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USN-5965-1: TigerVNC vulnerability

21 March 2023

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

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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.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 20.04

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

References

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Further reading