Use of a Broken or Risky Cryptographic Algorithm The advisory has been revoked - it doesn't affect any version of package gnutls28 (opens in a new tab)

Threat Intelligence

22.28% (98^th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk IDSNYK-UBUNTU1604-GNUTLS28-611168
published4 Jun 2020
disclosed4 Jun 2020

Report a new vulnerability Found a mistake?

Introduced: 4 Jun 2020

CVE-2020-13777 (opens in a new tab) CWE-327 (opens in a new tab)

Amendment

The Ubuntu security team deemed this advisory irrelevant for Ubuntu:16.04.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gnutls28 package and not the gnutls28 package as distributed by Ubuntu.

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.