CVE-2022-41970 Nextcloud Server's disabled download shares still allow download through preview images
Attackers can bypass download restrictions on shared files by accessing preview images, allowing unauthorized data retrieval.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2022-41970?
CVE-2022-41970 is a low-severity vulnerability in Nextcloud Nextcloud Server, published on 1 Dec 2022. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Nextcloud Server is an open source personal cloud server. Prior to versions 24.0.7 and 25.0.1, disabled download shares still allow download through preview images. Images could be downloaded and previews of documents (first page) can be downloaded without being watermarked. Versions 24.0.7 and 25.0.1 contain a fix for this issue. No known workarounds are available.
Which versions are affected by CVE-2022-41970?
It affects 1 product.
Products include Nextcloud Nextcloud Server.
How do I fix CVE-2022-41970?
No fix has been published for CVE-2022-41970 yet. Limit exposure of the affected software until one is available.
Is CVE-2022-41970 being exploited?
There is no known exploitation of CVE-2022-41970 in the wild and no public exploit code.
Other vulnerabilities in Nextcloud Nextcloud Server
- CVE-2021-32802 Preview generation used third-party library not suited for user-generated content in Nextcloud server
- CVE-2023-26482 Scope of workflow operations is not validated in nextcloud server
- CVE-2018-3775 Auth bypass in Nextcloud Server
- CVE-2023-35172 Nextcloud Server password reset endpoint is not brute force protected
- CVE-2023-32320 Nextcloud Server's brute force protection allows someone to send more requests than intended
Sources
Also known as GHSA-9mh6-cph8-772c.