Vulnerability in Nextcloud Desktop
CVE-2022-39334
Nextcloud also ships a CLI utility called nextcloudcmd which is sometimes used for automated scripting and headless servers. Versions of nextcloudcmd prior to 3.6.1 would incorrectly trust invalid TLS certificates, which may enable a Man-in-the-middle attack that exposes sensitive data or credentials to a network attacker. This affects the CLI only. It does not affect the standard GUI desktop Nextcloud clients, and it does not affect the Nextcloud server.
Vulnerability class: Improper Certificate Validation
EPSS: 0.002 (10.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.9 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N.
Affected products
- Nextcloud Desktop
- Nextcloud Security-advisories — versions < 3.6.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (Third Party Advisory)
- security-advisories@github.com (Exploit, Third Party Advisory, Issue Tracking)
- security-advisories@github.com (Patch, Third Party Advisory)
- security-advisories@github.com (Permissions Required, Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2022-39334?
- CVE-2022-39334 is a low-severity vulnerability in Nextcloud Desktop, classified under Improper Certificate Validation. CVSS score: 3.9/10. Published 2022-11-25.
- How severe is CVE-2022-39334?
- Low severity. CVSS v3 base score is 3.9 out of 10.
- Is CVE-2022-39334 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.