, even if they are not in the room. This issue has been patched in version 1.93.0. Users are advised to upgrade. There are no known workarounds for this issue.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack Vector: network
Complexity: high
Privileges: low
User Action: none
Scope: unchanged
Confidentiality: none
Integrity: low
Availability: none
Weaknesses: CWE-285NVD-CWE-Other

Metadata

Primary Vendor: MATRIX
Published: 9/27/2023
Last Modified: 11/21/2024
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2023-42453

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary