Ubuntu Security Notice 3786-2 - USN-3786-1 fixed several vulnerabilities in libxkbcommon. This update provides the corresponding update for Ubuntu 18.04 LTS. It was discovered that libxkbcommon incorrectly handled certain files. An attacker could possibly use this issue to cause a denial of service. Various other issues were also addressed.
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Ubuntu Security Notice USN-3786-2
November 06, 2018
libxkbcommon vulnerabilities
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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