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AUSCERT External Security Bulletin Redistribution
ESB-2018.1075
ubuntu-release-upgrader vulnerability
10 April 2018
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AusCERT Security Bulletin Summary
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Product: ubuntu-release-upgrader
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Increased Privileges -- Remote/Unauthenticated
Resolution: Patch/Upgrade
Original Bulletin:
http://www.ubuntu.com/usn/usn-3623-1
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USN-3623-1: ubuntu-release-upgrader vulnerability
9 April 2018
ubuntu-release-upgrader vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 17.10
o Ubuntu 16.04 LTS
o Ubuntu 14.04 LTS
Summary
ubuntu-release-upgrader incorrectly opened as browser as an administrator.
Software Description
o 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
To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.
References
o https://usn.ubuntu.com/usn/usn-3623-1
o https://launchpad.net/bugs/1174007
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