CVE-2017-0885 Information disclosure in Nextcloud Server

Medium 4.3 Published Updated

Attackers with write-only share access can enumerate existing file and folder names by analyzing error messages, exposing sensitive directory structure information.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2017-0885?

CVE-2017-0885 is a medium-severity vulnerability in Nextcloud Nextcloud Server, published on 5 Apr 2017. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Nextcloud Server before 9.0.55 and 10.0.2 suffers from a error message disclosing existence of file in write-only share. Due to an error in the application logic an adversary with access to a write-only share may enumerate the names of existing files and subfolders by comparing the exception messages.

Weakness: CWE-200, CWE-209

Which versions are affected by CVE-2017-0885?

It affects 1 product.

Products include Nextcloud Nextcloud Server.

How do I fix CVE-2017-0885?

No fix has been published for CVE-2017-0885 yet. Limit exposure of the affected software until one is available.

Is CVE-2017-0885 being exploited?

There is no known exploitation of CVE-2017-0885 in the wild and no public exploit code.

All Nextcloud Nextcloud Server vulnerabilities

Sources

Also known as GHSA-7xfm-46r7-g8cx.

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