1. Ubuntu Security Notices
  2. USN-5965-1

USN-5965-1: TigerVNC vulnerability

Publication date

21 March 2023

Overview

TigerVNC could be made to expose sensitive information over the network.

Releases

Packages

  • tigervnc - High-performance, platform-neutral implementation of VNC

Details

It was discovered that TigerVNC mishandled TLS certificate exceptions. An
attacker could use this vulnerability to impersonate any server after a client
had added an exception and obtain sensitive information.

It was discovered that TigerVNC mishandled TLS certificate exceptions. An
attacker could use this vulnerability to impersonate any server after a client
had added an exception and obtain sensitive information.

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
20.04 focal tigervnc-common –  1.10.1+dfsg-3ubuntu0.1+esm2  
tigervnc-standalone-server –  1.10.1+dfsg-3ubuntu0.1+esm2  
tigervnc-scraping-server –  1.10.1+dfsg-3ubuntu0.1+esm2  

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References

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