Multiple vulnerabilities in VMware Horizon, Workstation, Fusion and VMRC



Published: 2020-03-13 | Updated: 2020-04-05
Risk Low
Patch available YES
Number of vulnerabilities 4
CVE ID CVE-2019-5543
CVE-2020-3947
CVE-2020-3948
CWE ID CWE-264
CWE-416
CWE-200
Exploitation vector Network
Public exploit N/A
Vulnerable software
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VMware Horizon Client
Client/Desktop applications / Software for system administration

VMRC
Client/Desktop applications / Software for system administration

VMware Workstation
Client/Desktop applications / Virtualization software

VMware Fusion
Client/Desktop applications / Virtualization software

Vendor VMware, Inc

Security Advisory

Updated: 05.04.2020

Added vulnerability #4.

1) Permissions, Privileges, and Access Controls

Risk: Low

CVSSv3: 6.4 [CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2019-5543

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

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

The vulnerability exists due to the folder containing configuration files for the VMware USB arbitration service is writable by all users. A local user can run arbitrary commands with elevated privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

VMware Horizon Client: 5.0, 5.1, 5.2

VMRC: 10.0.0, 10.0.1, 10.0.2, 10.0.3, 10.0.4, 10.0.5, 10.0.6

VMware Workstation: 15.0.0, 15.0.1, 15.0.2, 15.0.3, 15.0.4, 15.1.0, 15.5.0, 15.5.1

CPE External links

http://www.vmware.com/security/advisories/VMSA-2020-0004.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.

Is there known malware, which exploits this vulnerability?

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

2) Use-after-free

Risk: Low

CVSSv3: 8.1 [CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-3947

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in vmnetdhcp. A local attacker can execute arbitrary code on the host from the guest or cause a denial-of-service condition of the vmnetdhcp service running on the host machine.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

VMware Workstation: 15.0.0, 15.0.1, 15.0.2, 15.0.3, 15.0.4, 15.1.0, 15.5.0, 15.5.1

VMware Fusion: 11.0.0, 11.0.1, 11.0.2, 11.0.3, 11.1.0, 11.1.1, 11.5.0, 11.5.1

CPE External links

http://www.vmware.com/security/advisories/VMSA-2020-0004.html
https://www.zerodayinitiative.com/advisories/ZDI-20-298/

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.

3) Permissions, Privileges, and Access Controls

Risk: Low

CVSSv3: 6.8 [CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-3948

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

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

The vulnerability exists due to improper file permissions in Cortado Thinprint. A local user with access to a Linux guest VM with VMware Tools installed can gain root privileges on the same guest VM.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

VMware Workstation: 15.0.0, 15.0.1, 15.0.2, 15.0.3, 15.0.4, 15.1.0, 15.5.0, 15.5.1

VMware Fusion: 11.0.0, 11.0.1, 11.0.2, 11.0.3, 11.1.0, 11.1.1, 11.5.0, 11.5.1

CPE External links

http://www.vmware.com/security/advisories/VMSA-2020-0004.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.

4) Information disclosure

Risk: Medium

CVSSv3: 5.7 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID: N/A

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 the way VMware Workstation processes OVA and OVF files. A remote attacker can trick the victim to import a specially crafted OVA or OVF file and obtain an NTLM challenge response from the current user.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

VMware Workstation: 15.5.0, 15.5.1

CPE External links

https://www.zerodayinitiative.com/advisories/ZDI-20-369/
https://docs.vmware.com/en/VMware-Workstation-Pro/15.5/rn/VMware-Workstation-1552-Pro-Release-Notes.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker 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.