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USN-3717-2: PolicyKit vulnerabilities

17 July 2018

Several security issues were fixed in PolicyKit.

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Releases

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)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 12.04

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

Related notices

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