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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.3564.2 VMware ESXi, Workstation, Fusion, VMRC and Horizon Client updates address use-after-free and denial of service vulnerabilities 23 September 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: VMware ESXi VMware Workstation VMware Fusion VMware VMRC VMware Horizon Client Publisher: VMWare Operating System: Windows Mac OS Linux variants Virtualisation Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2019-5535 CVE-2019-5527 Original Bulletin: https://www.vmware.com/security/advisories/VMSA-2019-0014.html Revision History: September 23 2019: Vendor updated the advisory - issue 3a is not affected by whether a sound device is connected. September 20 2019: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- VMware Security Advisories +-----------------------------------------------------------------------------+ |Advisory |VMSA-2019-0014 | |ID | | |---------+-------------------------------------------------------------------| |Advisory |Important | |Severity | | |---------+-------------------------------------------------------------------| |CVSSv3 |4.7-8.5 | |Range | | |---------+-------------------------------------------------------------------| | |VMware ESXi, Workstation, Fusion, VMRC and Horizon Client updates | |Synopsis |address use-after-free and denial of service vulnerabilities. | | |(CVE-2019-5527, CVE-2019-5535) | |---------+-------------------------------------------------------------------| |Issue |2019-09-19 | |Date | | |---------+-------------------------------------------------------------------| |Updated |2019-09-19 (Initial Advisory) | |On | | |---------+-------------------------------------------------------------------| |CVE(s) |CVE-2019-5527, CVE-2019-5535 | +-----------------------------------------------------------------------------+ 1. Impacted Products * VMware vSphere ESXi (ESXi) * VMware Workstation Pro / Player (Workstation) * VMware Fusion Pro / Fusion (Fusion) * VMware Remote Console for Windows (VMRC for Windows) * VMware Remote Console for Linux (VMRC for Linux) * VMware Horizon Client for Windows * VMware Horizon Client for Linux * VMware Horizon Client for Mac 2. Introduction VMware ESXi, Workstation, Fusion, VMRC and Horizon Client updates address use-after-free and denial-of-service vulnerabilities. * CVE-2019-5527: ESXi, Workstation, Fusion, VMRC and Horizon Client use-after-free vulnerability * CVE-2019-5535: VMware Workstation and Fusion network denial-of-service vulnerability 3a. ESXi, Workstation, Fusion, VMRC and Horizon Client use-after-free vulnerability - CVE-2019-5527 Description: ESXi, Workstation, Fusion, VMRC and Horizon Client contain a use-after-free vulnerability in the virtual sound device. VMware has evaluated the severity of this issue to be in the Important severity range with a maximum CVSSv3 base score of 8.5. Known Attack Vectors: A local attacker with non-administrative access on the guest machine may exploit this issue to execute code on the host. Resolution: To remediate CVE-2019-5527, update/upgrade to the versions listed in the 'Fixed Version' column of the 'Resolution Matrix' found below. Workarounds: None. Additional Documentations: None. Notes: This issue can only be exploited if a valid sound back-end is not connected. Acknowledgements: VMware would like to thank Will Dormann of the CERT/CC and wenqunwang from 360 Codesafe Team of Legendsec for independently reporting this issue to us. Response Matrix: +------------------------------------------------------------------------------------------------------+ |Product |Version|Running|CVE |CVSSV3|Severity |Fixed Version |Workarounds|Additional| | | |On |Identifier | | | | |Documents | |-----------+-------+-------+-------------+------+---------+--------------------+-----------+----------| |ESXi |6.7 |Any |CVE-2019-5527|8.5 |Important|ESXi670-201904101-SG|None |None | |-----------+-------+-------+-------------+------+---------+--------------------+-----------+----------| |ESXi |6.5 |Any |CVE-2019-5527|8.5 |Important|ESXi650-201903401-SG|None |None | |-----------+-------+-------+-------------+------+---------+--------------------+-----------+----------| |ESXi |6.0 |Any |CVE-2019-5527|8.5 |Important|ESXi600-201909101-SG|None |None | |-----------+-------+-------+-------------+------+---------+--------------------+-----------+----------| |Workstation|15.x |Any |CVE-2019-5527|8.5 |Important|15.5.0 |None |None | |-----------+-------+-------+-------------+------+---------+--------------------+-----------+----------| |Fusion |11.x |OS X |CVE-2019-5527|8.5 |Important|11.5.0 |None |None | |-----------+-------+-------+-------------+------+---------+--------------------+-----------+----------| |VMRC for |10.x |Windows|CVE-2019-5527|8.5 |Important|10.0.5 and Later |None |None | |Windows | | | | | | | | | |-----------+-------+-------+-------------+------+---------+--------------------+-----------+----------| |VMRC for |10.x |Linux |CVE-2019-5527|8.5 |Important|10.0.5 and Later |None |None | |Linux | | | | | | | | | |-----------+-------+-------+-------------+------+---------+--------------------+-----------+----------| |Horizon |5.x and| | | | | | | | |Client for |prior |Windows|CVE-2019-5527|8.0 |Important|5.2.0 |None |None | |Windows | | | | | | | | | |-----------+-------+-------+-------------+------+---------+--------------------+-----------+----------| |Horizon |5.x and| | | | | | | | |Client for |prior |Linux |CVE-2019-5527|8.0 |Important|5.2.0 |None |None | |Linux | | | | | | | | | |-----------+-------+-------+-------------+------+---------+--------------------+-----------+----------| |Horizon |5.x and| | | | | | | | |Client for |prior |OS X |CVE-2019-5527|8.0 |Important|5.2.0 |None |None | |Mac | | | | | | | | | +------------------------------------------------------------------------------------------------------+ 3b. VMware Workstation and Fusion network denial-of-service vulnerability - - CVE-2019-5535 Description: VMware Workstation and Fusion contain a network denial-of-service vulnerability due to improper handling of certain IPv6 packets. VMware has evaluated the severity of this issue to be in the Moderate severity range with a maximum CVSSv3 base score of 4.7. Known Attack Vectors: An attacker may exploit this issue by sending a specially crafted IPv6 packet from a guest machine on the VMware NAT to disallow network access for all guest machines using VMware NAT mode. This issue can be exploited only if IPv6 mode for VMNAT is enabled. Resolution: To remediate CVE-2019-5535, update/upgrade to the versions listed in the 'Fixed Version' column of the 'Resolution Matrix' found below. Workarounds: None. Additional Documentations: None. Notes: IPv6 mode for VMNAT is not enabled by default. Acknowledgements: VMware would like to thank Carlos Garcia Prado from FireEye for reporting this issue to us. Response Matrix: +----------------------------------------------------------------------------------------+ |Product |Version|Running|CVE |CVSSV3|Severity|Fixed |Workarounds|Additional| | | |On |Identifier | | |Version| |Documents | |-----------+-------+-------+-------------+------+--------+-------+-----------+----------| |Workstation|15.x |Any |CVE-2019-5535|4.7 |Moderate|15.5.0 |None |None | |-----------+-------+-------+-------------+------+--------+-------+-----------+----------| |Fusion |11.x |OS X |CVE-2019-5535|4.7 |Moderate|11.5.0 |None |None | +----------------------------------------------------------------------------------------+ 4. References Mitre CVE Dictionary Links: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-5527 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-5535 Fixed Version(s) and Release Notes: VMware ESXi 6.7 U2 Downloads and Documentation: https://my.vmware.com/web/vmware/details?productId=742&downloadGroup=ESXI67U2 https://docs.vmware.com/en/VMware-vSphere/6.7/rn/ vsphere-esxi-67u2-release-notes.html VMware ESXi 6.5, Patch Release ESXi650-201903001 Downloads and Documentation: https://my.vmware.com/group/vmware/patch https://docs.vmware.com/en/VMware-vSphere/6.5/rn/esxi650-201903001.html VMware ESXi 6.0, Patch Release ESXi600-201909001 Downloads and Documentation: https://my.vmware.com/group/vmware/patch https://docs.vmware.com/en/VMware-vSphere/6.0/rn/esxi600-201909001.html VMware Workstation 15.5.0 Downloads and Documentation: https://www.vmware.com/go/downloadworkstation https://docs.vmware.com/en/VMware-Workstation-Pro/index.html VMware Fusion 11.5.0 Downloads and Documentation: https://www.vmware.com/go/downloadfusion https://docs.vmware.com/en/VMware-Fusion/index.html VMware Remote Console 10.0.x Downloads and Documentation: https://my.vmware.com/web/vmware/details?downloadGroup=VMRC1006&productId=742 https://docs.vmware.com/en/VMware-Remote-Console/10.0/rn/ VMware-Remote-Console-1006-Release-Notes.html VMware Horizon Client 5.2.0 Downloads and Documentation: https://my.vmware.com/web/vmware/info/slug/desktop_end_user_computing/ vmware_horizon_clients/5_0 https://docs.vmware.com/en/VMware-Horizon-Client/index.html 5. Change log 2019-09-19: VMSA-2019-0014 Initial security advisory in conjunction with the release of Workstation 15.5.0 and Fusion 11.5.0 on 2019-09-19. 6. Contact E-mail list for product security notifications and announcements: https://lists.vmware.com/cgi-bin/mailman/listinfo/security-announce This Security Advisory is posted to the following lists: security-announce@lists.vmware.com bugtraq@securityfocus.com fulldisclosure@seclists.org E-mail: security@vmware.com PGP key at: https://kb.vmware.com/kb/1055 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. 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If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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