Improper Authorization Affecting synapse package, versions <1.93.0-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.08% (36th percentile)

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  • Snyk IDSNYK-ALPINE321-SYNAPSE-8489601
  • published6 Dec 2024
  • disclosed27 Sept 2023

Introduced: 27 Sep 2023

CVE-2023-42453  (opens in a new tab)
CWE-285  (opens in a new tab)

How to fix?

Upgrade Alpine:3.21 synapse to version 1.93.0-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream synapse package and not the synapse package as distributed by Alpine. See How to fix? for Alpine:3.21 relevant fixed versions and status.

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 Scores

version 3.1