Product:

Synapse

(Matrix)
Repositories https://github.com/matrix-org/synapse
#Vulnerabilities 33
Date Id Summary Products Score Patch Annotated
2023-09-27 CVE-2023-42453 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... Fedora, Synapse 4.3
2023-10-10 CVE-2023-45129 Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. Prior to version 1.94.0, a malicious server ACL event can impact performance temporarily or permanently leading to a persistent denial of service. Homeservers running on a closed federation (which presumably do not need to use server ACLs) are not affected. Server administrators are advised to upgrade to Synapse 1.94.0 or later. As a workaround, rooms with malicious server ACL events can be... Fedora, Synapse 4.9
2023-10-31 CVE-2023-43796 Synapse is an open-source Matrix homeserver Prior to versions 1.95.1 and 1.96.0rc1, cached device information of remote users can be queried from Synapse. This can be used to enumerate the remote users known to a homeserver. System administrators are encouraged to upgrade to Synapse 1.95.1 or 1.96.0rc1 to receive a patch. As a workaround, the `federation_domain_whitelist` can be used to limit federation traffic with a homeserver. Fedora, Synapse 5.3
2018-09-18 CVE-2018-16515 Matrix Synapse before 0.33.3.1 allows remote attackers to spoof events and possibly have unspecified other impacts by leveraging improper transaction and event signature validation. Debian_linux, Synapse 8.8
2019-03-21 CVE-2019-5885 Matrix Synapse before 0.34.0.1, when the macaroon_secret_key authentication parameter is not set, uses a predictable value to derive a secret key and other secrets which could allow remote attackers to impersonate users. Fedora, Synapse 7.5
2019-11-08 CVE-2019-18835 Matrix Synapse before 1.5.0 mishandles signature checking on some federation APIs. Events sent over /send_join, /send_leave, and /invite may not be correctly signed, or may not come from the expected servers. Synapse N/A
2019-05-09 CVE-2019-11842 An issue was discovered in Matrix Sydent before 1.0.3 and Synapse before 0.99.3.1. Random number generation is mishandled, which makes it easier for attackers to predict a Sydent authentication token or a Synapse random ID. Sydent, Synapse 7.5
2018-06-14 CVE-2018-12423 In Synapse before 0.31.2, unauthorised users can hijack rooms when there is no m.room.power_levels event in force. Synapse 7.5
2018-06-13 CVE-2018-12291 The on_get_missing_events function in handlers/federation.py in Matrix Synapse before 0.31.1 has a security bug in the get_missing_events federation API where event visibility rules were not applied correctly. Synapse 7.5
2018-05-02 CVE-2018-10657 Matrix Synapse before 0.28.1 is prone to a denial of service flaw where malicious events injected with depth = 2^63 - 1 render rooms unusable, related to federation/federation_base.py and handlers/message.py, as exploited in the wild in April 2018. Synapse 7.5