CVE-2017-4919 - Missing Authentication for Critical Function

Severity

68%

Complexity

86%

Confidentiality

106%

VMware vCenter Server 5.5, 6.0, 6.5 allows vSphere users with certain, limited vSphere privileges to use the VIX API to access Guest Operating Systems without the need to authenticate.

VMware vCenter Server 5.5, 6.0, 6.5 allows vSphere users with certain, limited vSphere privileges to use the VIX API to access Guest Operating Systems without the need to authenticate.

CVSS 3.0 Base Score 9. CVSS Attack Vector: network. CVSS Attack Complexity: high. CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H).

CVSS 2.0 Base Score 6.8. CVSS Attack Vector: network. CVSS Attack Complexity: medium. CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:P/A:P).

Demo Examples

Missing Authentication for Critical Function

CWE-306

In the following Java example the method createBankAccount is used to create a BankAccount object for a bank management application.


               
}
return account;

However, there is no authentication mechanism to ensure that the user creating this bank account object has the authority to create new bank accounts. Some authentication mechanisms should be used to verify that the user has the authority to create bank account objects.

The following Java code includes a boolean variable and method for authenticating a user. If the user has not been authenticated then the createBankAccount will not create the bank account object.


               
}// authenticate user,// if user is authenticated then set variable to true// otherwise set variable to false
...
return account;
account.setBalance(balance);

Overview

Type

VMware vCenter Server

First reported 7 years ago

2017-07-28 22:29:00

Last updated 5 years ago

2019-10-03 00:03:00

Affected Software

VMware vCenter Server 5.5

5.5

VMware vCenter Server 6.0

6.0

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