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Use of a Broken or Risky Cryptographic Algorithm Affecting gnutls28 package, versions <3.6.7-4+deb10u4

0.0
high

Snyk CVSS

    Attack Complexity High
    Confidentiality High
    Integrity High

    Threat Intelligence

    EPSS 0.32% (71st percentile)
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NVD
7.4 high
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SUSE
7.4 high
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Red Hat
7.4 high

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  • Snyk ID SNYK-DEBIAN10-GNUTLS28-571282
  • published 4 Jun 2020
  • disclosed 4 Jun 2020
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Introduced: 4 Jun 2020

CVE-2020-13777 Open this link in a new tab
CWE-327 Open this link in a new tab

How to fix?

Upgrade Debian:10 gnutls28 to version 3.6.7-4+deb10u4 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gnutls28 package and not the gnutls28 package as distributed by Debian. See How to fix? for Debian:10 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.

References