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CVE-2020-13777

nvd nist
Published: Jun 4, 2020Modified: Jun 17, 2026

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7.4
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Exploitability: 2.2 / Impact: 5.2
Source: NVD

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.

Affected (6)

Products: Gnu: Gnutls · Fedoraproject: Fedora · Canonical: Ubuntu Linux · +1 more
Show all products
1 product
Gnutls
1 product
Fedora
1 product
Ubuntu Linux
1 product
Debian Linux
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
From 3.6.0 to 3.6.14
Configuration B
2 vulnerable
Vulnerable SoftwareAffected Versions
Fedoraproject
Version 31
Version 32
Configuration C
2 vulnerable
Vulnerable SoftwareAffected Versions
Canonical
Version 19.10
Version 20.04
Configuration D
1 vulnerable
Vulnerable SoftwareAffected Versions
Version 10.0

References (20)

Source: cve@mitre.org
Third Party Advisory
Source: cve@mitre.org
Third Party Advisory
Source: cve@mitre.org
Third Party Advisory
Source: cve@mitre.org
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory

Timeline

No history available yet.