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Red Hat: CVE-2020-13777: CVE-2020-13777 gnutls: session resumption works without master key allowing MITM (Multiple Advisories)

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Red Hat: CVE-2020-13777: CVE-2020-13777 gnutls: session resumption works without master key allowing MITM (Multiple Advisories)

Severity
6
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:N)
Published
06/04/2020
Created
06/24/2020
Added
06/23/2020
Modified
12/15/2023

Description

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.

Solution(s)

  • redhat-upgrade-gnutls
  • redhat-upgrade-gnutls-c
  • redhat-upgrade-gnutls-c-debuginfo
  • redhat-upgrade-gnutls-dane
  • redhat-upgrade-gnutls-dane-debuginfo
  • redhat-upgrade-gnutls-debuginfo
  • redhat-upgrade-gnutls-debugsource
  • redhat-upgrade-gnutls-devel
  • redhat-upgrade-gnutls-utils
  • redhat-upgrade-gnutls-utils-debuginfo

References

  • DSA-4697
  • CVE-2020-13777
  • RHSA-2020:2637
  • RHSA-2020:2638

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