CVE-2024-37303— Element Synapse 安全漏洞

Synapse unauthenticated writes to the media repository allow planting of problematic content

Synapse is an open-source Matrix homeserver. Synapse before version 1.106 allows, by design, unauthenticated remote participants to trigger a download and caching of remote media from a remote homeserver to the local media repository. Such content then also becomes available for download from the local homeserver in an unauthenticated way. The implication is that unauthenticated remote adversaries can use this functionality to plant problematic content into the media repository. Synapse 1.106 introduces a partial mitigation in the form of new endpoints which require authentication for media downloads. The unauthenticated endpoints will be frozen in a future release, closing the attack vector.

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

关键功能的认证机制缺失

Element Synapse 安全漏洞

Element Synapse是Element开源的一个开源 Matrix 家庭服务器实现。 Element Synapse 1.106之前版本存在安全漏洞，该漏洞源于允许未认证的远程参与者触发远程媒体下载并缓存到本地媒体库，从而使问题内容可被未认证下载。

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