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Ubuntu 16.04 ESM USN-4966-2 Moderate: libx11 Access Threat

ubuntu
Calendar Grey May 25, 2021
Dist Ubuntu Esm H88
Fedora Security Advisory FSA-2023-1234 tackles a libgtk vulnerability that permits unauthorized data exposure. Ensure you upgrade immediately!
libx11 could allow unintended access to services.

Summary

libx11 could allow unintended access to services.

Software Description:

- libx11: X11 client-side library

Details:

USN-4966-1 fixed a vulnerability in libx11. This update provides

the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.

Original advisory details:

It was discovered that libx11 incorrectly validated certain parameter

lengths. A remote attacker could possibly use this issue to trick libx11

into emitting extra X protocol requests.

Topics%20covered

Topics Covered

security advisory moderate remote attack access issue update instructions ubuntu libx11

Update Instructions

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

Ubuntu 16.04 ESM:
  libx11-6                        2:1.6.3-1ubuntu2.2+esm1

Ubuntu 14.04 ESM:
  libx11-6                        2:1.6.2-1ubuntu2.1+esm2

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

References

https://ubuntu.com/security/notices/USN-4966-2

https://ubuntu.com/security/notices/USN-4966-1

CVE-2021-31535

Severity
important
Lowest
Low
Medium
High
Critical

May 25, 2021

Topics%20covered

Topics Covered

security advisory moderate remote attack access issue update instructions ubuntu libx11

Package Information

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