CVE-2021-22895

Severity Score

5.9

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Nextcloud Desktop Client before 3.3.1 is vulnerable to improper certificate validation due to lack of SSL certificate verification when using the "Register with a Provider" flow.

Nextcloud Desktop Client versiones anteriores a 3.3.1, es vulnerable a una comprobación inapropiada de certificados debido a una falta de comprobación de certificados SSL cuando se usa el flujo "Register with a Provider"

*Credits: N/A

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-01-06 CVE Reserved
2021-06-11 CVE Published
2024-02-25 EPSS Updated
2024-08-03 CVE Updated
2024-08-03 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-295: Improper Certificate Validation

CAPEC

References (5)

URL	Tag	Source
https://github.com/nextcloud/desktop/releases/tag/v3.1.3	Release Notes
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-qpgp-vf4p-wcw5	Third Party Advisory

URL	Date	SRC
https://hackerone.com/reports/903424	2024-08-03

URL	Date	SRC
https://github.com/nextcloud/desktop/pull/2926	2021-12-02

URL	Date	SRC
https://www.debian.org/security/2021/dsa-4974	2021-12-02

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Nextcloud Search vendor "Nextcloud"		Desktop Search vendor "Nextcloud" for product "Desktop"				< 3.1.3 Search vendor "Nextcloud" for product "Desktop" and version " < 3.1.3"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				11.0 Search vendor "Debian" for product "Debian Linux" and version "11.0"		-		Affected