USN-3717-2: PolicyKit vulnerabilities

Releases

• Ubuntu 12.04

Packages

• policykit-1 - framework for managing administrative policies and privileges

Details

USN-3717-1 fixed a vulnerability in PolicyKit. This update provides
the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

It was discovered that PolicyKit incorrectly handled certain duplicate
action IDs. A local attacker could use this issue to cause PolicyKit to
crash, resulting in a denial of service, or possibly escalate privileges.
(CVE-2015-3255)

Matthias Gerstner discovered that PolicyKit incorrectly checked users. A
local attacker could possibly use this issue to cause authentication
dialogs to show up for other users, leading to a denial of service or an
information leak. (CVE-2018-1116)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 12.04

• libpolkit-backend-1-0 - 0.104-1ubuntu1.2

After a standard system update you need to reboot your computer to make
all the necessary changes.

References

• CVE-2015-3255
• CVE-2018-1116

Related notices

• USN-3717-1: gir1.2-polkit-1.0, libpolkit-backend-1-dev, libpolkit-gobject-1-0, libpolkit-backend-1-0, libpolkit-agent-1-dev, libpolkit-gobject-1-dev, libpolkit-agent-1-0, policykit-1, policykit-1-doc