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.

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Advisories
Source ID Title
Debian DSA Debian DSA DSA-4697-1 gnutls28 security update
EUVD EUVD EUVD-2020-5994 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.
Ubuntu USN Ubuntu USN USN-4384-1 GnuTLS vulnerability
Fixes

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-04T12:25:16.491Z

Reserved: 2020-06-03T00:00:00

Link: CVE-2020-13777

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2020-06-04T07:15:10.000

Modified: 2024-11-21T05:01:50.330

Link: CVE-2020-13777

cve-icon Redhat

Severity : Important

Publid Date: 2020-06-03T00:00:00Z

Links: CVE-2020-13777 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses