Matrix Synapse Denial of Service Vulnerability (CNVD-2022-60674)

Matrix Synapse is a Matrix Management Server implementation from the Matrix Foundation in the U.K. A denial of service vulnerability exists in versions of Matrix Synapse prior to 1.61.1, which stems from infinite recursion, where URL previews of certain web pages may exhaust the available stack...

FreeBSD : py-matrix-synapse -- unbounded recursion in urlpreview (07c0d782-f758-11ec-acaa-901b0e9408dc)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 07c0d782-f758-11ec-acaa-901b0e9408dc advisory. - Synapse is an open source home server implementation for the Matrix chat network. In versions prior t...

Matrix Synapse 安全漏洞

Matrix Synapse is a Matrix Management Server implementation from the Matrix Foundation in the U.K. A denial of service vulnerability exists in versions of Matrix Synapse prior to 1.61.1, which stems from infinite recursion, where URL previews of certain web pages may exhaust the available stack...

GHSA-CPPW-2MF8-QPM5 Improper Verification of Cryptographic Signature in matrix-synapse

Matrix Synapse before 1.5.0 mishandles signature checking on some federation APIs. Events sent over /sendjoin, /sendleave, and /invite may not be correctly signed, or may not come from the expected servers...

matrix-sydent and matrix-synapse Use Cryptographically Weak PRNG

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...

GHSA-VMCC-4P4X-X7WG Matrix Synapse DoS

Matrix Synapse before 0.28.1 is prone to a denial of service flaw where malicious events injected with depth = 263 - 1 render rooms unusable, related to federation/federationbase.py and handlers/message.py, as exploited in the wild in April 2018...

Matrix Synapse DoS

Matrix Synapse before 0.28.1 is prone to a denial of service flaw where malicious events injected with depth = 263 - 1 render rooms unusable, related to federation/federationbase.py and handlers/message.py, as exploited in the wild in April 2018...

Matrix Synapse Improper Signature Validation

Matrix Synapse before 0.33.3.1 and 0.33.2.1 allows remote attackers to spoof events and possibly have unspecified other impacts by leveraging improper transaction and event signature validation...

Matrix Synapse Security Filtering Flaw

The ongetmissingevents function in handlers/federation.py in Matrix Synapse before 0.31.1 has a security bug in the getmissingevents federation API where event visibility rules were not applied correctly...

GHSA-V8WM-G9F2-XJV4 Matrix Synapse Security Filtering Flaw

The ongetmissingevents function in handlers/federation.py in Matrix Synapse before 0.31.1 has a security bug in the getmissingevents federation API where event visibility rules were not applied correctly...

Matrix Synapse Predictable Secret Key

Matrix Synapse before 0.34.0.1, when the macaroonsecretkey 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...

GHSA-JRQM-V8CV-53WW Matrix Synapse Predictable Secret Key

Matrix Synapse before 0.34.0.1, when the macaroonsecretkey 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: Security Advisory for matrix-synapse (FEDORA-2021-9758549fce)

The remote host is missing an update for the Copyright C 2021 Greenbone Networks GmbH Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-or-later This program is free software; you can...

Fedora: Security Advisory for matrix-synapse (FEDORA-2021-2f9dcdbace)

The remote host is missing an update for the Copyright C 2021 Greenbone Networks GmbH Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-or-later This program is free software; you can...

Path Traversal

matrix-synapse is vulnerable to path traversal. An attacker can download files from a remote server into an arbitrary directory when a media repository is enabled, potentially outside of the configured directory...

Path traversal in Matrix Synapse

Impact Synapse instances with the media repository enabled can be tricked into downloading a file from a remote server into an arbitrary directory, potentially outside the media store directory. The last two directories and file name of the path are chosen randomly by Synapse and cannot be...

GHSA-3HFW-X7GX-437C Path traversal in Matrix Synapse

Impact Synapse instances with the media repository enabled can be tricked into downloading a file from a remote server into an arbitrary directory, potentially outside the media store directory. The last two directories and file name of the path are chosen randomly by Synapse and cannot be...

CVE-2021-41281 Path traversal in Matrix Synapse

Synapse is a package for Matrix homeservers written in Python 3/Twisted. Prior to version 1.47.1, Synapse instances with the media repository enabled can be tricked into downloading a file from a remote server into an arbitrary directory. No authentication is required for the affected endpoint. T...

Fedora: Security Advisory for matrix-synapse (FEDORA-2021-f12fdca1bf)

The remote host is missing an update for the Copyright C 2021 Greenbone Networks GmbH Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-or-later This program is free software; you can...

Fedora: Security Advisory for matrix-synapse (FEDORA-2021-2e8ed15b14)

The remote host is missing an update for the Copyright C 2021 Greenbone Networks GmbH Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-or-later This program is free software; you can...