Elevation of privilege vulnerabilities can be used to gain persistent root access.

Nimbuspwn, as Microsoft has named the EoP threat, is two vulnerabilities that reside in the networkd-dispatcher, a component in many Linux distributions that dispatch network status changes and can run various scripts to respond to a new status. When a machine boots, networkd-dispatcher runs as root.

The flaws, tracked as CVE-2022-29799 and CVE-2022-29800, combine threats including directory traversal, symlink race, and time-of-check time-of-use (TOCTOU) race condition.

  • @[email protected]
    3•2 years ago

    Actually a very interesting vulnerability. It involves swapping out scripts right before root runs them.

    Thanks for hardening the desktop, MS :)