USN-4233-1: GnuTLS update

09 January 2020

SHA1 has been marked as untrusted in GnuTLS.



  • gnutls28 - GNU TLS library


As a security improvement, this update marks SHA1 as being untrusted for
digital signature operations.

Update instructions

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

Ubuntu 18.04
Ubuntu 16.04

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