CVE Vulnerability

CVE-2021-21396

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.

4 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

Scope

6.5 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/wireapp/wire-server/security/advisories/GHSA-qx8q-rhq2-rg4j Patch Third Party Advisory
https://github.com/wireapp/wire-server/releases/tag/v2021-03-02 Third Party Advisory
https://github.com/wireapp/wire-server/commit/7ba2bf4140282557cf215e0b2c354d4d08cd3421 Patch Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:wire:wire_server:*:*:*:*:*:*:*:*
Information

Published : 2021-03-26 10:15

Updated : 2021-08-27 03:05

NVD link : CVE-2021-21396

Mitre link : CVE-2021-21396

Products Affected
No products.
CWE
CWE-200