FreeBSD VuXML: Documenting security issues in FreeBSD and the FreeBSD Ports Collection

GnuTLS -- flaw in TLS session ticket key construction

Affected packages
gnutls < 3.6.14


VuXML ID ef5b4f5f-a658-11ea-80d7-001cc0382b2f
Discovery 2020-06-03
Entry 2020-06-04

The GnuTLS project reports:

It was found that GnuTLS 3.6.4 introduced a regression in the TLS protocol implementation. This caused the TLS server to not securely construct a session ticket encryption key considering the application supplied secret, allowing a MitM attacker to bypass authentication in TLS 1.3 and recover previous conversations in TLS 1.2.


CVE Name CVE-2020-13777