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CVE-2022-31118

Missing brute force protection on cloud federation sharing in Nextcloud Server

Nextcloud server is an open source personal cloud solution. In affected versions an attacker could brute force to find if federated sharing is being used and potentially try to brute force access tokens for federated shares (`a-zA-Z0-9` ^ 15). It is recommended that the Nextcloud Server is upgraded to 22.2.9, 23.0.6 or 24.0.2. Users unable to upgrade may disable federated sharing via the Admin Sharing settings in `index.php/settings/admin/sharing`.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Nextcloud
Products
Nextcloud Server
CVE-2022-31120

Federated share accepting/declining is not logged in audit log in Nextcloud Server

Nextcloud server is an open source personal cloud solution. The audit log is used to get a full trail of the actions which has been incompletely populated. In affected versions federated share events were not properly logged which would allow brute force attacks to go unnoticed. This behavior exacerbates the impact of CVE-2022-31118. It is recommended that the Nextcloud Server is upgraded to 22.2.7, 23.0.4 or 24.0.0. There are no workarounds available.

CVSS 3.1 · 2.1 Low EPSS < 1% KEV · Not listed
Vendors
Nextcloud
Products
Nextcloud Server
CVE-2022-31132

Unauthenticated SSRF in 3rd party module "cerdic/csstidy"

Nextcloud Mail is an email application for the nextcloud personal cloud product. Affected versions shipped with a CSS minifier on the path `./vendor/cerdic/css-tidy/css_optimiser.php`. Access to the minifier is unrestricted and access may lead to Server-Side Request Forgery (SSRF). It is recommendet to upgrade to Mail 1.12.7 or Mail 1.13.6. Users unable to upgrade may manually delete the file located at `./vendor/cerdic/css-tidy/css_optimiser.php`

CVSS 3.1 · 8.3 High EPSS < 1% KEV · Not listed
Vendors
Nextcloud
Products
Mail
CVE-2022-31119

Password disclosure in log file in Nextcloud Mail App

Nextcloud Mail is an email application for the nextcloud personal cloud product. Affected versions of Nextcloud mail would log user passwords to disk in the event of a misconfiguration. Should an attacker gain access to the logs complete access to affected accounts would be obtainable. It is recommended that the Nextcloud Mail is upgraded to 1.12.1. Operators should inspect their logs and remove passwords which have been logged. There are no workarounds to prevent logging in the event of a misconfiguration.

CVSS 3.1 · 3.1 Low EPSS < 1% KEV · Not listed
Vendors
Nextcloud
Products
Mail
CVE-2022-35932

Missing rate limit when trying to join a password protected Nextcloud Talk conversation

Nextcloud Talk is a video and audio conferencing app for Nextcloud. Prior to versions 12.2.7, 13.0.7, and 14.0.3, password protected conversations are susceptible to brute force attacks if the attacker has the link/conversation token. It is recommended that the Nextcloud Talk application is upgraded to 12.2.7, 13.0.7 or 14.0.3. There are currently no known workarounds available apart from not having password protected conversations.

CVSS 3.1 · 3.5 Low EPSS 1.4% KEV · Not listed
Vendors
Nextcloud
Products
Talk
CVE-2022-35931

Nextcloud Password Policy's generated passwords are not fully validated by HIBPValidator

Nextcloud Password Policy is an app that enables a Nextcloud server admin to define certain rules for passwords. Prior to versions 22.2.10, 23.0.7, and 24.0.3 the random password generator may, in very rare cases, generate common passwords that the validator itself would block. Upgrade Nextcloud Server to 22.2.10, 23.0.7 or 24.0.3 to receive a patch for the issue in Password Policy. There are no known workarounds available.

CVSS 3.1 · 2.7 Low EPSS < 1% KEV · Not listed
Vendors
Nextcloud
Products
Password Policy
CVE-2022-36075

File list exposure in Nextcloud Files Access Control

Nextcloud files access control is a nextcloud app to manage access control for files. Users with limited access can see file names in certain cases where they do not have privilege to do so. This issue has been addressed and it is recommended that the Nextcloud Files Access Control app is upgraded to 1.12.2, 1.13.1 or 1.14.1. There are no known workarounds for this issue

CVSS 3.1 · 2.6 Low EPSS < 1% KEV · Not listed
Vendors
Nextcloud
Products
Files Access Control
CVE-2022-36074

Authentication headers exposed on by Nextcloud Server

Nextcloud server is an open source personal cloud product. Affected versions of this package are vulnerable to Information Exposure which fails to strip the Authorization header on HTTP downgrade. This can lead to account access exposure and compromise. It is recommended that the Nextcloud Server is upgraded to 23.0.7 or 24.0.3. It is recommended that the Nextcloud Enterprise Server is upgraded to 22.2.11, 23.0.7 or 24.0.3. There are no known workarounds for this issue.

CVSS 3.1 · 6.4 Medium EPSS < 1% KEV · Not listed
Vendors
Nextcloud
Products
Nextcloud Enterprise Server Nextcloud Server
CVE-2022-39211

Server-Side Request Forgery (SSRF) via potential filter bypass in Nextcloud Server

Nextcloud server is an open source personal cloud platform. In affected versions it was found that locally running webservices can be found and requested erroneously. It is recommended that the Nextcloud Server is upgraded to 23.0.8 or 24.0.4. It is recommended that the Nextcloud Enterprise Server is upgraded to 22.2.10.4, 23.0.8 or 24.0.4. There are no known workarounds for this issue.

CVSS 3.1 · 3 Low EPSS < 1% KEV · Not listed
Vendors
Nextcloud
Products
Nextcloud Enterprise Server Nextcloud Server
CVE-2022-39210

Access to internal files of the Nextcloud Android app

Nextcloud android is the official Android client for the Nextcloud home server platform. Internal paths to the Nextcloud Android app files are not properly protected. As a result access to internal files of the from within the Nextcloud Android app is possible. This may lead to a leak of sensitive information in some cases. It is recommended that the Nextcloud Android app is upgraded to 3.21.0. There are no known workarounds for this issue.

CVSS 3.1 · 3.2 Low EPSS < 1% KEV · Not listed
Vendors
Nextcloud
Products
Nextcloud
CVE-2022-39212

Last video frame is still sent after video is disabled in a call in Nextcloud Talk

Nextcloud Talk is an open source chat, video & audio calls client for the Nextcloud platform. In affected versions an attacker could see the last video frame of any participant who has video disabled but a camera selected. It is recommended that the Nextcloud Talk app is upgraded to 13.0.8 or 14.0.4. Users unable to upgrade should select "None" as camera before joining the call.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Vendors
Nextcloud
Products
Talk
CVE-2022-41882

Nextcloud Desktop vulnerable to code injection via malicious link

The Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Server with your computer. In version 3.6.0, if a user received a malicious file share and has it synced locally or the virtual filesystem enabled and clicked a nc://open/ link it will open the default editor for the file type of the shared file, which on Windows can also sometimes mean that a file depending on the type, e.g. "vbs", is being executed. It is recommended that the Nextcloud Desktop client is upgraded to version 3.6.1. As a workaround, users can block the Nextcloud Desktop client 3.6.0 by setting the `minimum.supported.desktop.version` system config to `3.6.1` on the server, so new files designed to use this attack vector are not downloaded anymore. Already existing files can still be used. Another workaround would be to enforce shares to be accepted by setting the `sharing.force_share_accept` system config to `true` on the server, so new files designed to use this attack vector are not downloaded anymore. Already existing shares can still be abused.

CVSS 3.1 · 6.6 Medium EPSS < 1% KEV · Not listed
Vendors
Nextcloud
Products
Desktop
CVE-2022-39338

Stored cross site scripting (XSS) vulnerability via Authorization Endpoint in user_oidc

user_oidc is an OpenID Connect user backend for Nextcloud. Versions prior to 1.2.1 did not properly validate discovery urls which may lead to a stored cross site scripting attack vector. The impact is limited due to the restrictive CSP that is applied on this endpoint. Additionally this vulnerability has only been shown to be exploitable in the Safari web browser. This issue has been addressed in version 1.2.1. Users are advised to upgrade. Users unable to upgrade should urge their users to avoid using the Safari web browser.

CVSS 3.1 · 3.5 Low EPSS < 1% KEV · Not listed
Vendors
Nextcloud
Products
Openid Connect User Backend
CVE-2022-39339

Cleartext Transmission of Sensitive Information in user_oidc

user_oidc is an OpenID Connect user backend for Nextcloud. In versions prior to 1.2.1 sensitive information such as the OIDC client credentials and tokens are sent in plain text of HTTP without TLS. Any malicious actor with access to monitor user traffic may have been able to compromise account security. This issue has been addressed in in user_oidc v1.2.1. Users are advised to upgrade. Users unable to upgrade may use https to access Nextcloud. Set an HTTPS discovery URL in the provider settings (in Nextcloud OIDC admin settings).

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Vendors
Nextcloud
Products
Openid Connect User Backend
CVE-2022-39346

Missing length validation of user displayname in nextcloud server

Nextcloud server is an open source personal cloud server. Affected versions of nextcloud server did not properly limit user display names which could allow a malicious users to overload the backing database and cause a denial of service. It is recommended that the Nextcloud Server is upgraded to 22.2.10, 23.0.7 or 24.0.3. There are no known workarounds for this issue.

CVSS 3.1 · 3.5 Low EPSS 1.1% KEV · Not listed
Vendors
Fedoraproject Nextcloud
Products
Fedora Nextcloud Enterprise Server Nextcloud Server
CVE-2022-41926

Nextcloud Talk Android broadcast incorrect permission handling

Nextcould talk android is the android OS implementation of the nextcloud talk chat system. In affected versions the receiver is not protected by broadcastPermission allowing malicious apps to monitor communication. It is recommended that the Nextcloud Talk Android is upgraded to 14.1.0. There are no known workarounds for this issue.

CVSS 3.1 · 3.3 Low EPSS < 1% KEV · Not listed
Vendors
Nextcloud
Products
Talk
CVE-2022-41971

Nextcloud Talk guests can continue to receive video streams from call after being removed from a conversation

Nextcould Talk android is a video and audio conferencing app for Nextcloud. Prior to versions 12.2.8, 13.0.10, 14.0.6, and 15.0.0, guests can continue to receive video streams from a call after being removed from a conversation. An attacker would be able to see videos on a call in a public conversation after being removed from that conversation, provided that they were removed while being in the call. Versions 12.2.8, 13.0.10, 14.0.6, and 15.0.0 contain patches for the issue. No known workarounds are available.

CVSS 3.1 · 4.8 Medium EPSS < 1% KEV · Not listed
Vendors
Nextcloud
Products
Nextcloud Talk
CVE-2021-41180

Geolocation preview links can be set to arbitrary links in nextcloud talk

Nextcloud talk is a self hosting messaging service. In versions prior 12.1.2 an attacker is able to control the link of a geolocation preview in the Nextcloud Talk application due to a lack of validation on the link. This could result in an open-redirect, but required user interaction. This only affected users of the Android Talk client. It is recommended that the Nextcloud Talk App is upgraded to 12.1.2. There are no known workarounds.

CVSS 3.1 · 4.7 Medium EPSS 1.0% KEV · Not listed
Vendors
Nextcloud
Products
Talk
CVE-2022-24741

High memory usage in Nextcloud server

Nextcloud server is an open source, self hosted cloud style services platform. In affected versions an attacker can cause a denial of service by uploading specially crafted files which will cause the server to allocate too much memory / CPU. It is recommended that the Nextcloud Server is upgraded to 21.0.8 , 22.2.4 or 23.0.1. Users unable to upgrade should disable preview generation with the `'enable_previews'` config flag.

CVSS 3.1 · 3.5 Low EPSS 1.6% KEV · Not listed
Vendors
Nextcloud
Products
Nextcloud Server
CVE-2022-24885

Improper Authentication in Nextcloud Android Files

Nextcloud Android app is the Android client for Nextcloud, a self-hosted productivity platform. Prior to version 3.19.1, users can bypass a lock on the Nextcloud app on an Android device by repeatedly reopening the app. Version 3.19.1 contains a fix for the problem. There are currently no known workarounds.

CVSS 3.1 · 2 Low EPSS < 1% KEV · Not listed
Vendors
Nextcloud
Products
Nextcloud