Upstream information

CVE-2018-20023 at MITRE

Description

LibVNC before 8b06f835e259652b0ff026898014fc7297ade858 contains CWE-665: Improper Initialization vulnerability in VNC Repeater client code that allows attacker to read stack memory and can be abuse for information disclosure. Combined with another vulnerability, it can be used to leak stack memory layout and in bypassing ASLR

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 5
Vector AV:N/AC:L/Au:N/C:P/I:N/A:N
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 8.6 4.3
Vector AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Access Vector Network Network
Access Complexity Low Low
Privileges Required None None
User Interaction None Required
Scope Changed Unchanged
Confidentiality Impact High Low
Integrity Impact None None
Availability Impact None None
SUSE Bugzilla entry: 1120119 [RESOLVED / FIXED]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
SUSE Enterprise Storage 4
  • LibVNCServer >= 0.9.9-17.8.1
  • libvncclient0 >= 0.9.9-17.8.1
  • libvncserver0 >= 0.9.9-17.8.1
Patchnames:
SUSE-Storage-4-2019-60
SUSE Linux Enterprise Module for Open Buildservice Development Tools 15
  • LibVNCServer >= 0.9.10-4.3.1
  • LibVNCServer-devel >= 0.9.10-4.3.1
  • libvncserver0 >= 0.9.10-4.3.1
Patchnames:
SUSE-SLE-Module-Development-Tools-OBS-15-2019-80
SUSE Linux Enterprise Module for additional PackageHub packages 15
  • LibVNCServer >= 0.9.10-4.3.1
  • libvncserver0 >= 0.9.10-4.3.1
Patchnames:
SUSE-SLE-Module-Packagehub-Subpackages-15-2019-80
SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT
  • LibVNCServer >= 0.9.9-17.8.1
  • libvncclient0 >= 0.9.9-17.8.1
  • libvncserver0 >= 0.9.9-17.8.1
Patchnames:
SUSE-SLE-POS-12-SP2-CLIENT-2019-60
SUSE Linux Enterprise Server 12 SP1-LTSS
  • LibVNCServer >= 0.9.9-17.8.1
  • libvncclient0 >= 0.9.9-17.8.1
  • libvncserver0 >= 0.9.9-17.8.1
Patchnames:
SUSE-SLE-SERVER-12-SP1-2019-60
SUSE Linux Enterprise Server 12 SP2-BCL
  • LibVNCServer >= 0.9.9-17.8.1
  • libvncclient0 >= 0.9.9-17.8.1
  • libvncserver0 >= 0.9.9-17.8.1
Patchnames:
SUSE-SLE-SERVER-12-SP2-BCL-2019-60
SUSE Linux Enterprise Server 12 SP2-ESPOS
  • LibVNCServer >= 0.9.9-17.8.1
  • libvncclient0 >= 0.9.9-17.8.1
  • libvncserver0 >= 0.9.9-17.8.1
Patchnames:
SUSE-SLE-SERVER-12-SP2-ESPOS-2019-60
SUSE Linux Enterprise Server 12 SP2-LTSS
  • LibVNCServer >= 0.9.9-17.8.1
  • libvncclient0 >= 0.9.9-17.8.1
  • libvncserver0 >= 0.9.9-17.8.1
Patchnames:
SUSE-SLE-SERVER-12-SP2-2019-60
SUSE Linux Enterprise Server 12 SP3
  • LibVNCServer >= 0.9.9-17.8.1
  • libvncclient0 >= 0.9.9-17.8.1
  • libvncserver0 >= 0.9.9-17.8.1
Patchnames:
SUSE-SLE-SERVER-12-SP3-2019-60
SUSE Linux Enterprise Server 12 SP4
  • LibVNCServer >= 0.9.9-17.8.1
  • libvncclient0 >= 0.9.9-17.8.1
  • libvncserver0 >= 0.9.9-17.8.1
Patchnames:
SUSE-SLE-SERVER-12-SP4-2019-60
SUSE Linux Enterprise Server 12-LTSS
  • LibVNCServer >= 0.9.9-17.8.1
  • libvncclient0 >= 0.9.9-17.8.1
  • libvncserver0 >= 0.9.9-17.8.1
Patchnames:
SUSE-SLE-SERVER-12-2019-60
SUSE Linux Enterprise Server for SAP Applications 12 SP1
  • LibVNCServer >= 0.9.9-17.8.1
  • libvncclient0 >= 0.9.9-17.8.1
  • libvncserver0 >= 0.9.9-17.8.1
Patchnames:
SUSE-SLE-SAP-12-SP1-2019-60
SUSE Linux Enterprise Server for SAP Applications 12 SP1-LTSS
  • LibVNCServer >= 0.9.9-17.8.1
  • libvncclient0 >= 0.9.9-17.8.1
  • libvncserver0 >= 0.9.9-17.8.1
Patchnames:
SUSE-SLE-SERVER-12-SP1-2019-60
SUSE Linux Enterprise Server for SAP Applications 12 SP2
  • LibVNCServer >= 0.9.9-17.8.1
  • libvncclient0 >= 0.9.9-17.8.1
  • libvncserver0 >= 0.9.9-17.8.1
Patchnames:
SUSE-SLE-SAP-12-SP2-2019-60
SUSE Linux Enterprise Server for SAP Applications 12 SP2-BCL
  • LibVNCServer >= 0.9.9-17.8.1
  • libvncclient0 >= 0.9.9-17.8.1
  • libvncserver0 >= 0.9.9-17.8.1
Patchnames:
SUSE-SLE-SERVER-12-SP2-BCL-2019-60
SUSE Linux Enterprise Server for SAP Applications 12 SP2-ESPOS
  • LibVNCServer >= 0.9.9-17.8.1
  • libvncclient0 >= 0.9.9-17.8.1
  • libvncserver0 >= 0.9.9-17.8.1
Patchnames:
SUSE-SLE-SERVER-12-SP2-ESPOS-2019-60
SUSE Linux Enterprise Server for SAP Applications 12 SP2-LTSS
  • LibVNCServer >= 0.9.9-17.8.1
  • libvncclient0 >= 0.9.9-17.8.1
  • libvncserver0 >= 0.9.9-17.8.1
Patchnames:
SUSE-SLE-SERVER-12-SP2-2019-60
SUSE Linux Enterprise Server for SAP Applications 12 SP3
  • LibVNCServer >= 0.9.9-17.8.1
  • libvncclient0 >= 0.9.9-17.8.1
  • libvncserver0 >= 0.9.9-17.8.1
Patchnames:
SUSE-SLE-SERVER-12-SP3-2019-60
SUSE Linux Enterprise Server for SAP Applications 12 SP4
  • LibVNCServer >= 0.9.9-17.8.1
  • libvncclient0 >= 0.9.9-17.8.1
  • libvncserver0 >= 0.9.9-17.8.1
Patchnames:
SUSE-SLE-SERVER-12-SP4-2019-60
SUSE Linux Enterprise Server for SAP Applications 12-LTSS
  • LibVNCServer >= 0.9.9-17.8.1
  • libvncclient0 >= 0.9.9-17.8.1
  • libvncserver0 >= 0.9.9-17.8.1
Patchnames:
SUSE-SLE-SERVER-12-2019-60
SUSE Linux Enterprise Software Development Kit 12 SP3
  • LibVNCServer >= 0.9.9-17.8.1
  • LibVNCServer-devel >= 0.9.9-17.8.1
Patchnames:
SUSE-SLE-SDK-12-SP3-2019-60
SUSE Linux Enterprise Software Development Kit 12 SP4
  • LibVNCServer >= 0.9.9-17.8.1
  • LibVNCServer-devel >= 0.9.9-17.8.1
Patchnames:
SUSE-SLE-SDK-12-SP4-2019-60
SUSE Linux Enterprise Workstation Extension 15
  • LibVNCServer >= 0.9.10-4.3.1
  • libvncclient0 >= 0.9.10-4.3.1
Patchnames:
SUSE-SLE-Product-WE-15-2019-80
SUSE OpenStack Cloud 7
  • LibVNCServer >= 0.9.9-17.8.1
  • libvncclient0 >= 0.9.9-17.8.1
  • libvncserver0 >= 0.9.9-17.8.1
Patchnames:
SUSE-OpenStack-Cloud-7-2019-60
openSUSE Leap 15.0
  • LibVNCServer >= 0.9.10-lp150.3.3.1
  • LibVNCServer-debugsource >= 0.9.10-lp150.3.3.1
  • LibVNCServer-devel >= 0.9.10-lp150.3.3.1
  • libvncclient0 >= 0.9.10-lp150.3.3.1
  • libvncclient0-debuginfo >= 0.9.10-lp150.3.3.1
  • libvncserver0 >= 0.9.10-lp150.3.3.1
  • libvncserver0-debuginfo >= 0.9.10-lp150.3.3.1
Patchnames:
openSUSE-2019-53
openSUSE Leap 42.3
  • LibVNCServer >= 0.9.9-16.6.1
  • LibVNCServer-debugsource >= 0.9.9-16.6.1
  • LibVNCServer-devel >= 0.9.9-16.6.1
  • libvncclient0 >= 0.9.9-16.6.1
  • libvncclient0-debuginfo >= 0.9.9-16.6.1
  • libvncserver0 >= 0.9.9-16.6.1
  • libvncserver0-debuginfo >= 0.9.9-16.6.1
  • linuxvnc >= 0.9.9-16.6.1
  • linuxvnc-debuginfo >= 0.9.9-16.6.1
Patchnames:
openSUSE-2019-45


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 High Performance Computing 12 LibVNCServer Released
SUSE Linux Enterprise SDK 11 SP4 LibVNCServer Not affected
SUSE Linux Enterprise SDK 12 SP3 LibVNCServer Released
SUSE Linux Enterprise SDK 12 SP4 LibVNCServer Released
SUSE Linux Enterprise Server 11 SP3 LTSS LibVNCServer Not affected
SUSE Linux Enterprise Server 11 SP4 LibVNCServer Not affected
SUSE Linux Enterprise Server 12 GA LTSS LibVNCServer Released
SUSE Linux Enterprise Server 12 SP1 LTSS LibVNCServer Released
SUSE Linux Enterprise Server 12 SP2 LTSS LibVNCServer Released
SUSE Linux Enterprise Server 12 SP3 LibVNCServer Released
SUSE Linux Enterprise Server 12 SP4 LibVNCServer Released
SUSE Linux Enterprise Server for SAP Applications 11 SP3 LibVNCServer Not affected
SUSE Linux Enterprise Server for SAP Applications 12 GA LibVNCServer Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP2 LibVNCServer Released
SUSE Linux Enterprise Server for SAP Applications 12 SP4 LibVNCServer Released
SUSE Linux Enterprise Workstation Extension 15 GA LibVNCServer Released