USN-3877-1: LibVNCServer vulnerabilities
libvncserver vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
Summary
Several security issues were fixed in LibVNCServer.
Software Description
- libvncserver – vnc server library
Details
It was discovered that LibVNCServer incorrectly handled certain operations.
A remote attacker able to connect to applications using LibVNCServer could
possibly use this issue to obtain sensitive information, cause a denial of
service, or execute arbitrary code.
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 18.10
- libvncclient1 – 0.9.11+dfsg-1.1ubuntu0.1
- libvncserver1 – 0.9.11+dfsg-1.1ubuntu0.1
- Ubuntu 18.04 LTS
- libvncclient1 – 0.9.11+dfsg-1ubuntu1.1
- libvncserver1 – 0.9.11+dfsg-1ubuntu1.1
- Ubuntu 16.04 LTS
- libvncclient1 – 0.9.10+dfsg-3ubuntu0.16.04.3
- libvncserver1 – 0.9.10+dfsg-3ubuntu0.16.04.3
- Ubuntu 14.04 LTS
- libvncserver0 – 0.9.9+dfsg-1ubuntu1.4
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to restart LibVNCServer
applications to make all the necessary changes.
References
- CVE-2018-15126
- CVE-2018-15127
- CVE-2018-20019
- CVE-2018-20020
- CVE-2018-20021
- CVE-2018-20022
- CVE-2018-20023
- CVE-2018-20024
- CVE-2018-20748
- CVE-2018-20749
- CVE-2018-20750
- CVE-2018-6307
Source: USN-3877-1: LibVNCServer vulnerabilities
