CVE-2021-22895

2021-06-1116:15:10

Debian Security Bug Tracker

security-tracker.debian.org

nextcloud

ssl certificate

validation

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:N/I:P/A:N

CVSS3

5.9

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS

0.002

Percentile

56.7%

JSON

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.

OSVersionArchitecturePackageVersionFilename
Debian12allnextcloud-desktop< 3.3.1-1nextcloud-desktop_3.3.1-1_all.deb
Debian11allnextcloud-desktop< 3.1.1-2+deb11u1nextcloud-desktop_3.1.1-2+deb11u1_all.deb
Debian999allnextcloud-desktop< 3.3.1-1nextcloud-desktop_3.3.1-1_all.deb
Debian13allnextcloud-desktop< 3.3.1-1nextcloud-desktop_3.3.1-1_all.deb

OS	Version	Architecture	Package	Version	Filename
Debian	12	all	nextcloud-desktop	< 3.3.1-1	nextcloud-desktop_3.3.1-1_all.deb
Debian	11	all	nextcloud-desktop	< 3.1.1-2+deb11u1	nextcloud-desktop_3.1.1-2+deb11u1_all.deb
Debian	999	all	nextcloud-desktop	< 3.3.1-1	nextcloud-desktop_3.3.1-1_all.deb
Debian	13	all	nextcloud-desktop	< 3.3.1-1	nextcloud-desktop_3.3.1-1_all.deb