Upstream information

CVE-2018-20340 at MITRE

Description

Yubico libu2f-host 1.1.6 contains unchecked buffers in devs.c, which could enable a malicious token to exploit a buffer overflow. An attacker could use this to attempt to execute malicious code using a crafted USB device masquerading as a security token on a computer where the affected library is currently in use. It is not possible to perform this attack with a genuine YubiKey.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having moderate severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 4.6
Vector AV:L/AC:L/Au:N/C:P/I:P/A:P
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 6.8 6.4
Vector CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Access Vector Physical Physical
Access Complexity Low High
Privileges Required None None
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact High High
Integrity Impact High High
Availability Impact High High
CVSSv3 Version 3 3
SUSE Bugzilla entry: 1124781 [RESOLVED / FIXED]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
SUSE Linux Enterprise Desktop 12 SP4
  • libu2f-host0 >= 1.1.6-3.5.1
  • pam_u2f >= 1.0.8-3.3.1
Patchnames:
SUSE-SLE-DESKTOP-12-SP4-2019-1749
SUSE Linux Enterprise High Performance Computing 12 SP5
SUSE Linux Enterprise Server 12 SP5
  • libu2f-host0 >= 1.1.6-3.5.1
SUSE Linux Enterprise Module for Basesystem 15 SP2
  • libu2f-host-devel >= 1.1.10-3.9.1
  • libu2f-host0 >= 1.1.10-3.9.1
  • u2f-host >= 1.1.10-3.9.1
Patchnames:
SUSE-SLE-Module-Basesystem-15-SP2-2021-1755
SUSE Linux Enterprise Module for Basesystem 15 SP3
  • libu2f-host-devel >= 1.1.10-3.9.1
  • libu2f-host0 >= 1.1.10-3.9.1
  • u2f-host >= 1.1.10-3.9.1
Patchnames:
SUSE-SLE-Module-Basesystem-15-SP3-2021-1755
SUSE Linux Enterprise Module for Basesystem 15
  • libu2f-host-devel >= 1.1.6-3.3.3
  • libu2f-host0 >= 1.1.6-3.3.3
Patchnames:
SUSE-SLE-Module-Basesystem-15-2019-1340
SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP2
  • libu2f-host-doc >= 1.1.10-3.9.1
  • u2f-host >= 1.1.10-3.9.1
Patchnames:
SUSE-SLE-Module-Development-Tools-OBS-15-SP2-2021-1755
SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP3
  • libu2f-host-doc >= 1.1.10-3.9.1
  • u2f-host >= 1.1.10-3.9.1
Patchnames:
SUSE-SLE-Module-Development-Tools-OBS-15-SP3-2021-1755
SUSE Linux Enterprise Module for Open Buildservice Development Tools 15
  • libu2f-host-doc >= 1.1.6-3.3.3
  • u2f-host >= 1.1.6-3.3.3
Patchnames:
SUSE-SLE-Module-Development-Tools-OBS-15-2019-1340
SUSE Linux Enterprise Server 12 SP4
SUSE Linux Enterprise Server for SAP Applications 12 SP4
  • libu2f-host0 >= 1.1.6-3.5.1
  • pam_u2f >= 1.0.8-3.3.1
Patchnames:
SUSE-SLE-SERVER-12-SP4-2019-1749
openSUSE Leap 15.0
  • libu2f-host-debuginfo >= 1.1.6-lp150.7.1
  • libu2f-host-debugsource >= 1.1.6-lp150.7.1
  • libu2f-host-devel >= 1.1.6-lp150.7.1
  • libu2f-host-doc >= 1.1.6-lp150.7.1
  • libu2f-host0 >= 1.1.6-lp150.7.1
  • libu2f-host0-debuginfo >= 1.1.6-lp150.7.1
  • u2f-host >= 1.1.6-lp150.7.1
  • u2f-host-debuginfo >= 1.1.6-lp150.7.1
Patchnames:
openSUSE-2019-1475
openSUSE Leap 15.1
  • libu2f-host-debuginfo >= 1.1.6-lp151.2.3.1
  • libu2f-host-debugsource >= 1.1.6-lp151.2.3.1
  • libu2f-host-devel >= 1.1.6-lp151.2.3.1
  • libu2f-host-doc >= 1.1.6-lp151.2.3.1
  • libu2f-host0 >= 1.1.6-lp151.2.3.1
  • libu2f-host0-debuginfo >= 1.1.6-lp151.2.3.1
  • u2f-host >= 1.1.6-lp151.2.3.1
  • u2f-host-debuginfo >= 1.1.6-lp151.2.3.1
Patchnames:
openSUSE-2019-1475
openSUSE Leap 15.2
  • libu2f-host-debuginfo >= 1.1.10-lp152.4.3.1
  • libu2f-host-debugsource >= 1.1.10-lp152.4.3.1
  • libu2f-host-devel >= 1.1.10-lp152.4.3.1
  • libu2f-host-doc >= 1.1.10-lp152.4.3.1
  • libu2f-host0 >= 1.1.10-lp152.4.3.1
  • libu2f-host0-debuginfo >= 1.1.10-lp152.4.3.1
  • u2f-host >= 1.1.10-lp152.4.3.1
  • u2f-host-debuginfo >= 1.1.10-lp152.4.3.1
Patchnames:
openSUSE-2021-799
openSUSE Leap 15.3
  • libu2f-host-devel >= 1.1.10-3.9.1
  • libu2f-host-doc >= 1.1.10-3.9.1
  • libu2f-host0 >= 1.1.10-3.9.1
  • u2f-host >= 1.1.10-3.9.1
Patchnames:
openSUSE-SLE-15.3-2021-1755


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 CaaS Platform 4.0 libu2f-host In progress
SUSE Enterprise Storage 6 libu2f-host In progress
SUSE Linux Enterprise Desktop 12 SP4 libu2f-host Released
SUSE Linux Enterprise High Performance Computing 12 SP4 libu2f-host Released
SUSE Linux Enterprise High Performance Computing 12 SP5 libu2f-host Released
SUSE Linux Enterprise High Performance Computing 12 SP5 pam_u2f Released
SUSE Linux Enterprise High Performance Computing 15 LTSS libu2f-host In progress
SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS libu2f-host In progress
SUSE Linux Enterprise Module for Basesystem 15 libu2f-host Released
SUSE Linux Enterprise Module for Basesystem 15 SP2 libu2f-host Released
SUSE Linux Enterprise Module for Basesystem 15 SP3 libu2f-host Released
SUSE Linux Enterprise Server 12 SP4 libu2f-host Released
SUSE Linux Enterprise Server 12 SP4 ESPOS libu2f-host Released
SUSE Linux Enterprise Server 12 SP4 LTSS libu2f-host Released
SUSE Linux Enterprise Server 12 SP5 libu2f-host Released
SUSE Linux Enterprise Server 12 SP5 pam_u2f Released
SUSE Linux Enterprise Server 15 LTSS libu2f-host In progress
SUSE Linux Enterprise Server 15 SP1 Business Critical Linux libu2f-host In progress
SUSE Linux Enterprise Server 15 SP1 LTSS libu2f-host In progress
SUSE Linux Enterprise Server ESPOS 15 libu2f-host In progress
SUSE Linux Enterprise Server for SAP Applications 12 SP4 libu2f-host Released
SUSE Linux Enterprise Server for SAP Applications 12 SP5 libu2f-host Released
SUSE Linux Enterprise Server for SAP Applications 12 SP5 pam_u2f Released
SUSE Linux Enterprise Server for SAP Applications 15 libu2f-host In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP1 libu2f-host In progress
SUSE Manager Proxy 4.0 libu2f-host In progress
SUSE Manager Retail Branch Server 4.0 libu2f-host In progress
SUSE Manager Server 4.0 libu2f-host In progress
SUSE OpenStack Cloud 9 libu2f-host Released
SUSE OpenStack Cloud Crowbar 9 libu2f-host Released