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CVE-2020-13777 Detail

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 3.x Severity and Vector Strings:

NIST CVSS score
NIST: NVD
Base Score:  7.4 HIGH
Vector:  CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00015.html Broken Link 
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00015.html Broken Link 
https://gnutls.org/security-new.html#GNUTLS-SA-2020-06-03 Vendor Advisory 
https://gnutls.org/security-new.html#GNUTLS-SA-2020-06-03 Vendor Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6C4DHUKV6M6SJ5CV6KVHZNHNF7HCUE5P/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6C4DHUKV6M6SJ5CV6KVHZNHNF7HCUE5P/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6RTXZOXC4MHTFE2HKY6IAZMF2WHD2WMV/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6RTXZOXC4MHTFE2HKY6IAZMF2WHD2WMV/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RRQBFK3UZ7SV76IYDTS4PS6ABS2DSJHK/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RRQBFK3UZ7SV76IYDTS4PS6ABS2DSJHK/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VMB3UGI5H5RCFRU6OGRPMNUCNLJGEN7Y/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VMB3UGI5H5RCFRU6OGRPMNUCNLJGEN7Y/
https://security.gentoo.org/glsa/202006-01 Third Party Advisory 
https://security.gentoo.org/glsa/202006-01 Third Party Advisory 
https://security.netapp.com/advisory/ntap-20200619-0004/ Third Party Advisory 
https://security.netapp.com/advisory/ntap-20200619-0004/ Third Party Advisory 
https://usn.ubuntu.com/4384-1/ Third Party Advisory 
https://usn.ubuntu.com/4384-1/ Third Party Advisory 
https://www.debian.org/security/2020/dsa-4697 Third Party Advisory 
https://www.debian.org/security/2020/dsa-4697 Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-327 Use of a Broken or Risky Cryptographic Algorithm cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:*
   Show Matching CPE(s)
From (including)
3.6.0
Up to (excluding)
3.6.14

Configuration 2 ( hide )
 cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
   Show Matching CPE(s)

Configuration 3 ( hide )
 cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
   Show Matching CPE(s)

Configuration 4 ( hide )
 cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
   Show Matching CPE(s)

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

13 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2020-13777
NVD Published Date:
06/04/2020
NVD Last Modified:
11/21/2024
Source:
MITRE