Total
30 CVE
| CVE | Vendors | Products | Updated | CVSS v2 | CVSS v3 |
|---|---|---|---|---|---|
| CVE-2020-26891 | 1 Matrix | 1 Synapse | 2024-02-04 | 4.3 MEDIUM | 6.1 MEDIUM |
| AuthRestServlet in Matrix Synapse before 1.21.0 is vulnerable to XSS due to unsafe interpolation of the session GET parameter. This allows a remote attacker to execute an XSS attack on the domain Synapse is hosted on, by supplying the victim user with a malicious URL to the /_matrix/client/r0/auth/*/fallback/web or /_matrix/client/unstable/auth/*/fallback/web Synapse endpoints. | |||||
| CVE-2021-21274 | 2 Fedoraproject, Matrix | 2 Fedora, Synapse | 2024-02-04 | 4.3 MEDIUM | 6.5 MEDIUM |
| Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.25.0, a malicious homeserver could redirect requests to their .well-known file to a large file. This can lead to a denial of service attack where homeservers will consume significantly more resources when requesting the .well-known file of a malicious homeserver. This affects any server which accepts federation requests from untrusted servers. Issue is resolved in version 1.25.0. As a workaround the `federation_domain_whitelist` setting can be used to restrict the homeservers communicated with over federation. | |||||
| CVE-2021-21273 | 2 Fedoraproject, Matrix | 2 Fedora, Synapse | 2024-02-04 | 5.8 MEDIUM | 6.1 MEDIUM |
| Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.25.0, requests to user provided domains were not restricted to external IP addresses when calculating the key validity for third-party invite events and sending push notifications. This could cause Synapse to make requests to internal infrastructure. The type of request was not controlled by the user, although limited modification of request bodies was possible. For the most thorough protection server administrators should remove the deprecated `federation_ip_range_blacklist` from their settings after upgrading to Synapse v1.25.0 which will result in Synapse using the improved default IP address restrictions. See the new `ip_range_blacklist` and `ip_range_whitelist` settings if more specific control is necessary. | |||||
| CVE-2019-18835 | 1 Matrix | 1 Synapse | 2024-02-04 | 7.5 HIGH | 9.8 CRITICAL |
| 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. | |||||
| CVE-2019-11842 | 1 Matrix | 2 Sydent, Synapse | 2024-02-04 | 5.0 MEDIUM | 7.5 HIGH |
| 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. | |||||
| CVE-2019-5885 | 2 Fedoraproject, Matrix | 2 Fedora, Synapse | 2024-02-04 | 5.0 MEDIUM | 7.5 HIGH |
| 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. | |||||
| CVE-2018-16515 | 2 Debian, Matrix | 2 Debian Linux, Synapse | 2024-02-04 | 6.5 MEDIUM | 8.8 HIGH |
| 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. | |||||
| CVE-2018-12291 | 1 Matrix | 1 Synapse | 2024-02-04 | 5.0 MEDIUM | 7.5 HIGH |
| 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. | |||||
| CVE-2018-12423 | 1 Matrix | 1 Synapse | 2024-02-04 | 5.0 MEDIUM | 7.5 HIGH |
| In Synapse before 0.31.2, unauthorised users can hijack rooms when there is no m.room.power_levels event in force. | |||||
| CVE-2018-10657 | 1 Matrix | 1 Synapse | 2024-02-04 | 5.0 MEDIUM | 7.5 HIGH |
| 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. | |||||