VMware vCenter Server Appliance BlazeDS AMF3 RCE (VMSA-2017-0007)

critical Nessus Plugin ID 99474

Synopsis

A virtualization appliance installed on the remote host is affected by a remote code execution vulnerability.

Description

The version of VMware vCenter Server Appliance installed on the remote host is 6.0 prior to Update 3b or 6.5 prior to Update c. It is, therefore, affected by a flaw in FlexBlazeDS when processing AMF3 messages due to allowing the instantiation of arbitrary classes when deserializing objects. An unauthenticated, remote attacker can exploit this, by sending a specially crafted Java object, to execute arbitrary code.

Solution

Upgrade to VMware vCenter Server Appliance 6.0 Update 3b / 6.5 Update c or later. Alternatively, apply the vendor-supplied workaround.

See Also

https://www.vmware.com/security/advisories/VMSA-2017-0007.html

http://www.nessus.org/u?1bb48b81

http://www.nessus.org/u?f0a01429

https://codewhitesec.blogspot.com/2017/04/amf.html

Plugin Details

Severity: Critical

ID: 99474

File Name: vmware_vcenter_server_appliance_vmsa-2017-0007.nasl

Version: 1.6

Type: local

Family: Misc.

Published: 4/19/2017

Updated: 11/13/2019

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2017-5641

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:vmware:vcenter_server_appliance

Required KB Items: Host/VMware vCenter Server Appliance/Version, Host/VMware vCenter Server Appliance/Build

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/13/2017

Vulnerability Publication Date: 4/4/2017

Reference Information

CVE: CVE-2017-5641

BID: 97383

CERT: 307983

VMSA: 2017-0007