CVE-2021-39164

描述

Matrix is an ecosystem for open federated Instant Messaging and Voice over IP. In versions 1.41.0 and prior, unauthorised users can access the membership (list of members, with their display names) of a room if they know the ID of the room. The vulnerability is limited to rooms with `shared` history visibility. Furthermore, the unauthorised user must be using an account on a vulnerable homeserver that is in the room. Server administrators should upgrade to 1.41.1 or later in order to receive the patch. One workaround is available. Administrators of servers that use a reverse proxy could, with potentially unacceptable loss of functionality, block the endpoints: `/_matrix/client/r0/rooms/{room_id}/members` with `at` query parameter, and `/_matrix/client/unstable/rooms/{room_id}/members` with `at` query parameter.

如何修補 CVE-2021-39164

要修補 CVE-2021-39164,請將受影響套件升級到下列已修補版本。

• —升級至 1.41.1 或更新版本

CVE-2021-39164 正在被利用嗎?

低 — EPSS 為 1.5%,目前沒有觀察到大規模利用活動。

受影響套件(1)

• from 0, < 1.41.1

CVSS 分數

參考連結(8)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2021-39164
• PATCHgithub.com/matrix-org/synapse
• WEBgithub.com/matrix-org/synapse/commit/cb35df940a
• WEBgithub.com/matrix-org/synapse/releases/tag/v1.41.1
• WEB