What is CVE-2023-28998?

CVE-2023-28998 is a medium-severity vulnerability in Nextcloud Security-advisories, classified under Missing Cryptographic Step. CVSS score: 6.7/10. Published 2023-04-04.

How severe is CVE-2023-28998?

Medium severity. CVSS v3 base score is 6.7 out of 10.

Vulnerability in Nextcloud Security-advisories

CVE-2023-28998

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 de…

EPSS: 0.005 (65.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N.

Affected products

Nextcloud Security-advisories — versions >= 3.0.0, < 3.6.5

Weakness classification (CWE)

CWE-325 — Missing Cryptographic Step

References

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jh3g-wpwv-cqgr (x_refsource_CONFIRM)
https://github.com/nextcloud/desktop/pull/5323 (x_refsource_MISC)
https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdf (x_refsource_MISC)

Frequently asked questions

What is CVE-2023-28998?: CVE-2023-28998 is a medium-severity vulnerability in Nextcloud Security-advisories, classified under Missing Cryptographic Step. CVSS score: 6.7/10. Published 2023-04-04.
How severe is CVE-2023-28998?: Medium severity. CVSS v3 base score is 6.7 out of 10.