Use of a Broken or Risky Cryptographic Algorithm Affecting gnutls package, versions <3.6.14-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
17.51% (97th percentile)

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  • Snyk IDSNYK-ALPINE316-GNUTLS-2842686
  • published21 Jul 2020
  • disclosed4 Jun 2020

Introduced: 4 Jun 2020

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

How to fix?

Upgrade Alpine:3.16 gnutls to version 3.6.14-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gnutls package and not the gnutls package as distributed by Alpine. See How to fix? for Alpine:3.16 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1