Mastadon streaming server allows OAuth clients without the `read` scope to subscribe to public channels

Mastodon is a free, open-source social network server based on ActivityPub. In Mastodon before 4.4.6, 4.3.14, and 4.2.27, the streaming server accepts serving events for public timelines to clients using any valid authentication token, even if those tokens lack the read:statuses scope. This allows OAuth clients without the read scope to subscribe to public channels and receive public timeline events. The impact is limited, as this only affects new public posts published on the public timelines and requires an otherwise valid token, but this may lead to unexpected access to public posts in a limited-federation setting. This issue has been patched in versions 4.4.6, 4.3.14, and 4.2.27. No known workarounds exist.

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

不充分权限或特权的处理不恰当

Mastodon 安全漏洞

Mastodon是Mastodon开源的一款基于ActivityPub的开源社交网络服务器。 Mastodon 4.4.6之前版本、4.3.14之前版本和4.2.27之前版本存在安全漏洞，该漏洞源于流服务器接受使用任何有效身份验证令牌为公共时间线提供服务的事件，可能导致意外访问公共帖子。

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