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AUSCERT External Security Bulletin Redistribution
Screen Resolution Extra vulnerability
27 March 2018
AusCERT Security Bulletin Summary
Operating System: Ubuntu
Impact/Access: Unauthorised Access -- Existing Account
CVE Names: CVE-2018-8885
Comment: This advisory references vulnerabilities in products which run on
platforms other than Ubuntu. It is recommended that administrators
running screen-resolution-extra check for an updated version of the
software for their operating system.
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Ubuntu Security Notice USN-3607-1
March 26, 2018
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 17.10
- - Ubuntu 16.04 LTS
- - Ubuntu 14.04 LTS
Screen Resolution Extra could be tricked into bypassing PolicyKit
- - screen-resolution-extra: Extension for the GNOME screen resolution applet
It was discovered that Screen Resolution Extra was using PolicyKit in an
unsafe manner. A local attacker could potentially exploit this issue to
bypass intended PolicyKit authorizations.
The problem can be corrected by updating your system to the following
Ubuntu 16.04 LTS:
Ubuntu 14.04 LTS:
In general, a standard system update will make all the necessary changes.
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