CVE-2021-29471— synapse 安全特征问题漏洞

Denial of service in Matrix Synapse

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 1.33.2 "Push rules" can specify conditions under which they will match, including `event_match`, which matches event content against a pattern including wildcards. Certain patterns can cause very poor performance in the matching engine, leading to a denial-of-service when processing moderate length events. The issue is patched in version 1.33.2. A potential workaround might be to prevent users from making custom push rules, by blocking such requests at a reverse-proxy.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

未加控制的资源消耗(资源穷尽)

synapse 安全特征问题漏洞

synapse是一个应用程序。用于开放式联合即时消息和VoIP Synapse 1.33.2版本之前存在安全特征问题漏洞。该漏洞远程程序在处理中等长度的事件时导致拒绝服务。

N/A

N/A