==================================================================== CERT-Renater Note d'Information No. 2021/VULN335 _____________________________________________________________________ DATE : 23/06/2021 HARDWARE PLATFORM(S): / OPERATING SYSTEM(S): Systems running VMware Tools for Windows versions prior to 11.2.6, VMRC for Windows versions prior to 12.0.1, App Volumes versions prior to 2103, 2.18.10. ===================================================================== https://www.vmware.com/security/advisories/VMSA-2021-0013.html _____________________________________________________________________ Important Advisory ID: VMSA-2021-0013 CVSSv3 Range: 7.8 Issue Date: 2021-06-22 Updated On: 2021-06-22 (Initial Advisory) CVE(s): CVE-2021-21999 Synopsis: VMware Tools, VMRC and VMware App Volumes update addresses a local privilege escalation vulnerability (CVE-2021-21999) 1. Impacted Products VMware Tools for Windows VMware Remote Console for Windows (VMRC for Windows) VMware App Volumes 2. Introduction A local privilege escalation vulnerability in VMware Tools for Windows, VMRC for Windows and VMware App Volumes was privately reported to VMware. Updates are available to remediate this vulnerability in affected VMware products. 3. VMware Tools, VMRC and VMware App Volumes update addresses a local privilege escalation vulnerability (CVE-2021-21999) Description VMware Tools for Windows, VMRC for Windows and VMware App Volumes contain a local privilege escalation vulnerability. VMware has evaluated the severity of this issue to be in the Important severity range with a maximum CVSSv3 base score of 7.8. Known Attack Vectors An attacker with normal access to a virtual machine may exploit this issue by placing a malicious file renamed as `openssl.cnf' in an unrestricted directory which would allow code to be executed with elevated privileges. Resolution To remediate CVE-2021-21999 apply the patches listed in the 'Fixed Version' column of the 'Response Matrix' found below. Workarounds None. Additional Documentation None. Notes None. Acknowledgements VMware would like to thank Zeeshan Shaikh (@bugzzzhunter) from NotSoSecure working with Trend Micro Zero Day Initiative and Hou JingYi (@hjy79425575) of Qihoo 360 for reporting this vulnerability to us. Response Matrix Product Version Running On CVE Identifier CVSSv3 Severity Fixed Version Workarounds Additional Documentation VMware Tools for Windows 11.x.y and prior Windows CVE-2021-21999 7.8 important 11.2.6 None None VMRC for Windows 12.x Windows CVE-2021-21999 7.8 important 12.0.1 None None App Volumes 4 Windows CVE-2021-21999 7.8 important 2103 None None App Volumes 2.x Windows CVE-2021-21999 7.8 important 2.18.10 None None 4. References Fixed Version(s) and Release Notes: VMware Tools for Windows 11.2.6 Downloads and Documentation: https://my.vmware.com/web/vmware/downloads/info/slug/datacenter_cloud_infrastructure/vmware_tools/11_x https://docs.vmware.com/en/VMware-Tools/11.2/rn/VMware-Tools-1126-Release-Notes.html VMware Remote Console for Windows 12.0.1 Downloads and Documentation: https://my.vmware.com/web/vmware/downloads/details?downloadGroup=VMRC1201&productId=974 https://docs.vmware.com/en/VMware-Remote-Console/12.0/rn/VMware-Remote-Console-1201-Release-Notes.html VMware App Volumes 4 2103 Downloads and Documentation: https://my.vmware.com/web/vmware/downloads/details?downloadGroup=AV-440-ADV&productId=961&rPId=65809 https://docs.vmware.com/en/VMware-App-Volumes/2103/rn/VMware-App-Volumes-4-version-2103.html VMware App Volumes 2.18.10 Downloads and Documentation: https://my.vmware.com/web/vmware/downloads/details?downloadGroup=AV-21810&productId=534&rPId=63696 https://docs.vmware.com/en/VMware-App-Volumes/2.18.10/rn/VMware-App-Volumes-21810-Release-Notes.html Mitre CVE Dictionary Links: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21999 FIRST CVSSv3 Calculator: CVE-2021-21999: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H 5. Change Log 2021-06-22 VMSA-2021-0013 Initial security advisory. 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 VMware Security Advisories https://www.vmware.com/security/advisories VMware Security Response Policy https://www.vmware.com/support/policies/security_response.html VMware Lifecycle Support Phases https://www.vmware.com/support/policies/lifecycle.html VMware Security & Compliance Blog https://blogs.vmware.com/security Twitter https://twitter.com/VMwareSRC Copyright 2021 VMware Inc. 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