N/A - USN-3623-1

Executive Summary

Summary
Title	ubuntu-release-upgrader vulnerability

Informations
Name	USN-3623-1	First vendor Publication	2018-04-09
Vendor	Ubuntu	Last vendor Modification	2018-04-09
Severity (Vendor)	N/A	Revision	N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score	NA
Base Score	NA	Environmental Score	NA
impact SubScore	NA	Temporal Score	NA
Exploitabality Sub Score	NA

Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score	N/A	Attack Range	N/A
Cvss Impact Score	N/A	Attack Complexity	N/A
Cvss Expoit Score	N/A	Authentication	N/A
Calculate full CVSS 2.0 Vectors scores

Detail

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

- Ubuntu 17.10 - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS

Summary:

ubuntu-release-upgrader incorrectly opened as browser as an administrator.

Software Description: - ubuntu-release-upgrader: manage release upgrades

Details:

It was discovered that ubuntu-release-upgrader did not correctly drop permissions before opening a browser to view the release notes. This update fixes the issue.

Update instructions:

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

Ubuntu 17.10:
python3-distupgrade 1:17.10.11

Ubuntu 16.04 LTS:
python3-distupgrade 1:16.04.25

Ubuntu 14.04 LTS:
python3-distupgrade 1:0.220.10

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

References:
https://usn.ubuntu.com/usn/usn-3623-1
https://launchpad.net/bugs/1174007

Package Information:
https://launchpad.net/ubuntu/+source/ubuntu-release-upgrader/1:17.10.11
https://launchpad.net/ubuntu/+source/ubuntu-release-upgrader/1:16.04.25
https://launchpad.net/ubuntu/+source/ubuntu-release-upgrader/1:0.220.10