CVE-2020-13777

Upstream information

CVE-2020-13777 at MITRE

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.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having important severity.

CVSS v2 Scores
	National Vulnerability Database
Base Score	5.8
Vector	AV:N/AC:M/Au:N/C:P/I:P/A:N
Access Vector	Network
Access Complexity	Medium
Authentication	None
Confidentiality Impact	Partial
Integrity Impact	Partial
Availability Impact	None

CVSS v3 Scores
	National Vulnerability Database	SUSE
Base Score	7.4	7.4
Vector	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Access Vector	Network	Network
Access Complexity	High	High
Privileges Required	None	None
User Interaction	None	None
Scope	Unchanged	Unchanged
Confidentiality Impact	High	High
Integrity Impact	High	High
Availability Impact	None	None
CVSSv3 Version	3.1	3.1

SUSE Bugzilla entries: 1172461 [RESOLVED / FIXED], 1172506 [RESOLVED / FIXED]

SUSE Security Advisories:

SUSE-CU-2020:191-1, published Fri Jun 12 07:21:38 MDT 2020
SUSE-CU-2020:192-1, published Fri Jun 12 07:28:29 MDT 2020
SUSE-CU-2020:385-1, published Wed Aug 12 01:43:35 MDT 2020
SUSE-CU-2020:386-1, published Wed Aug 12 01:48:03 MDT 2020
SUSE-CU-2020:387-1, published Wed Aug 12 01:49:27 MDT 2020
SUSE-CU-2020:388-1, published Wed Aug 12 01:50:53 MDT 2020
SUSE-CU-2020:389-1, published Wed Aug 12 01:56:23 MDT 2020
SUSE-CU-2020:662-1, published Tue Nov 10 00:09:40 MST 2020
SUSE-CU-2020:663-1, published Tue Nov 10 00:12:16 MST 2020
SUSE-CU-2020:665-1, published Tue Nov 10 00:17:43 MST 2020
SUSE-SU-2020:1584-1, published Tue Jun 9 16:13:29 MDT 2020
openSUSE-SU-2020:0790-1, published Wed, 10 Jun 2020 22:46:04 +0200 (CEST)

List of released packages

Product(s)	Fixed package version(s)	References
Container caasp/v4/caasp-dex:2.16.0 Container caasp/v4/cilium-init:1.5.3 Container caasp/v4/cilium-operator:1.6.6 Container caasp/v4/cilium:1.6.6 Container caasp/v4/gangway:3.1.0 Container suse/sle15:15.0 Container suse/sle15:15.1 Image SLES15-EC2-CHOST-HVM-BYOS Image SLES15-SP1-CHOST-BYOS-Ali Image SLES15-SP1-CHOST-BYOS-Azure Image SLES15-SP1-CHOST-BYOS-EC2 Image SLES15-SP1-CHOST-BYOS-GCE Image SLES15-SP1-CHOST-BYOS-OpenStack Image caasp4/caasp-389-ds-image Image caasp4/caasp-busybox-image Image caasp4/caasp-caasp-dex-image Image caasp4/caasp-cert-exporter-image Image caasp4/caasp-cilium-etcd-operator-image Image caasp4/caasp-cilium-image Image caasp4/caasp-cilium-init-image Image caasp4/caasp-cilium-operator-image Image caasp4/caasp-cloud-provider-openstack-image Image caasp4/caasp-configmap-reload-image Image caasp4/caasp-coredns-image Image caasp4/caasp-curl-image Image caasp4/caasp-etcd-image Image caasp4/caasp-gangway-image Image caasp4/caasp-grafana-image Image caasp4/caasp-helm-tiller-image Image caasp4/caasp-hyperkube-image Image caasp4/caasp-k8s-sidecar-image Image caasp4/caasp-kube-state-metrics-image Image caasp4/caasp-kubernetes-client-image Image caasp4/caasp-kured-image Image caasp4/caasp-metrics-server-image Image caasp4/caasp-prometheus-alertmanager-image Image caasp4/caasp-prometheus-node-exporter-image Image caasp4/caasp-prometheus-pushgateway-image Image caasp4/caasp-prometheus-server-image Image caasp4/caasp-rsyslog-image Image caasp4/caasp-test-update-image Image caasp4/caasp-velero-image Image caasp4/caasp-velero-plugin-for-aws-image Image caasp4/caasp-velero-plugin-for-gcp-image Image caasp4/caasp-velero-plugin-for-microsoft-azure-image Image caasp4/caasp-velero-restic-restore-helper-image	`libgnutls30 >= 3.6.7-6.29.1`
SUSE Linux Enterprise High Performance Computing 15-ESPOS SUSE Linux Enterprise High Performance Computing 15-LTSS	`gnutls >= 3.6.7-6.29.1` `libgnutls-devel >= 3.6.7-6.29.1` `libgnutls30 >= 3.6.7-6.29.1` `libgnutls30-32bit >= 3.6.7-6.29.1` `libgnutls30-hmac >= 3.6.7-6.29.1` `libgnutls30-hmac-32bit >= 3.6.7-6.29.1` `libgnutlsxx-devel >= 3.6.7-6.29.1` `libgnutlsxx28 >= 3.6.7-6.29.1`	Patchnames: SUSE-SLE-Product-HPC-15-2020-1584
SUSE Linux Enterprise Module for Basesystem 15 SP1	`gnutls >= 3.6.7-6.29.1` `libgnutls-devel >= 3.6.7-6.29.1` `libgnutls30 >= 3.6.7-6.29.1` `libgnutls30-32bit >= 3.6.7-6.29.1` `libgnutls30-hmac >= 3.6.7-6.29.1` `libgnutls30-hmac-32bit >= 3.6.7-6.29.1` `libgnutlsxx-devel >= 3.6.7-6.29.1` `libgnutlsxx28 >= 3.6.7-6.29.1`	Patchnames: SUSE-SLE-Module-Basesystem-15-SP1-2020-1584
SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP1	`gnutls >= 3.6.7-6.29.1` `gnutls-guile >= 3.6.7-6.29.1` `libgnutls-devel-32bit >= 3.6.7-6.29.1`	Patchnames: SUSE-SLE-Module-Development-Tools-OBS-15-SP1-2020-1584
SUSE Linux Enterprise Server 15-LTSS	`gnutls >= 3.6.7-6.29.1` `libgnutls-devel >= 3.6.7-6.29.1` `libgnutls30 >= 3.6.7-6.29.1` `libgnutls30-32bit >= 3.6.7-6.29.1` `libgnutls30-hmac >= 3.6.7-6.29.1` `libgnutls30-hmac-32bit >= 3.6.7-6.29.1` `libgnutlsxx-devel >= 3.6.7-6.29.1` `libgnutlsxx28 >= 3.6.7-6.29.1`	Patchnames: SUSE-SLE-Product-SLES-15-2020-1584
SUSE Linux Enterprise Server for SAP Applications 15	`gnutls >= 3.6.7-6.29.1` `libgnutls-devel >= 3.6.7-6.29.1` `libgnutls30 >= 3.6.7-6.29.1` `libgnutls30-32bit >= 3.6.7-6.29.1` `libgnutls30-hmac >= 3.6.7-6.29.1` `libgnutls30-hmac-32bit >= 3.6.7-6.29.1` `libgnutlsxx-devel >= 3.6.7-6.29.1` `libgnutlsxx28 >= 3.6.7-6.29.1`	Patchnames: SUSE-SLE-Product-SLES_SAP-15-2020-1584
openSUSE Leap 15.1	`gnutls >= 3.6.7-lp151.2.18.1` `gnutls-debuginfo >= 3.6.7-lp151.2.18.1` `gnutls-debugsource >= 3.6.7-lp151.2.18.1` `gnutls-guile >= 3.6.7-lp151.2.18.1` `gnutls-guile-debuginfo >= 3.6.7-lp151.2.18.1` `libgnutls-dane-devel >= 3.6.7-lp151.2.18.1` `libgnutls-dane0 >= 3.6.7-lp151.2.18.1` `libgnutls-dane0-debuginfo >= 3.6.7-lp151.2.18.1` `libgnutls-devel >= 3.6.7-lp151.2.18.1` `libgnutls-devel-32bit >= 3.6.7-lp151.2.18.1` `libgnutls30 >= 3.6.7-lp151.2.18.1` `libgnutls30-32bit >= 3.6.7-lp151.2.18.1` `libgnutls30-32bit-debuginfo >= 3.6.7-lp151.2.18.1` `libgnutls30-debuginfo >= 3.6.7-lp151.2.18.1` `libgnutls30-hmac >= 3.6.7-lp151.2.18.1` `libgnutls30-hmac-32bit >= 3.6.7-lp151.2.18.1` `libgnutlsxx-devel >= 3.6.7-lp151.2.18.1` `libgnutlsxx28 >= 3.6.7-lp151.2.18.1` `libgnutlsxx28-debuginfo >= 3.6.7-lp151.2.18.1`	Patchnames: openSUSE-2020-790

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification.

Product(s)	Source package	State
SUSE Linux Enterprise 15-SP1 Module for Basesystem	gnutls	Released
SUSE Linux Enterprise High Availability Extension 11 SP4	gnutls	Not affected
SUSE Linux Enterprise High Performance Computing 12 SP4	gnutls	Not affected
SUSE Linux Enterprise High Performance Computing 12 SP5	gnutls	Not affected
SUSE Linux Enterprise High Performance Computing 15 LTSS	gnutls	Released
SUSE Linux Enterprise Server 11 SP4 LTSS	gnutls	Not affected
SUSE Linux Enterprise Server 12 SP1 LTSS	gnutls	Not affected
SUSE Linux Enterprise Server 12 SP2 BCL	gnutls	Not affected
SUSE Linux Enterprise Server 12 SP2 LTSS	gnutls	Not affected
SUSE Linux Enterprise Server 12 SP3 BCL	gnutls	Not affected
SUSE Linux Enterprise Server 12 SP3 LTSS	gnutls	Not affected
SUSE Linux Enterprise Server 12 SP4	gnutls	Not affected
SUSE Linux Enterprise Server 12 SP5	gnutls	Not affected
SUSE Linux Enterprise Server 15 LTSS	gnutls	Released
SUSE Linux Enterprise Server ESPOS 15	gnutls	Released
SUSE Linux Enterprise Server for SAP Applications 12 SP2	gnutls	Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP3	gnutls	Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP4	gnutls	Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP5	gnutls	Not affected
SUSE Linux Enterprise Software Development Kit 12 SP4	gnutls	Not affected
SUSE Linux Enterprise Software Development Kit 12 SP5	gnutls	Not affected