CVE-2023-28998

Published: 4 April 2023

The Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Server. Starting with version 3.0.0 and prior to version 3.6.5, a malicious server administrator can gain full access to an end-to-end encrypted folder. They can decrypt files, recover the folder structure, and add new files. Users should upgrade the Nextcloud Desktop client to 3.6.5 to receive a patch. No known workarounds are available.

Priority

Cvss 3 Severity Score

6.1

Score breakdown

Status

Package	Release	Status
nextcloud-desktop Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Needs triage
	jammy	Needs triage
	kinetic	Ignored (end of life, was needs-triage)
	lunar	Not vulnerable (3.7.3-1)
	mantic	Not vulnerable (3.7.3-1)
	noble	Not vulnerable (3.7.3-1)
	trusty	Ignored (end of standard support)
	upstream	Released (3.7.0-1)
	xenial	Ignored (end of standard support)

Severity score breakdown

Parameter	Value
Base score	6.1
Attack vector	Network
Attack complexity	Low
Privileges required	High
User interaction	Required
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N

References

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