Nextcloud Server vulnerabilities

CVE-2021-32703 [MEDIUM] CWE-799 CVE-2021-32703: Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20. Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.011, and 21.0.3, there was a lack of ratelimiting on the shareinfo endpoint. This may have allowed an attacker to enumerate potentially valid share tokens. The issue was fixed in versions 19.0.13, 20.0.11, and 21.0.3. There are no known workarounds.

CVE-2021-32734 [MEDIUM] CWE-209 CVE-2021-32734: Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20. Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.011, and 21.0.3, the Nextcloud Text application shipped with Nextcloud Server returned verbatim exception messages to the user. This could result in a full path disclosure on shared files. The issue was fixed in versions 19.0.13, 20.0.11, and 21.0.3.

CVE-2021-32733 [MEDIUM] CWE-79 CVE-2021-32733: Nextcloud Text is a collaborative document editing application that uses Markdown. A cross-site scri Nextcloud Text is a collaborative document editing application that uses Markdown. A cross-site scripting vulnerability is present in versions prior to 19.0.13, 20.0.11, and 21.0.3. The Nextcloud Text application shipped with Nextcloud server used a `text/html` Content-Type when serving files to users. Due the strict Content-Security-Policy shipped w

CVE-2021-32725 [MEDIUM] CWE-277 CVE-2021-32725: Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20. Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.011, and 21.0.3, default share permissions were not being respected for federated reshares of files and folders. The issue was fixed in versions 19.0.13, 20.0.11, and 21.0.3. There are no known workarounds.

CVE-2021-32678 [MEDIUM] CWE-799 CVE-2021-32678: Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20. Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.0.11, and 21.0.3, ratelimits are not applied to OCS API responses. This affects any OCS API controller (`OCSController`) using the `@BruteForceProtection` annotation. Risk depends on the installed applications on the Nextcloud Server, but could range

CVE-2021-32741 [MEDIUM] CWE-799 CVE-2021-32741: Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20. Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.011, and 21.0.3, there was a lack of ratelimiting on the public share link mount endpoint. This may have allowed an attacker to enumerate potentially valid share tokens. The issue was fixed in versions 19.0.13, 20.0.11, and 21.0.3. There are no known

CVE-2021-32680 [LOW] CWE-778 CVE-2021-32680: Nextcloud Server is a Nextcloud package that handles data storage. In versions priot to 19.0.13, 20. Nextcloud Server is a Nextcloud package that handles data storage. In versions priot to 19.0.13, 20.0.11, and 21.0.3, Nextcloud Server audit logging functionality wasn't properly logging events for the unsetting of a share expiration date. This event is supposed to be logged. This issue is patched in versions 19.0.13, 20.0.11, and 21.0.3.

CVE-2021-22915 [CRITICAL] CWE-307 CVE-2021-22915: Nextcloud server before 19.0.11, 20.0.10, 21.0.2 is vulnerable to brute force attacks due to lack of Nextcloud server before 19.0.11, 20.0.10, 21.0.2 is vulnerable to brute force attacks due to lack of inclusion of IPv6 subnets in rate-limiting considerations. This could potentially result in an attacker bypassing rate-limit controls such as the Nextcloud brute-force protection.

CVE-2021-32654 [CRITICAL] CWE-639 CVE-2021-32654: Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.11, 20. Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.11, 20.0.10, and 21.0.2, an attacker is able to receive write/read privileges on any Federated File Share. Since public links can be added as federated file share, this can also be exploited on any public link. Users can upgrade to patched versions (19.0.1

CVE-2021-32656 [HIGH] CWE-284 CVE-2021-32656: Nextcloud Server is a Nextcloud package that handles data storage. A vulnerability in federated shar Nextcloud Server is a Nextcloud package that handles data storage. A vulnerability in federated share exists in versions prior to 19.0.11, 20.0.10, and 21.0.2. An attacker can gain access to basic information about users of a server by accessing a public link that a legitimate server user added as a federated share. This happens because Nextcloud supp

CVE-2021-32657 [MEDIUM] CWE-400 CVE-2021-32657: Nextcloud Server is a Nextcloud package that handles data storage. In versions of Nextcloud Server p Nextcloud Server is a Nextcloud package that handles data storage. In versions of Nextcloud Server prior to 10.0.11, 20.0.10, and 21.0.2, a malicious user may be able to break the user administration page. This would disallow administrators to administrate users on the Nextcloud instance. The vulnerability is fixed in versions 19.0.11, 20.0.10, and

CVE-2021-32655 [LOW] CWE-241 CVE-2021-32655: Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.11, 20. Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.11, 20.0.10, and 21.0.2, an attacker is able to convert a Files Drop link to a federated share. This causes an issue on the UI side of the sharing user. When the sharing user opens the sharing panel and tries to remove the "Create" privileges of this unexpected

CVE-2021-32653 [LOW] CWE-201 CVE-2021-32653: Nextcloud Server is a Nextcloud package that handles data storage. Nextcloud Server versions prior t Nextcloud Server is a Nextcloud package that handles data storage. Nextcloud Server versions prior to 19.0.11, 20.0.10, or 21.0.2 send user IDs to the lookup server even if the user has no fields set to published. The vulnerability is patched in versions 19.0.11, 20.0.10, and 21.0.2; no workarounds outside the updates are known to exist.

CVE-2020-8296 [MEDIUM] CWE-257 CVE-2020-8296: Nextcloud Server prior to 20.0.0 stores passwords in a recoverable format even when external storage Nextcloud Server prior to 20.0.0 stores passwords in a recoverable format even when external storage is not configured.

CVE-2021-22877 [MEDIUM] CWE-284 CVE-2021-22877: A missing user check in Nextcloud prior to 20.0.6 inadvertently populates a user's own credentials f A missing user check in Nextcloud prior to 20.0.6 inadvertently populates a user's own credentials for other users external storage configuration when not already configured yet.

CVE-2021-22878 [MEDIUM] CWE-79 CVE-2021-22878: Nextcloud Server prior to 20.0.6 is vulnerable to reflected cross-site scripting (XSS) due to lack o Nextcloud Server prior to 20.0.6 is vulnerable to reflected cross-site scripting (XSS) due to lack of sanitization in `OC.Notification.show`.

CVE-2020-8294 [MEDIUM] CWE-79 CVE-2020-8294: A missing link validation in Nextcloud Server before 20.0.2, 19.0.5, 18.0.11 allows execution of a s A missing link validation in Nextcloud Server before 20.0.2, 19.0.5, 18.0.11 allows execution of a stored XSS attack using Internet Explorer when saving a 'javascript:' URL in markdown format.

CVE-2020-8295 [HIGH] CWE-400 CVE-2020-8295: A wrong check in Nextcloud Server 19 and prior allowed to perform a denial of service attack when re A wrong check in Nextcloud Server 19 and prior allowed to perform a denial of service attack when resetting the password for a user.

CVE-2020-8293 [MEDIUM] CWE-400 CVE-2020-8293: A missing input validation in Nextcloud Server before 20.0.2, 19.0.5, 18.0.11 allows users to store A missing input validation in Nextcloud Server before 20.0.2, 19.0.5, 18.0.11 allows users to store unlimited data in workflow rules causing load and potential DDoS on later interactions and usage with those rules.

CVE-2020-8259 [HIGH] CWE-522 CVE-2020-8259: Insufficient protection of the server-side encryption keys in Nextcloud Server 19.0.1 allowed an att Insufficient protection of the server-side encryption keys in Nextcloud Server 19.0.1 allowed an attacker to replace the encryption keys.