CVE-2023-39957 Path traversal allows tricking the Talk Android app into writing files into it's root directory
Malicious apps can trick Nextcloud Talk Android into writing files outside its cache directory, potentially compromising the app's root directory.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2023-39957?
CVE-2023-39957 is a high-severity path traversal vulnerability in nextcloud security-advisories, published on 10 Aug 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Nextcloud Talk Android allows users to place video and audio calls through Nextcloud on Android. Prior to version 17.0.0, an unprotected intend allowed malicious third party apps to trick the Talk Android app into writing files outside of its intended cache directory. Nextcloud Talk Android version 17.0.0 has a patch for this issue. No known workarounds are available.
Weakness: CWE-22
Which versions are affected by CVE-2023-39957?
It affects 1 product.
Products include Nextcloud Talk.
How do I fix CVE-2023-39957?
No fix has been published for CVE-2023-39957 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2023-39957 being exploited?
There is no known exploitation of CVE-2023-39957 in the wild and no public exploit code.
Other vulnerabilities in nextcloud security-advisories
Sources
Also known as GHSA-36f7-93f3-mcfj.