CVE-2023-424533.1LowCWE-285

CVE-2023-42453: Improper validation of receipts allows forged read receipts in matrix synapse

matrix-org · synapse

Affected: matrix-org synapse · Exploitation: unlikely (under 1%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

0.8%probability of exploitation in the next 30 days

56th percentile

050100

Higher than 56% of scored CVEs

3.1LowCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

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.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

matrix-org · synapse>= 0.34.0, < 1.93.0

On the Atlas

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Open the Atlas

Exploitation: Unlikely (under 1%). EPSS under 1%, or no score yet.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Improper Authorization · Access Control
Vendor: matrix-org
Published: September 2023
Band: Unlikely (under 1%), September 2023

CoverageNo articles yet

No CyberSIXT article names CVE-2023-42453 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.