==================================================================== CERT-Renater Note d'Information No. 2019/VULN336 _____________________________________________________________________ DATE : 25/10/2019 HARDWARE PLATFORM(S): / OPERATING SYSTEM(S):Systems running vCenter Server Appliance versions 6. ===================================================================== https://www.vmware.com/security/advisories/VMSA-2019-0018.html _____________________________________________________________________ VMware Security Advisories +---------+-------------------------------------------------------------------+ |Advisory |VMSA-2019-0018 | |ID | | +---------+-------------------------------------------------------------------+ |Advisory |Moderate | |Severity | | +---------+-------------------------------------------------------------------+ |CVSSv3 |6.8 | |Range | | +---------+-------------------------------------------------------------------+ | |VMware vCenter Server Appliance updates address sensitive | |Synopsis |information disclosure vulnerability in backup and restore | | |functions (CVE-2019-5537, CVE-2019-5538) | +---------+-------------------------------------------------------------------+ |Issue |2019-10-24 | |Date | | +---------+-------------------------------------------------------------------+ |Updated |2019-10-24 (Initial Advisory) | |On | | +---------+-------------------------------------------------------------------+ |CVE(s) |CVE-2019-5537, CVE-2019-5538 | +---------+-------------------------------------------------------------------+ 1. Impacted Products VMware vCenter Server Appliance 2. Introduction Vulnerabilities in the File-Based Backup and Restore functions of vCenter Server Appliance were privately reported to the VMware Security Response Center. Updates are available which allow enablement of strict certificate validation to remediate these vulnerabilities. 3. VMware vCenter Server Appliance sensitive information disclosure vulnerabilities in File-Based Backup and Restore functions (CVE-2019-5537 and CVE-2019-5538) Description: Sensitive information disclosure vulnerabilities resulting from a lack of certificate validation during the File-Based Backup and Restore operations of VMware vCenter Server Appliance may allow a malicious actor to intercept sensitive data in transit over FTPS and HTTPS (CVE-2019-5537) as well as SCP (CVE-2019-5538). VMware has evaluated the severity of these issues to be in the Moderate severity range with a maximum CVSSv3 base score of 6.8. Known Attack Vectors: A malicious actor with man-in-the-middle positioning between vCenter Server Appliance and a backup target may be able to intercept sensitive data in transit during File-Based Backup and Restore operations. Resolution: To remediate CVE-2019-5537 and CVE-2019-5538 first apply the patches listed in the 'Fixed Version' column and then follow the instructions documented in KB75156 listed in the 'Additional Documentation' column found in the 'Resolution Matrix' below to enforce strict certificate validation. Workarounds: None. Additional Documentation: To avoid breaking currently configured File-Based Backup and Restore workflows, remediation of CVE-2019-5537 and CVE-2019-5538 is not enabled by default. After upgrading vCenter Server Appliance, follow the steps in KB75156 to enforce strict certificate validation. Notes: None. Acknowledgements: VMware would like to thank Thorsten Tullmann, Karlsruhe Institute of Technology and James Renken for independently reporting these issues to us. Response Matrix: +---------+-------+---------+--------------+------+--------+----------+-----------+----------+ |Product |Version|Running |CVE Identifier|CVSSV3|Severity|Fixed |Workarounds|Additional| | | |On | | | |Version | |Documents | +---------+-------+---------+--------------+------+--------+----------+-----------+----------+ |vCenter | |Virtual |CVE-2019-5537,| | | | | | |Server |6.7 |Appliance|CVE-2019-5538 |6.8 |Moderate|6.7u3a |None |KB75156 | |Appliance| | | | | | | | | +---------+-------+---------+--------------+------+--------+----------+-----------+----------+ |vCenter | |Virtual |CVE-2019-5537,| | | | | | |Server |6.5 |Appliance|CVE-2019-5538 |6.8 |Moderate|6.5u3d |None |KB75156 | |Appliance| | | | | | | | | +---------+-------+---------+--------------+------+--------+----------+-----------+----------+ |vCenter | |Virtual |CVE-2019-5537,| | | | | | |Server |6.0 |Appliance|CVE-2019-5538 |N/A |N/A |Unaffected|None |None | |Appliance| | | | | | | | | +---------+-------+---------+--------------+------+--------+----------+-----------+----------+ 4. References FIRST CVSSv3 Calculator: https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/ I:N/A:N Mitre CVE Dictionary Links: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-5537 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-5538 Fixed Version(s) and Release Notes: VMware vCenter Server Appliance 6.7u3a https://my.vmware.com/web/vmware/details?productId=742&rPId=38207&downloadGroup =VC67U3a VMware vCenter Server Appliance 6.5u3d https://my.vmware.com/web/vmware/details?productId=614&rPId=38398&downloadGroup =ESXI65U3D Additional Documentation: https://kb.vmware.com/s/article/75156 5. Change log 2019-10-24: VMSA-2019-0018 Initial security advisory detailing remediations for CVE-2019-5537 and CVE-2019-5538 in VMware vCenter Server Appliance 6.7u3a and 6.5u3d. 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 2019 VMware Inc. All rights reserved. ========================================================= + CERT-RENATER | tel : 01-53-94-20-44 + + 23/25 Rue Daviel | fax : 01-53-94-20-41 + + 75013 Paris | email:cert@support.renater.fr + =========================================================