漏洞信息
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Vulnerability Title
Denial of service attack via .well-known lookups
Vulnerability Description
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.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Vulnerability Title
Matrix Synapse 资源管理错误漏洞
Vulnerability Description
Matrix Synapse是英国Matrix基金会的一款矩阵管理服务器的实现。 Synapse before version 1.25.0 存在安全漏洞,该漏洞源于恶意的homeserver会将请求重定向到一个大文件。这可能会导致拒绝服务攻击。
CVSS Information
N/A
Vulnerability Type
N/A