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Vulnerability DatabaseCVE-2021-22912
CVE-2021-22912:
NixOS vulnerability analysis and mitigation
Overview
Nextcloud iOS before version 3.4.2 contains an information disclosure vulnerability (CVE-2021-22912) where searches for sharees utilize the lookup server by default instead of only searching on the local Nextcloud server, unless a global search has been explicitly chosen by the user. The vulnerability was disclosed on June 1, 2021 (Nextcloud Advisory).
Technical details
The vulnerability is classified as CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor). It has a CVSS v3.1 Base Score of 6.5 (MEDIUM) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N (NVD).
Impact
The vulnerability breaks the expectation of privacy by performing sharee searches on the lookup server by default, potentially exposing search queries and user information that were intended to remain local to the Nextcloud server (Nextcloud Advisory).
Mitigation and workarounds
The recommended mitigation is to upgrade the Nextcloud iOS App to version 3.4.2. No alternative workarounds are available (Nextcloud Advisory).
Additional resources
Source: This report was generated using AI
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