Nextcloud: Exception logging in Sharepoint app reveals clear-text connection details

Summary:

On Exceptions thrown in the context of the SharePoint app, connection credentials may be written to the Nextcloud log in clear text.

Steps To Reproduce:

Attempt to configure a sharepoint mount in an erroneous way.

Supporting Material/References:

• was files publically: https://github.com/nextcloud/sharepoint/issues/141

Impact

When an attacker gets hold of the nextcloud log, they may gain knowledge of credentials to connect to a SharePoint service.