Multiple vulnerabilities in VMware Workstation, Fusion and Horizon



Published: 2019-11-13 | Updated: 2019-12-20
Risk High
Patch available YES
Number of vulnerabilities 4
CVE-ID CVE-2019-5540
CVE-2019-5541
CVE-2019-5542
CVE-2019-5539
CWE-ID CWE-200
CWE-787
CWE-20
CWE-427
Exploitation vector Network
Public exploit N/A
Vulnerable software
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VMware Workstation
Client/Desktop applications / Virtualization software

VMware Fusion
Client/Desktop applications / Virtualization software

VMware Horizon
Server applications / Virtualization software

Vendor VMware, Inc

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

Updated 20.12.2019
Added vulnerability #4

1) Information disclosure

EUVDB-ID: #VU22738

Risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-5540

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to information disclosure issue in vmnetdhcp. A remote authenticated attacker can leak memory from the host process and gain unauthorized access to sensitive information on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

VMware Workstation: 15.0.0 - 15.5.0

VMware Fusion: 11.0.0 - 11.5.0

External links

http://www.vmware.com/security/advisories/VMSA-2019-0021.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to open a a specially crafted file.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Out-of-bounds write

EUVDB-ID: #VU22739

Risk: High

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-5541

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input via the e1000e virtual network adapter. A remote administrator can trigger out-of-bounds write and execute arbitrary code on the target system, or create a denial-of-service (DoS) condition on their own VM.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

VMware Workstation: 15.0.0 - 15.5.0

VMware Fusion: 11.0.0 - 11.5.0

External links

http://www.vmware.com/security/advisories/VMSA-2019-0021.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to open a a specially crafted file.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Input validation error

EUVDB-ID: #VU22740

Risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-5542

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input in the RPC handler. A remote authenticated attacker can cause a denial-of-service condition on their own VM.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

VMware Workstation: 15.0.0 - 15.5.0

VMware Fusion: 11.0.0 - 11.5.0

External links

http://www.vmware.com/security/advisories/VMSA-2019-0021.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to open a a specially crafted file.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Insecure DLL loading

EUVDB-ID: #VU23778

Risk: Low

CVSSv3.1: 5.5 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-5539

CWE-ID: CWE-427 - Uncontrolled Search Path Element

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the target system.

The vulnerability exists due to insecure loading of a DLL by Cortado Thinprint. A local user can escalate their privileges to administrator on a Windows machine where Workstation or View Agent is installed.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

VMware Workstation: 15.0.4 - 15.5.0

VMware Horizon: 7.5 - 7.10

External links

http://www.vmware.com/security/advisories/VMSA-2019-0023.html


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to open a a specially crafted file.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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