Shadow: security bypass

Background

Shadow is a set of tools to deal with user accounts.

Description

A local attacker could possibly bypass security restrictions if an administrator used “group blacklisting” to restrict access to file system paths.

Impact

A local attacker could possibly bypass security restrictions.

Workaround

There is no known workaround at this time.

Resolution

All shadow users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=sys-apps/shadow-4.6"