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AUSCERT External Security Bulletin Redistribution
ESB-2018.3046.2
libxkbcommon vulnerabilities
7 November 2018
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AusCERT Security Bulletin Summary
---------------------------------
Product: libxkbcommon
Publisher: Ubuntu
Operating System: Ubuntu
Linux variants
Impact/Access: Denial of Service -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2018-15864 CVE-2018-15863 CVE-2018-15862
CVE-2018-15861 CVE-2018-15859 CVE-2018-15858
CVE-2018-15857 CVE-2018-15856 CVE-2018-15855
CVE-2018-15854 CVE-2018-15853
Original Bulletin:
http://www.ubuntu.com/usn/usn-3786-1
http://www.ubuntu.com/usn/usn-3786-2
Comment: This bulletin contains two (2) Ubuntu security advisories.
This advisory references vulnerabilities in products which run on
platforms other than Ubuntu. It is recommended that administrators
running libxkbcommon check for an updated version of the software
for their operating system.
Revision History: November 7 2018: USN-3786-2 adds the update for
Ubuntu 18.04 LTS.
October 9 2018: Initial Release
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==========================================================================
Ubuntu Security Notice USN-3786-1
October 08, 2018
libxkbcommon vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 16.04 LTS
- - Ubuntu 14.04 LTS
Summary:
Several security issues were fixed in libxkbcommon.
Software Description:
- - libxkbcommon: library interface to the XKB compiler - development
files
Details:
It was discovered that libxkbcommon incorrectly handled certain files.
An attacker could possibly use this issue to cause a denial of service.
(CVE-2018-15853, CVE-2018-15854, CVE-2018-15855, CVE-2018-15856,
CVE-2018-15857, CVE-2018-15858, CVE-2018-15859, CVE-2018-15861,
CVE-2018-15862, CVE-2018-15863, CVE-2018-15864)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 16.04 LTS:
 libxkbcommon-x11-0              0.5.0-1ubuntu2.1
 libxkbcommon0                   0.5.0-1ubuntu2.1
Ubuntu 14.04 LTS:
 libxkbcommon-x11-0              0.4.1-0ubuntu1.1
 libxkbcommon0                   0.4.1-0ubuntu1.1
In general, a standard system update will make all the necessary
changes.
References:
 https://usn.ubuntu.com/usn/usn-3786-1
 CVE-2018-15853, CVE-2018-15854, CVE-2018-15855, CVE-2018-15856,
 CVE-2018-15857, CVE-2018-15858, CVE-2018-15859, CVE-2018-15861,
 CVE-2018-15862, CVE-2018-15863, CVE-2018-15864
Package Information:
 https://launchpad.net/ubuntu/+source/libxkbcommon/0.5.0-1ubuntu2.1
 https://launchpad.net/ubuntu/+source/libxkbcommon/0.4.1-0ubuntu1.1
- --------------------------------------------------------------------------------
==========================================================================
Ubuntu Security Notice USN-3786-2
November 06, 2018
libxkbcommon vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 18.04 LTS
Summary:
Several security issues were fixed in libxkbcommon.
Software Description:
- - libxkbcommon: library interface to the XKB compiler - development
files
Details:
USN-3786-1 fixed several vulnerabilities in libxkbcommon. This
update provides the corresponding update for Ubuntu 18.04 LTS.
Original advisory details:
It was discovered that libxkbcommon incorrectly handled certain files.
An attacker could possibly use this issue to cause a denial of
service. (CVE-2018-15853, CVE-2018-15854, CVE-2018-15855, CVE-2018-
15856, CVE-2018-15857, CVE-2018-15858, CVE-2018-15859, CVE-2018-15861,
CVE-2018-15862, CVE-2018-15863, CVE-2018-15864)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 18.04 LTS:
libxkbcommon-x11-0 0.8.0-1ubuntu0.1
libxkbcommon0 0.8.0-1ubuntu0.1
In general, a standard system update will make all the necessary
changes.
References:
https://usn.ubuntu.com/usn/usn-3786-2
https://usn.ubuntu.com/usn/usn-3786-1
CVE-2018-15853, CVE-2018-15854, CVE-2018-15855, CVE-2018-15856,
CVE-2018-15857, CVE-2018-15858, CVE-2018-15859, CVE-2018-15861,
CVE-2018-15862, CVE-2018-15863, CVE-2018-15864
Package Information:
https://launchpad.net/ubuntu/+source/libxkbcommon/0.8.0-1ubuntu0.1
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