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Ubuntu 18.04 LTS USN-3786-2 Critical: libxkbcommon Denial Of Service

ubuntu
Calendar Grey November 6, 2018
Dist Ubuntu Esm H88
Announcement regarding urgent patches for libxkbcommon on Ubuntu 18.04 LTS, rectifying multiple vulnerabilities.
Several security issues were fixed in libxkbcommon.

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)

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu libxkbcommon

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://ubuntu.com/security/notices/USN-3786-2

  https://ubuntu.com/security/notices/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

Severity
critical
Lowest
Low
Medium
High
Critical

November 06, 2018

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu libxkbcommon

Package Information

  https://launchpad.net/ubuntu/+source/libxkbcommon/0.8.0-1ubuntu0.1

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