Attackers exploited a flaw in an optional Nextcloud app, Collabora Online – Built-in CODE Server, to plant web shells on Nextcloud servers. Three administrators reported the issue on GitHub, with the first logged attack on September 10.
A web shell is a small file that executes any command an attacker sends via a web request, with the rights of the web server account. The flaw Attackers exploited a flaw in an optional Nextcloud app, Collabora Online – Built-in CODE Server, to plant web shells on Nextcloud servers. Three administrators reported the issue on GitHub, with the first logged attack on September 10.
A web shell is a small file that executes any command an attacker sends via a web request, with the rights of the web server account. The flaw The Hacker News