Executive Summary

Summary
Title PolicyKit vulnerability
Informations
NameUSN-3861-1First vendor Publication2019-01-16
VendorUbuntuLast vendor Modification2019-01-16
Severity (Vendor) N/ARevisionN/A

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:S/C:C/I:C/A:C)
Cvss Base Score9Attack RangeNetwork
Cvss Impact Score10Attack ComplexityLow
Cvss Expoit Score8AuthenticationRequires single instance
Calculate full CVSS 2.0 Vectors scores

Detail

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

- Ubuntu 18.10 - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS

Summary:

PolicyKit could allow unintended access.

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

Details:

It was discovered that PolicyKit incorrectly handled certain large user UIDs. A local attacker with a large UID could possibly use this issue to perform privileged actions.

Update instructions:

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

Ubuntu 18.10:
libpolkit-backend-1-0 0.105-21ubuntu0.3
policykit-1 0.105-21ubuntu0.3

Ubuntu 18.04 LTS:
libpolkit-backend-1-0 0.105-20ubuntu0.18.04.4
policykit-1 0.105-20ubuntu0.18.04.4

Ubuntu 16.04 LTS:
libpolkit-backend-1-0 0.105-14.1ubuntu0.4
policykit-1 0.105-14.1ubuntu0.4

Ubuntu 14.04 LTS:
libpolkit-backend-1-0 0.105-4ubuntu3.14.04.5
policykit-1 0.105-4ubuntu3.14.04.5

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

References:
https://usn.ubuntu.com/usn/usn-3861-1
CVE-2018-19788

Package Information:
https://launchpad.net/ubuntu/+source/policykit-1/0.105-21ubuntu0.3
https://launchpad.net/ubuntu/+source/policykit-1/0.105-20ubuntu0.18.04.4
https://launchpad.net/ubuntu/+source/policykit-1/0.105-14.1ubuntu0.4
https://launchpad.net/ubuntu/+source/policykit-1/0.105-4ubuntu3.14.04.5

Original Source

Url : http://www.ubuntu.com/usn/USN-3861-1

CWE : Common Weakness Enumeration

%idName
100 %CWE-20Improper Input Validation

CPE : Common Platform Enumeration

TypeDescriptionCount
Application1
Os5
Os2

Nessus® Vulnerability Scanner

DateDescription
2019-01-03Name : The remote Fedora host is missing a security update.
File : fedora_2018-4ac3c68ee4.nasl - Type : ACT_GATHER_INFO
2019-01-03Name : The remote Fedora host is missing a security update.
File : fedora_2018-2f8696869e.nasl - Type : ACT_GATHER_INFO
2018-12-07Name : The remote Debian host is missing a security-related update.
File : debian_DSA-4350.nasl - Type : ACT_GATHER_INFO

Alert History

If you want to see full details history, please login or register.
0
1
2
DateInformations
2019-02-05 21:21:51
  • Multiple Updates
2019-01-17 17:21:10
  • Multiple Updates
2019-01-16 17:18:33
  • First insertion