libx11 vulnerabilities
A security issue affects these releases of Ubuntu and its
derivatives:
* Ubuntu 14.04 ESM
* Ubuntu 12.04 ESM
Summary
Several security issues were fixed in libx11.
Software Description
* libx11 - None
Details
USN-4487-1 fixed several vulnerabilities in libx11. This update
provides the corresponding update for Ubuntu 12.04 ESM and 14.04
ESM.
Original advisory details:
Todd Carson discovered that libx11 incorrectly handled certain
memory operations. A local attacker could possibly use this issue
to escalate privileges. (CVE-2020-14344)
Jayden Rivers discovered that libx11 incorrectly handled locales.
A local attacker could possibly use this issue to escalate
privileges. (CVE-2020-14363)
Update instructions
The problem can be corrected by updating your system to the
following package versions:
Ubuntu 14.04 ESM
libx11-6 - 2:1.6.2-1ubuntu2.1+esm1
Ubuntu 12.04 ESM
libx11-6 - 2:1.4.99.1-0ubuntu2.5
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to reboot your computer to
make all the necessary changes.
References
* USN-4487-1
* CVE-2020-14344
* CVE-2020-14363
--- Mystic BBS v1.12 A45 (Linux/64)
* Origin: BZ&BZ BBS (21:4/110)