CVSS: 5.0EPSS: 0%CPEs: 1EXPL: 1CVE-2023-32323 – Synapse Outgoing federation to specific hosts can be disabled by sending malicious invites
https://notcve.org/view.php?id=CVE-2023-32323
Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. A malicious user on a Synapse homeserver X with permission to create certain state events can disable outbound federation from X to an arbitrary homeserver Y. Synapse instances with federation disabled are not affected. In versions of Synapse up to and including 1.73, Synapse did not limit the size of `invite_room_state`, meaning that it was possible to create an arbitrarily large invite event. Synapse 1.74 refuses to create oversized `invite_room_state` fields. • https://github.com/matrix-org/synapse/issues/14492 https://github.com/matrix-org/synapse/pull/14642 https://github.com/matrix-org/synapse/security/advisories/GHSA-f3wc-3vxv-xmvr https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UJIJRP5ZH6B3KGFLHCAKR2IX2Y4Z25QD • CWE-20: Improper Input Validation •
CVSS: 6.8EPSS: 0%CPEs: 2EXPL: 2CVE-2022-47632 – Razer Synapse 3.7.0731.072516 Local Privilege Escalation
https://notcve.org/view.php?id=CVE-2022-47632
Razer Synapse before 3.7.0830.081906 allows privilege escalation due to an unsafe installation path, improper privilege management, and improper certificate validation. Attackers can place malicious DLLs into %PROGRAMDATA%\Razer\Synapse3\Service\bin if they do so before the service is installed and if they deny write access for the SYSTEM user. Although the service will not start if the malicious DLLs are unsigned, it suffices to use self-signed DLLs. The validity of the DLL signatures is not checked. As a result, local Windows users can abuse the Razer driver installer to obtain administrative privileges on Windows. • http://packetstormsecurity.com/files/170772/Razer-Synapse-3.7.0731.072516-Local-Privilege-Escalation.html http://packetstormsecurity.com/files/174696/Razer-Synapse-Race-Condition-DLL-Hijacking.html http://seclists.org/fulldisclosure/2023/Sep/6 https://syss.de https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2022-047.txt • CWE-427: Uncontrolled Search Path Element •
CVSS: 6.5EPSS: 0%CPEs: 1EXPL: 0CVE-2022-41952 – Uncontrolled Resource Consumption in Matrix Synapse
https://notcve.org/view.php?id=CVE-2022-41952
Synapse before 1.52.0 with URL preview functionality enabled will attempt to generate URL previews for media stream URLs without properly limiting connection time. Connections will only be terminated after `max_spider_size` (default: 10M) bytes have been downloaded, which can in some cases lead to long-lived connections towards the streaming media server (for instance, Icecast). This can cause excessive traffic and connections toward such servers if their stream URL is, for example, posted to a large room with many Synapse instances with URL preview enabled. Version 1.52.0 implements a timeout mechanism which will terminate URL preview connections after 30 seconds. Since generating URL previews for media streams is not supported and always fails, 1.53.0 additionally implements an allow list for content types for which Synapse will even attempt to generate a URL preview. • https://github.com/matrix-org/synapse/pull/11784 https://github.com/matrix-org/synapse/pull/11936 https://github.com/matrix-org/synapse/releases/tag/v1.52.0 https://github.com/matrix-org/synapse/releases/tag/v1.53.0 https://github.com/matrix-org/synapse/security/advisories/GHSA-4822-jvwx-w47h • CWE-400: Uncontrolled Resource Consumption CWE-772: Missing Release of Resource after Effective Lifetime •
CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 0CVE-2022-31152 – Synapse vulnerable to denial of service (DoS) due to incorrect application of event authorization rules
https://notcve.org/view.php?id=CVE-2022-31152
Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. The Matrix specification specifies a list of [event authorization rules](https://spec.matrix.org/v1.2/rooms/v9/#authorization-rules) which must be checked when determining if an event should be accepted into a room. In versions of Synapse up to and including version 1.61.0, some of these rules are not correctly applied. An attacker could craft events which would be accepted by Synapse but not a spec-conformant server, potentially causing divergence in the room state between servers. Administrators of homeservers with federation enabled are advised to upgrade to version 1.62.0 or higher. • https://github.com/matrix-org/synapse/pull/13087 https://github.com/matrix-org/synapse/pull/13088 https://github.com/matrix-org/synapse/releases/tag/v1.62.0 https://github.com/matrix-org/synapse/security/advisories/GHSA-jhjh-776m-4765 • CWE-703: Improper Check or Handling of Exceptional Conditions CWE-755: Improper Handling of Exceptional Conditions •
CVSS: 6.5EPSS: 0%CPEs: 3EXPL: 0CVE-2022-31052 – URL previews can crash Synapse media repositories or Synapse monoliths
https://notcve.org/view.php?id=CVE-2022-31052
Synapse is an open source home server implementation for the Matrix chat network. In versions prior to 1.61.1 URL previews of some web pages can exhaust the available stack space for the Synapse process due to unbounded recursion. This is sometimes recoverable and leads to an error for the request causing the problem, but in other cases the Synapse process may crash altogether. It is possible to exploit this maliciously, either by malicious users on the homeserver, or by remote users sending URLs that a local user's client may automatically request a URL preview for. Remote users are not able to exploit this directly, because the URL preview endpoint is authenticated. • https://github.com/matrix-org/synapse/commit/fa1308061802ac7b7d20e954ba7372c5ac292333 https://github.com/matrix-org/synapse/security/advisories/GHSA-22p3-qrh9-cx32 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7EARKKJZ2W7WUITFDT4EG4NVATFYJQHF https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QGSDQ4YAITCUACAB7SXQZDJIU3IQ4CJD https://spec.matrix.org/v1.2/client-server-api/#get_matrixmediav3preview_url • CWE-674: Uncontrolled Recursion •