Ubuntu 5304-1: PolicyKit vulnerability | LinuxSecurity.com
==========================================================================
Ubuntu Security Notice USN-5304-1
February 28, 2022

policykit-1 vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 21.10
- Ubuntu 20.04 LTS

Summary:

policykit-1 could be made to crash if it received specially crafted data.

Software Description:
- policykit-1: framework for managing administrative policies and privileges

Details:

Kevin Backhouse discovered that PolicyKit incorrectly handled file
descriptors. A local attacker could possibly use this issue to cause
PolicyKit to crash, resulting in a denial of service.

Update instructions:

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

Ubuntu 21.10:
  policykit-1                     0.105-31ubuntu0.2

Ubuntu 20.04 LTS:
  policykit-1                     0.105-26ubuntu1.3

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-5304-1
  CVE-2021-4115

Package Information:
  https://launchpad.net/ubuntu/+source/policykit-1/0.105-31ubuntu0.2
  https://launchpad.net/ubuntu/+source/policykit-1/0.105-26ubuntu1.3

Ubuntu 5304-1: PolicyKit vulnerability

February 28, 2022

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 21.10 - Ubuntu 20.04 LTS Summary: policykit-1 could be made to crash if it received specially crafted data. Software Description: - policykit-1: framework for managing administrative policies and privileges Details: Kevin Backhouse discovered that PolicyKit incorrectly handled file descriptors. A local attacker could possibly use this issue to cause PolicyKit to crash, resulting in a denial of service.

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 21.10: policykit-1 0.105-31ubuntu0.2 Ubuntu 20.04 LTS: policykit-1 0.105-26ubuntu1.3 In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-5304-1

CVE-2021-4115

Severity
Ubuntu Security Notice USN-5304-1

Package Information

https://launchpad.net/ubuntu/+source/policykit-1/0.105-31ubuntu0.2 https://launchpad.net/ubuntu/+source/policykit-1/0.105-26ubuntu1.3

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