CVE Vulnerability

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.

5.5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8 / Impact : 4.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact NONE

Scope

6.5 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.2 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/nextcloud/server/issues/24600 Exploit Issue Tracking
https://github.com/nextcloud/server/pull/25224 Patch Third Party Advisory
https://nextcloud.com/security/advisory/?id=NC-SA-2021-004 Broken Link Vendor Advisory
https://hackerone.com/reports/1061591 Issue Tracking Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L6BO6P6MP2MOWA6PZRXX32PLWPXN5O4S/ Mailing List Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
Information

Published : 2021-03-03 06:15

Updated : 2022-09-27 03:45

NVD link : CVE-2021-22877

Mitre link : CVE-2021-22877

Products Affected
No products.
CWE
CWE-862