Design/Logic Flaw

A missing file type check in Nextcloud Contacts 3.2.0 allowed a malicious user to upload any file as avatars...

CVE-2020-8181

A missing file type check in Nextcloud Contacts 3.2.0 allowed a malicious user to upload any file as avatars...

CVE-2020-8181

A missing file type check in Nextcloud Contacts 3.2.0 allowed a malicious user to upload any file as avatars...

CVE-2020-8181

CVE-2020-8181 affects Nextcloud Contacts 3.2.0. A missing file type check in the avatar upload feature allows uploading arbitrary files, as confirmed by multiple sources (Nextcloud advisory NC-SA-2020-024; Red Hat/CVE mapping; CNVD/NVD entries; HackerOne report). Consequences include potential up...

Arbitrary code execution in desktop client via OpenSSL config (NC-SA-2020-030)

A code injection in Nextcloud Desktop Client 2.6.4 allowed to load arbitrary code when placing a malicious OpenSSL config into a fixed directory...

Clear text storage of proxy parameters and passwords (NC-SA-2020-031)

A cleartext storage of sensitive information in Nextcloud Desktop Client 2.6.4 gave away information about used proxies and their authentication credentials...

XSS in desktop client via invalid server address on login form (NC-SA-2020-027)

A cross-site scripting error in Nextcloud Desktop client 2.6.4 allowed to present any html including local links when responding with invalid data on the login attempt...

Memory Leak in OCUtil.dll library in Desktop client can lead to DoS (NC-SA-2020-034)

A memory leak in the OCUtil.dll library used by Nextcloud Desktop Client 2.6.4 can lead to a DoS against the host system...

Linux client is vulnerable to directory traversal when downloading files (NC-SA-2020-032)

Missing sanitization of a server response in Nextcloud Desktop Client 2.6.4 for Linux allowed a malicious Nextcloud Server to store files outside of the dedicated sync directory...

Missing memory corruption protection on Windows release built (NC-SA-2020-035)

Missing ASLR and DEP protections in Nextcloud Desktop Client 2.6.4 for windows allowed to corrupt memory...

Nextcloud: Full path disclosure vulnerability via Upload .htaccess file

Hello Security team, i foud Full path disclosure vulnerability via Upload .htaccess file see POC video. Thankz Impact Sensitive File/Folder Information...

Nextcloud: Access control missing while viewing the attachments in the "All boards"

The vulnerability lies in the "view attachment" of the tasks . When a user uploads the file to the Task, the attachment is given a numeric number and is increased +1 on further uploads. It is easy for any user to view and download all the files uploaded to the tasks by any user. The access is not...

Nextcloud: Social App does not validate server certificates for outgoing connections

The Social App https://apps.nextcloud.com/apps/social does not validate the server TLS certificate for connections to other ActivityPub servers. These connections are used to retrieve the public key for a user or posting a message to another ActivityPub server. The public key for a user is used t...

Nextcloud Deck Access Control Error Vulnerability

Nextcloud Deck is a Kanban-style organization tool developed by Nextcloud, Inc. designed for individual planning and project organization for teams integrated with Nextcloud. An access control vulnerability exists in Nextcloud Deck version 1.0.0. An attacker can exploit the vulnerability to injec...

CVE-2020-8179

Improper access control in Nextcloud Deck 1.0.0 allowed an attacker to inject tasks into other users decks...

CVE-2020-8179

Improper access control in Nextcloud Deck 1.0.0 allowed an attacker to inject tasks into other users decks...

Improper access control

Improper access control in Nextcloud Deck 1.0.0 allowed an attacker to inject tasks into other users decks...

CVE-2020-8179

Improper access control in Nextcloud Deck 1.0.0 allowed an attacker to inject tasks into other users decks...

CVE-2020-8179

CVE-2020-8179 affects Nextcloud Deck 1.0.0. The root cause is an improper access control in the deck task/move flow: updating a card’s stackId via /apps/deck/cards/{id} does not enforce that the destination belongs to the requester, allowing an attacker to inject tasks into another user’s deck. T...

Nextcloud: Github wikis are editable by anyone https://github.com/nextcloud/bookmarks/wiki

Github wikis on the following projects https://github.com/nextcloud/bookmarks/wiki can be edited by any logged in user in the system. This poses security and reputation risk for the company. Impact As wikis listed above can be edited by any person on the internet, a malicious actor can accurately...