cve-2021-32728
Vulnerability from cvelistv5
Published
2021-08-18 16:00
Modified
2024-08-03 23:33
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Summary
The Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Server with a computer. Clients using the Nextcloud end-to-end encryption feature download the public and private key via an API endpoint. In versions prior to 3.3.0, the Nextcloud Desktop client fails to check if a private key belongs to previously downloaded public certificate. If the Nextcloud instance serves a malicious public key, the data would be encrypted for this key and thus could be accessible to a malicious actor. This issue is fixed in Nextcloud Desktop Client version 3.3.0. There are no known workarounds aside from upgrading.
References
security-advisories@github.comhttps://github.com/nextcloud/desktop/pull/3338Patch, Third Party Advisory
security-advisories@github.comhttps://github.com/nextcloud/security-advisories/security/advisories/GHSA-f5fr-5gcv-6cc5Exploit, Third Party Advisory
security-advisories@github.comhttps://hackerone.com/reports/1189162Exploit, Third Party Advisory
security-advisories@github.comhttps://www.debian.org/security/2021/dsa-4974Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/nextcloud/desktop/pull/3338Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/nextcloud/security-advisories/security/advisories/GHSA-f5fr-5gcv-6cc5Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://hackerone.com/reports/1189162Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2021/dsa-4974Third Party Advisory
Impacted products
Vendor Product Version
nextcloud security-advisories Version: < 3.3.0
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}


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