Vulnerability Details CVE-2023-28999
Nextcloud is an open-source productivity platform. In Nextcloud Desktop client 3.0.0 until 3.8.0, Nextcloud Android app 3.13.0 until 3.25.0, and Nextcloud iOS app 3.0.5 until 4.8.0, 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. This issue is fixed in Nextcloud Desktop 3.8.0, Nextcloud Android 3.25.0, and Nextcloud iOS 4.8.0. No known workarounds are available.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 54.4%
CVSS Severity
CVSS v3 Score 6.9
References
- https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdf
- https://github.com/nextcloud/desktop/pull/5560
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8875-wxww-3rr8
- https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdf
- https://github.com/nextcloud/desktop/pull/5560
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8875-wxww-3rr8
Products affected by CVE-2023-28999
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cpe:2.3:a:nextcloud:desktop:3.0.0
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cpe:2.3:a:nextcloud:desktop:3.0.1
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cpe:2.3:a:nextcloud:desktop:3.0.2
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cpe:2.3:a:nextcloud:desktop:3.0.3
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cpe:2.3:a:nextcloud:desktop:3.1.0
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cpe:2.3:a:nextcloud:desktop:3.1.1
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cpe:2.3:a:nextcloud:desktop:3.1.2
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cpe:2.3:a:nextcloud:desktop:3.1.3
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cpe:2.3:a:nextcloud:desktop:3.2.0
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cpe:2.3:a:nextcloud:desktop:3.2.1
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cpe:2.3:a:nextcloud:desktop:3.2.2
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cpe:2.3:a:nextcloud:desktop:3.3.1
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cpe:2.3:a:nextcloud:desktop:3.3.2
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cpe:2.3:a:nextcloud:desktop:3.3.3
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cpe:2.3:a:nextcloud:desktop:3.3.4
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cpe:2.3:a:nextcloud:desktop:3.3.5
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cpe:2.3:a:nextcloud:desktop:3.3.6
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cpe:2.3:a:nextcloud:desktop:3.4.0
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cpe:2.3:a:nextcloud:desktop:3.4.1
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cpe:2.3:a:nextcloud:desktop:3.4.2
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cpe:2.3:a:nextcloud:desktop:3.4.3
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cpe:2.3:a:nextcloud:desktop:3.4.4
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cpe:2.3:a:nextcloud:desktop:3.5.0
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cpe:2.3:a:nextcloud:desktop:3.5.1
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cpe:2.3:a:nextcloud:desktop:3.5.2
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cpe:2.3:a:nextcloud:desktop:3.5.3
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cpe:2.3:a:nextcloud:desktop:3.5.4
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cpe:2.3:a:nextcloud:desktop:3.6.0
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cpe:2.3:a:nextcloud:desktop:3.6.1
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cpe:2.3:a:nextcloud:desktop:3.6.2
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cpe:2.3:a:nextcloud:desktop:3.6.3
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cpe:2.3:a:nextcloud:desktop:3.6.4
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cpe:2.3:a:nextcloud:desktop:3.6.5
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cpe:2.3:a:nextcloud:desktop:3.6.6
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cpe:2.3:a:nextcloud:desktop:3.7.0
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cpe:2.3:a:nextcloud:desktop:3.7.1
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cpe:2.3:a:nextcloud:desktop:3.7.2
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cpe:2.3:a:nextcloud:desktop:3.7.3
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cpe:2.3:a:nextcloud:desktop:3.7.4
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cpe:2.3:a:nextcloud:nextcloud:*