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Ubuntu 12.04 ESM USN-3717-2 Moderate: PolicyKit Denial of Service

ubuntu
Calendar Grey July 17, 2018
Dist Ubuntu Esm H88
Multiple vulnerabilities addressed in PolicyKit for Ubuntu 12.04 ESM. Please update promptly to mitigate denial of service and reduce potential exploitation.
Several security issues were fixed in PolicyKit.

Summary

Several security issues were fixed in PolicyKit.

Software Description:

- 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)

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu local attack security issues policykit administrative privilege

Update Instructions

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

Ubuntu 12.04 ESM:
  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

  https://ubuntu.com/security/notices/USN-3717-2

  https://ubuntu.com/security/notices/USN-3717-1

  CVE-2015-3255, CVE-2018-1116

July 17, 2018

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu local attack security issues policykit administrative privilege

Package Information

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