VMware vCenter Server

A sensitive information disclosure vulnerability in the VMware Directory Service (vmdir) was privately reported to VMware. vCenter updates are available to address this vulnerability.

Under certain conditions[1] vmdir that ships with VMware vCenter Server, as part of an embedded or external Platform Services Controller (PSC), does not correctly implement access controls. VMware has evaluated the severity of this issue to be in the Critical severity range with a maximum CVSSv3 base score of 10.0.

A malicious actor with network access to port 389 on an affected vmdir deployment1 may be able to extract highly sensitive information such as administrative account credentials which could be used to compromise vCenter Server or other services which are dependent upon vmdir for authentication. Variant attack vectors such as creating new attacker-controlled administrative accounts are also possible.

To remediate CVE-2020-3952 apply the updates listed in the 'Fixed Version' column of the 'Response Matrix' below to affected deployments.

None.

VMware has created KB78543 which details steps to determine whether or not a particular deployment is affected by CVE-2020-3952.

[1]vCenter Server 6.7 (embedded or external PSC) prior to 6.7u3f is affected by CVE-2020-3952 if it was upgraded from a previous release line such as 6.0 or 6.5. Clean installations of vCenter Server 6.7 (embedded or external PSC) are not affected.

VMware would like to thank Hynek Petrak of Schneider Electric for reporting this issue to us.

vCenter Server 6.7u3f:
https://my.vmware.com/web/vmware/details?productId=742&rPId=44888&downloadGroup=VC67U3F 

Additional Documentation:
https://kb.vmware.com/s/article/78543

Mitre CVE Dictionary Links:
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-3952

FIRST CVSSv3 Calculator:
https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

2020-04-09 VMSA-2020-0006
Initial security advisory.
 

2020-04-16 VMSA-2020-0006.1
Updated 'Known Attack Vectors' section with additional details.

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https://kb.vmware.com/kb/1055

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