Vulnerability in Nextcloud End-To-End Encryption
CVE-2023-35173
Nextcloud End-to-end encryption app provides all the necessary APIs to implement End-to-End encryption on the client side. By providing an invalid meta data file, an attacker can make previously dropped files inaccessible. It is recommended that the Nextcloud End-to-end encryption app is upgraded to version 1.12.4 that contains the fix.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (39.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 39.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Nextcloud End-To-End Encryption
- Nextcloud Security-Advisories — versions >= 1.12.0, < 1.12.4
Weakness classification (CWE)
References
- github.com/nextcloud/security-advisories/security/advisories/GHSA-x7c7-v5r3-mg37 (Vendor Advisory)
- github.com/nextcloud/end_to_end_encryption/pull/435 (Patch)
- hackerone.com/reports/1914115 (Third Party Advisory)
Frequently asked questions
- What is CVE-2023-35173?
- CVE-2023-35173 is a medium-severity vulnerability in Nextcloud End-To-End Encryption, classified under Improper Access Control. CVSS score: 5.7/10. Published 2023-06-23.
- How severe is CVE-2023-35173?
- Medium severity. CVSS v3 base score is 5.7 out of 10.