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CVE-2020-13777

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.

Risk Information

Base Score
7.4
MODERATE
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS Score
Exploitation Probability
0.625

Associated Vulnerability

VulnerabilityOS Platform
GNU TLS library (USN-4384-1) libgnutls30_3.6.9-5ubuntu1.2_i386.debLinux
GNU TLS library (USN-4384-1) libgnutls30_3.6.9-5ubuntu1.2_amd64.debLinux
GNU TLS library (USN-4384-1) libgnutls30_3.6.13-2ubuntu1.1_i386.debLinux
GNU TLS library (USN-4384-1) libgnutls30_3.6.13-2ubuntu1.1_amd64.debLinux
(RHSA-2020:2637) gnutls security update gnutls-3.6.8-11.el8_2.i686.rpmLinux
(RHSA-2020:2637) gnutls security update gnutls-3.6.8-11.el8_2.x86_64.rpmLinux
(RHSA-2020:2637) gnutls security update gnutls-c++-3.6.8-11.el8_2.i686.rpmLinux
(RHSA-2020:2637) gnutls security update gnutls-c++-3.6.8-11.el8_2.x86_64.rpmLinux
(RHSA-2020:2637) gnutls security update gnutls-dane-3.6.8-11.el8_2.i686.rpmLinux
(RHSA-2020:2637) gnutls security update gnutls-dane-3.6.8-11.el8_2.x86_64.rpmLinux
(RHSA-2020:2637) gnutls security update gnutls-debugsource-3.6.8-11.el8_2.i686.rpmLinux
(RHSA-2020:2637) gnutls security update gnutls-debugsource-3.6.8-11.el8_2.x86_64.rpmLinux
(RHSA-2020:2637) gnutls security update gnutls-devel-3.6.8-11.el8_2.i686.rpmLinux
(RHSA-2020:2637) gnutls security update gnutls-devel-3.6.8-11.el8_2.x86_64.rpmLinux
(RHSA-2020:2637) gnutls security update gnutls-utils-3.6.8-11.el8_2.x86_64.rpmLinux
Gnutls update (ELSA-2020-2637) gnutls-3.6.8-11.el8_2.x86_64.rpmLinux
Gnutls-c++ update (ELSA-2020-2637) gnutls-c++-3.6.8-11.el8_2.x86_64.rpmLinux
Gnutls-dane update (ELSA-2020-2637) gnutls-dane-3.6.8-11.el8_2.x86_64.rpmLinux
Gnutls-devel update (ELSA-2020-2637) gnutls-devel-3.6.8-11.el8_2.x86_64.rpmLinux
Gnutls-utils update (ELSA-2020-2637) gnutls-utils-3.6.8-11.el8_2.x86_64.rpmLinux
Gnutls update (ELSA-2020-2637) gnutls-3.6.8-11.el8_2.i686.rpmLinux
Gnutls-c++ update (ELSA-2020-2637) gnutls-c++-3.6.8-11.el8_2.i686.rpmLinux
Gnutls-dane update (ELSA-2020-2637) gnutls-dane-3.6.8-11.el8_2.i686.rpmLinux
Gnutls-devel update (ELSA-2020-2637) gnutls-devel-3.6.8-11.el8_2.i686.rpmLinux
(CESA-2020:2637) gnutls security update gnutls-3.6.8-11.el8_2.i686.rpmLinux
(CESA-2020:2637) gnutls security update gnutls-3.6.8-11.el8_2.x86_64.rpmLinux
(CESA-2020:2637) gnutls security update gnutls-c++-3.6.8-11.el8_2.i686.rpmLinux
(CESA-2020:2637) gnutls security update gnutls-c++-3.6.8-11.el8_2.x86_64.rpmLinux
(CESA-2020:2637) gnutls security update gnutls-dane-3.6.8-11.el8_2.i686.rpmLinux
(CESA-2020:2637) gnutls security update gnutls-dane-3.6.8-11.el8_2.x86_64.rpmLinux
(CESA-2020:2637) gnutls security update gnutls-devel-3.6.8-11.el8_2.i686.rpmLinux
(CESA-2020:2637) gnutls security update gnutls-devel-3.6.8-11.el8_2.x86_64.rpmLinux
(CESA-2020:2637) gnutls security update gnutls-utils-3.6.8-11.el8_2.x86_64.rpmLinux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234