CVE-2023-42453

Improper validation of receipts allows forged read receipts in matrix synapse

Published: Sep 26, 2023Updated: Nov 21, 2024 Sources: CVE List NVD GHSACWE-285

3.1LOW

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:HAttack Complexity

High

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:LIntegrity

Low

A:NAvailability

None

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Weaknesses

CWE-285 NVD-CWE-Other

Affected Products

matrix

oss-project·GBaka javascript sdk, matrix irc bridge, synapse

synapseOn-premWeb App

Communications / messaging-chat

fedoraproject

oss-project·USaka fedora project

fedoraOn-premOS

Operating Systems / linux-distro

matrix-org

oss-project·DEaka synapse, matrix-js-sdk, matrix appservice irc

synapseOn-premWeb App

Communications / messaging-chat

PyPI

package-ecosystem

matrix-synapse

OSS Libraries

Exploitability

Official Patch Available

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References

https://github.com/matrix-org/synapse/pull/16327

github.com

https://github.com/matrix-org/synapse/security/advisories/GHSA-7565-cq32-vx2x

github.com

https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2AFB2Y3S2VCPCN5P2XCZTG24MBMZ7DM4/

lists.fedoraproject.org

and 10 more references View all →

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