CVE-2023-28998 — Missing Cryptographic Step in Desktop

CWE-325 — Missing Cryptographic Step4 documents4 sources
Severity
6.1MEDIUMNVD
CNA6.7
EPSS
1.1%
top 21.97%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Nextcloud DesktopNextcloud Security-advisories
Timeline
PublishedApr 4

Description

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:NExploitability: 0.9 | Impact: 5.2

Affected Packages2 packages

▶NVDnextcloud/desktop3.0.0 — 3.6.5
▶CVEListV5nextcloud/security-advisories>= 3.0.0, < 3.6.5

Patches

Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

2
CVEList
Nextcloud Desktop client misbehaves with E2EE when the server returns empty list of metadata keys↗2023-04-04
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OSV
CVE-2023-28998: The Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Server↗2023-04-04
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📋Vendor Advisories

1
Debian
CVE-2023-28998: nextcloud-desktop - The Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Serve...↗2023
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CVE-2023-28998 — Missing Cryptographic Step in Desktop | cvebase