CESG discovered a root escalation flaw in the acpi-support package. An unprivileged user can inject the DBUS_SESSION_BUS_ADDRESS environment variable to run arbitrary commands as root user via the policy-funcs script.

For the stable distribution (wheezy), this problem has been fixed in version 0.140-5+deb7u1. For the testing distribution (jessie), this problem has been fixed in version 0.142-2. For the unstable distribution (sid), this problem has been fixed in version 0.142-2. We recommend that you upgrade your acpi-support packages.

This package contains scripts to react to various ACPI events. It only includes scripts for events that can be supported with some level of safety cross platform.

acpi-support on Debian Linux

This check tests the installed software version using the apt package manager.

• http://www.debian.org/security/2014/dsa-2984.html

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Updated on 2015-03-25