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CVE-2021-22877

Date: March 3, 2021

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.

Language: JS

Severity Score

Related Resources (8)

https://github.com/nextcloud/server/issues/24600
https://hackerone.com/reports/1061591
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L6BO6P6MP2MOWA6PZRXX32PLWPXN5O4S/
https://github.com/nextcloud/server/pull/25224
https://nvd.nist.gov/vuln/detail/CVE-2021-22877
https://nextcloud.com/security/advisory/?id=NC-SA-2021-004
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L6BO6P6MP2MOWA6PZRXX32PLWPXN5O4S/
https://www.mend.io/vulnerability-database/CVE-2021-22877

Severity Score

Weakness Type (CWE)

Improper Access Control

CWE-284

Improper Privilege Management

CWE-269

Missing Authorization

CWE-862

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): HIGH
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): SINGLE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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