Vulnerability Monitor

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CVE-2021-32726

Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.011, and 21.0.3, webauthn tokens were not deleted after a user has been deleted. If a victim reused an earlier used username, the previous user could gain access to their account. The issue was fixed in versions 19.0.13, 20.0.11, and 21.0.3. There are no known workarounds.

Published

2021-07-12T20:15:10.037

Last Modified

2024-11-21T06:07:36.587

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.1 (HIGH)

CVSSv2 Vector

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

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

6.4

Weaknesses

Type: Secondary
CWE-708
Type: Primary
CWE-287

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	nextcloud	nextcloud_server	< 19.0.13	Yes
Application	nextcloud	nextcloud_server	< 20.0.11	Yes
Application	nextcloud	nextcloud_server	< 21.0.3	Yes

References

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-6qr9-c846-j8mg Third Party Advisory ([email protected])
https://github.com/nextcloud/server/pull/27532 Third Party Advisory ([email protected])
https://hackerone.com/reports/1202590 Permissions Required ([email protected])
https://security.gentoo.org/glsa/202208-17 Third Party Advisory ([email protected])
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-6qr9-c846-j8mg Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/nextcloud/server/pull/27532 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://hackerone.com/reports/1202590 Permissions Required (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/202208-17 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)