CVE-2020-13777

GnuTLS 3.6.x before 3.6.14 uses incorrect cryptography for encrypting a
session ticket (a loss of confidentiality in TLS 1.2, and an authentication
bypass in TLS 1.3). The earliest affected version is 3.6.4 (2018-09-24)
because of an error in a 2018-09-18 commit. Until the first key rotation,
the TLS server always uses wrong data in place of an encryption key derived
from an application.

Bugs

• <https://gitlab.com/gnutls/gnutls/-/issues/1011&gt;
• <https://bugzilla.redhat.com/show_bug.cgi?id=1843723&gt;

Notes