==========================================================================
Ubuntu Security Notice USN-4547-2
September 28, 2020

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

In general, a standard system update will make all the necessary changes.

References:
  https://usn.ubuntu.com/4547-2
  https://usn.ubuntu.com/4547-1
  CVE-2018-20020, CVE-2018-20021, CVE-2018-20022, CVE-2018-20024

Package Information:
  https://launchpad.net/ubuntu/+source/ssvnc/1.0.29-2+deb8u1build0.16.04.1

-- 
ubuntu-security-announce mailing list
ubuntu-security-announce@lists.ubuntu.com
Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security-announce