[USN-4384-1] GnuTLS vulnerability

Marc Deslauriers marc.deslauriers at canonical.com
Fri Jun 5 18:43:02 UTC 2020

Ubuntu Security Notice USN-4384-1
June 05, 2020

gnutls28 vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.04 LTS
- Ubuntu 19.10


GnuTLS could be made to expose sensitive information.

Software Description:
- gnutls28: GNU TLS library


It was discovered that GnuTLS incorrectly handled session ticket encryption
keys. A remote attacker could possibly use this issue to bypass
authentication or recover sensitive information.

Update instructions:

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

Ubuntu 20.04 LTS:
  libgnutls30                     3.6.13-2ubuntu1.1

Ubuntu 19.10:
  libgnutls30                     3.6.9-5ubuntu1.2

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


Package Information:

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