CVE Vulnerability

CVE-2021-32689

Nextcloud Talk is a fully on-premises audio/video and chat communication service. In versions prior to 11.2.2, if a user was able to reuse an earlier used username, they could get access to any chat message sent to the previous user with this username. The issue was patched in versions 11.2.2 and 11.3.0. As a workaround, don't allow users to choose usernames themselves. This is the default behaviour of Nextcloud, but some user providers may allow doing so.

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/nextcloud/spreed/pull/5633 Patch Third Party Advisory
https://hackerone.com/reports/1200700 Permissions Required
https://github.com/nextcloud/spreed/releases/tag/v11.3.0 Release Notes Third Party Advisory
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xv6f-344w-895c Third Party Advisory
https://github.com/nextcloud/spreed/releases/tag/v11.2.2 Release Notes Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:nextcloud:talk:*:*:*:*:*:*:*:*
Information

Published : 2021-07-12 07:15

Updated : 2022-07-02 07:58

NVD link : CVE-2021-32689

Mitre link : CVE-2021-32689

Products Affected
No products.
CWE
NVD-CWE-Other