VMSA-2019-0012:VMware ESXi, Workstation and Fusion updates address out-of-bounds read/write vulnerabilities

VMware Tanzu Application Service

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23557

31 July 2019

31 July 2019

CLOSED

HIGH

6.3-8.5

CVE-2019-5521,CVE-2019-5684

VMware Security Advisories

Advisory IDVMSA-2019-0012
Advisory SeverityImportant
CVSSv3 Range6.3-8.5
SynopsisVMware ESXi, Workstation and Fusion updates address out-of-bounds read/write vulnerabilities (CVE-2019-5521, CVE-2019-5684)
Issue Date2019-08-02
Updated On2019-08-02 (Initial Advisory)
CVE(s)CVE-2019-5521, CVE-2019-5684
1. Impacted Products
  • VMware vSphere ESXi (ESXi)
  • VMware Workstation Pro / Player (Workstation)
  • VMware Fusion Pro / Fusion (Fusion)
2. Introduction
VMware ESXi, Workstation and Fusion updates address the following pixel shader vulnerabilities:
  • CVE-2019-5521 - Out-of-bounds read vulnerability - CVSSv3 = 6.3-7.7
  • CVE-2019-5684 - Out-of-bounds write vulnerability - CVSSv3 = 8.5
3. VMware ESXi, Workstation and Fusion pixel shader out-of-bounds read/write vulnerabilities (CVE-2019-5521, CVE-2019-5684)

Description:

VMware ESXi, Workstation and Fusion contain out-of-bounds read/write vulnerabilities in the pixel shader functionality. VMware has evaluated the severity of these issues to be in the Important severity range with a maximum CVSSv3 base score of 8.5.

 

Known Attack Vectors:

Exploitation of these issues require an attacker to have access to a virtual machine with 3D graphics enabled. It is not enabled by default on ESXi and is enabled by default on Workstation and Fusion.

 

Successful exploitation of the out-of-bounds read issue (CVE-2019-5521) may lead to information disclosure or may allow attackers with normal user privileges to create a denial-of-service condition on the host.

 

The out-of-bounds write issue (CVE-2019-5684) can be exploited only if the host has an affected NVIDIA graphics driver. Successful exploitation of this issue may lead to code execution on the host. Customers should check NVIDIA security advisory for additional information. 

 

Resolution:

  • To remediate these vulnerabilities, apply the patches listed in the 'Fixed Version' column of the 'Resolution Matrix' found below.
  • Alternatively, CVE-2019-5684 can be remediated by installing the updated NVIDIA graphics driver.

 

Workarounds:

The workaround for these issues involves disabling the 3D-acceleration feature. Please see the 'Workarounds'  column of the 'Resolution Matrix' found below.

 

Additional Documentations:

None.

 

Acknowledgements:

VMware would like to thank Piotr Bania of Cisco Talos for reporting these issues to us.

 

Response Matrix:

ProductVersionRunning OnCVE Identifier*CVSSV3SeverityFixed VersionWorkaroundsAdditional Documents
ESXi
6.7
Any
CVE-2019-5521/
CVE-2019-5684
6.3/
8.5
Important
ESXi670-201904101-SG
see VMSA-2018-0025
None
ESXi6.5AnyCVE-2019-5521/
CVE-2019-5684
6.3/
8.5
ImportantESXi650-201903001see VMSA-2018-0025None
ESXi6.0AnyCVE-2019-5521/
CVE-2019-5684
N/AN/ANot affectedN/AN/A
Workstation15.xAnyCVE-2019-5521/
CVE-2019-5684
7.7/
8.5
Important15.0.3see VMSA-2018-0025None
Workstation14.xAnyCVE-2019-5521/
CVE-2019-5684
7.7/
8.5
Important14.1.6see VMSA-2018-0025None
Fusion11.xOSXCVE-2019-5521/
CVE-2019-5684
7.7/
8.5
Important11.0.3see VMSA-2018-0025None
Fusion10.xOSXCVE-2019-5521/
CVE-2019-5684
7.7/
8.5
Important10.1.6see VMSA-2018-0025None

* CVE-2019-5684 is relevant if an affected NVIDIA graphics driver is present.

5. Change log
 

2019-08-02: VMSA-2019-0012 - Initial security advisory.

 

6. Contact

 

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https://lists.vmware.com/cgi-bin/mailman/listinfo/security-announce

 

This Security Advisory is posted to the following lists:

  [email protected]

  [email protected]

  [email protected]

 

E-mail: [email protected]

PGP key at:

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

 

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