ssvnc vulnerabilities
A security issue affects these releases of Ubuntu and its
derivatives:
* Ubuntu 16.04 LTS
Summary
Several security issues were fixed in SSVNC.
Software Description
* ssvnc - Enhanced TightVNC viewer with SSL/SSH tunnel helper
Details
It was discovered that the LibVNCClient vendored in SSVNC
incorrectly handled certain packet lengths. A remote attacker
could possibly use this issue to obtain sensitive information,
cause a denial of service, or execute arbitrary code.
(CVE-2018-20020, CVE-2018-20021, CVE-2018-20022, CVE-2018-2024)
Update instructions
The problem can be corrected by updating your system to the
following package versions:
Ubuntu 16.04 LTS
ssvnc - 1.0.29-2+deb8u1build0.16.04.1
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary
changes.
References
* USN-4547-1
* CVE-2018-20020
* CVE-2018-20021
* CVE-2018-20022
* CVE-2018-20024
--- Mystic BBS v1.12 A46 (Linux/64)
* Origin: BZ&BZ BBS (21:4/110)