Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2021-22877

A missing user check in Nextcloud prior to 20.0.6 inadvertently populates a user's own credentials for other users external storage configuration when not already configured yet.

Published

2021-03-03T18:15:14.707

Last Modified

2024-11-21T05:50:49.190

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.5 (MEDIUM)

CVSSv2 Vector

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

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

Exploitability Score

8.0

Impact Score

4.9

Weaknesses

Type: Secondary
CWE-284
Type: Primary
CWE-862

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	nextcloud	nextcloud_server	< 20.0.6	Yes
Operating System	fedoraproject	fedora	34	Yes

References

https://github.com/nextcloud/server/issues/24600 Exploit, Issue Tracking, Patch, Third Party Advisory ([email protected])
https://github.com/nextcloud/server/pull/25224 Patch, Third Party Advisory ([email protected])
https://hackerone.com/reports/1061591 Issue Tracking, Third Party Advisory ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L6BO6P6MP2MOWA6PZRXX32PLWPXN5O4S/ ([email protected])
https://nextcloud.com/security/advisory/?id=NC-SA-2021-004 Broken Link, Vendor Advisory ([email protected])
https://github.com/nextcloud/server/issues/24600 Exploit, Issue Tracking, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/nextcloud/server/pull/25224 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://hackerone.com/reports/1061591 Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L6BO6P6MP2MOWA6PZRXX32PLWPXN5O4S/ (af854a3a-2127-422b-91ae-364da2661108)
https://nextcloud.com/security/advisory/?id=NC-SA-2021-004 Broken Link, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)