Portage: Man-in-the-middle attack

Background

Portage is the package management and distribution system for Gentoo.

Description

Portage does not verify X.509 SSL certificates properly if HTTPS is used.

Impact

A remote attacker can spoof servers and modify binary package lists via specially crafted certificates.

Workaround

There is no known workaround at this time.

Resolution

All Portage users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=sys-apps/portage-2.1.12.2"