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AUSCERT External Security Bulletin Redistribution
ESB-2018.2318
GDM vulnerability
14 August 2018
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AusCERT Security Bulletin Summary
---------------------------------
Product: gdm3
Publisher: Ubuntu
Operating System: Ubuntu
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2018-14424
Original Bulletin:
http://www.ubuntu.com/usn/usn-3737-1
Comment: This advisory references vulnerabilities in products which run on
platforms other than Ubuntu. It is recommended that administrators
running gdm3 check for an updated version of the software for their
operating system.
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Ubuntu Security Notice USN-3737-1
August 13, 2018
gdm3 vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 18.04 LTS
Summary:
GDM could be made to crash or run programs as the administrator.
Software Description:
- - gdm3: GNOME Display Manager
Details:
A use-after-free was discovered in GDM. A local user could exploit this to
cause a denial of service, or potentially execute arbitrary code as the
administrator.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 18.04 LTS:
gdm3 3.28.2-0ubuntu1.4
After a standard system update you need to reboot your computer to make
all the necessary changes.
References:
https://usn.ubuntu.com/usn/usn-3737-1
CVE-2018-14424
Package Information:
https://launchpad.net/ubuntu/+source/gdm3/3.28.2-0ubuntu1.4
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