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.

CVSS v3.0 6.5 MEDIUM
CVSS v2.0 4.0 MEDIUM

6.5^/10

CVSS v3.0 : MEDIUM

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

4.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:S/C:P/I:N/A:N

Exploitability : 8.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

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

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Configurations

Configuration 1 (hide)

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

Information

Published : 2021-07-12 12:15

Updated : 2022-07-02 12:58

NVD link : CVE-2021-32689

Mitre link : CVE-2021-32689

JSON object : View

CWE

NVD-CWE-Other

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Products Affected

nextcloud

talk

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