Insufficient Verification of Data Authenticity Affecting gnutls package, versions <0:3.6.8-11.el8_2


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.32% (71st percentile)

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  • Snyk IDSNYK-RHEL8-GNUTLS-3758829
  • published26 Jul 2021
  • disclosed3 Jun 2020

Introduced: 3 Jun 2020

CVE-2020-13777  (opens in a new tab)
CWE-345  (opens in a new tab)

How to fix?

Upgrade RHEL:8 gnutls to version 0:3.6.8-11.el8_2 or higher.
This issue was patched in RHSA-2020:2637.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gnutls package and not the gnutls package as distributed by RHEL. See How to fix? for RHEL:8 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 Scores

version 3.1