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Ubuntu 18.04 LTS: 3758-1 Critical LibX11 Information Disclosure

ubuntu
Calendar Grey August 30, 2018
Dist Ubuntu Esm H88
Numerous vulnerabilities identified in libx11 affecting Ubuntu installations. Immediate updates necessary to protect systems from potential threats.
Several security issues were fixed in libx11.

Summary

Several security issues were fixed in libx11.

Software Description:

- libx11: X11 client-side library

Details:

Tobias Stoeckmann discovered that libx11 incorrectly handled certain

images. An attacker could possibly use this issue to access sensitive

information (CVE-2016-7942)

Tobias Stoeckmann discovered that libx11 incorrectly handled certain

inputs. An attacker could possibly use this issue to access sensitive

information. (CVE-2016-7943)

It was discovered that libx11 incorrectly handled certain inputs.

An attacker could possibly use this issue to cause a denial of service.

(CVE-2018-14598, CVE-2018-14599, CVE-2018-14600)

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu information disclosure libx11

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 18.04 LTS:
  libx11-6                        2:1.6.4-3ubuntu0.1
  libx11-dev                      2:1.6.4-3ubuntu0.1

Ubuntu 16.04 LTS:
  libx11-6                        2:1.6.3-1ubuntu2.1
  libx11-dev                      2:1.6.3-1ubuntu2.1

Ubuntu 14.04 LTS:
  libx11-6                        2:1.6.2-1ubuntu2.1
  libx11-dev                      2:1.6.2-1ubuntu2.1

After a standard system update you need to reboot your computer to make
all the necessary changes.

References

  https://ubuntu.com/security/notices/USN-3758-1

  CVE-2016-7942, CVE-2016-7943, CVE-2018-14598, CVE-2018-14599,

  CVE-2018-14600

Severity
critical
Lowest
Low
Medium
High
Critical

August 30, 2018

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu information disclosure libx11

Package Information

  https://launchpad.net/ubuntu/+source/libx11/2:1.6.4-3ubuntu0.1
  https://launchpad.net/ubuntu/+source/libx11/2:1.6.3-1ubuntu2.1
  https://launchpad.net/ubuntu/+source/libx11/2:1.6.2-1ubuntu2.1

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