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CVE-2021-22906

Good to know:

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Date: June 11, 2021

Nextcloud End-to-End Encryption before 1.5.3, 1.6.3 and 1.7.1 suffers from a denial of service vulnerability due to permitting any authenticated users to lock files of other users.

Language: PHP

Severity Score

Related Resources (4)

https://nvd.nist.gov/vuln/detail/CVE-2021-22906
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-3829-45wm-ww36
https://hackerone.com/reports/1189174
https://www.mend.io/vulnerability-database/CVE-2021-22906

Severity Score

Weakness Type (CWE)

Uncontrolled Resource Consumption ('Resource Exhaustion')

CWE-400

Authorization Bypass Through User-Controlled Key

CWE-639

Top Fix

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Upgrade to version V1.5.3, V1.6.3, V1.7.1

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CVSS v3.1

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

CVSS v2

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

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