製品・ソフトウェアに関する情報
wire-server における情報漏えいに関する脆弱性
Title wire-server における情報漏えいに関する脆弱性
Summary

wire-server には、情報漏えいに関する脆弱性が存在します。

Possible impacts 情報を取得される可能性があります。
Solution

ベンダより正式な対策が公開されています。ベンダ情報を参照して適切な対策を実施してください。

Publication Date March 2, 2021, midnight
Registration Date Dec. 6, 2021, 4:04 p.m.
Last Update Dec. 6, 2021, 4:04 p.m.
CVSS3.0 : 警告
Score 6.5
Vector CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS2.0 : 警告
Score 4
Vector AV:N/AC:L/Au:S/C:P/I:N/A:N
Affected System
Wire Swiss GmbH
wire-server 2021/02/16 から 2021/03/02 より前
CVE (情報セキュリティ 共通脆弱性識別子)
CWE (共通脆弱性タイプ一覧)
ベンダー情報
Change Log
No Changed Details Date of change
1 [2021年12月06日]
  掲載
Dec. 6, 2021, 4:04 p.m.

NVD Vulnerability Information
CVE-2021-21396
Summary

wire-server is an open-source back end for Wire, a secure collaboration platform. In wire-server from version 2021-02-16 and before version 2021-03-02, the client metadata of all users was exposed in the `GET /users/list-clients` endpoint. The endpoint could be used by any logged in user who could request client details of any other user (no connection required) as far as they can find their User ID. The exposed metadata included id, class, type, location, time, and cookie. A user on a Wire backend could use this endpoint to find registration time and location for each device for a given list of users. As a workaround, remove `/list-clients` from nginx config. This has been fixed in version 2021-03-02.

Publication Date March 27, 2021, 7:15 a.m.
Registration Date March 27, 2021, 12:02 p.m.
Last Update Nov. 21, 2024, 2:48 p.m.
Affected software configurations
Configuration1 or higher or less more than less than
cpe:2.3:a:wire:wire_server:*:*:*:*:*:*:*:* 2021-02-16 2021-03-02
Related information, measures and tools
Common Vulnerabilities List