Use of a Risky Cryptographic Algorithm Affecting gnutls package, versions [3.6.0,3.6.14)


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.32% (71st percentile)

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  • Snyk IDSNYK-UNMANAGED-GNUTLS-2374621
  • published26 Jan 2022
  • disclosed4 Jun 2020
  • creditUnknown

Introduced: 4 Jun 2020

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

How to fix?

Upgrade gnutls to version 3.6.14 or higher.

Overview

Affected versions of this package are vulnerable to Use of a Risky Cryptographic Algorithm. 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.

References

CVSS Base Scores

version 3.1