CVE-2021-32728
Summary
| CVE | CVE-2021-32728 |
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| State | PUBLIC |
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| Assigner | [email protected] |
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| Source Priority | CVE Program / NVD first with legacy fallback |
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| Published | 2021-08-18 16:15:00 UTC |
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| Updated | 2022-10-04 14:14:00 UTC |
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| Description | 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. |
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NVD Known Affected Configurations (CPE 2.3)
References
| Reference | Source | Link | Tags |
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| Debian -- Security Information -- DSA-4974-1 nextcloud-desktop |
DEBIAN |
www.debian.org |
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| check e2ee public key against private one by mgallien · Pull Request #3338 · nextcloud/desktop · GitHub |
MISC |
github.com |
|
| End-to-end encryption device setup did not verify public key · Advisory · nextcloud/security-advisories · GitHub |
CONFIRM |
github.com |
|
| HackerOne |
MISC |
hackerone.com |
|
| CVE Program record |
CVE.ORG |
www.cve.org |
canonical |
| NVD vulnerability detail |
NVD |
nvd.nist.gov |
canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 178799 Debian Security Update for nextcloud-desktop (DSA 4974-1)
- 183383 Debian Security Update for nextcloud-desktop (CVE-2021-32728)
