multipath-tools: World-writeable socket

Background

multipath-tools are used to drive the Device Mapper multipathing driver.

Description

multipath-tools uses world-writable permissions for the socket file (/var/run/multipathd.sock).

Impact

Local users could send arbitrary commands to the multipath daemon, causing cluster failures and data loss.

Workaround

chmod o-rwx /var/run/multipath.sock

Resolution

All multipath-tools users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=sys-fs/multipath-tools-0.4.8-r1"

NOTE: This is a legacy GLSA. Updates for all affected architectures are available since November 13, 2009. It is likely that your system is already no longer affected by this issue.