Multiple vulnerabilities in VMware products



Published: 2020-03-17 | Updated: 2020-03-18
Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2020-3950
CVE-2020-3951
CWE-ID CWE-264
CWE-122
Exploitation vector Local
Public exploit Vulnerability #1 is being exploited in the wild.
Vulnerable software
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VMware Fusion
Client/Desktop applications / Virtualization software

VMware Workstation
Client/Desktop applications / Virtualization software

VMRC
Client/Desktop applications / Software for system administration

VMware Horizon Client
Client/Desktop applications / Software for system administration

Vendor VMware, Inc

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

Updated: 18.03.2020

Added exploit to vulnerability #1.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU26147

Risk: Low

CVSSv3.1: 7.5 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2020-3950

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

Exploit availability: Yes

Description

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

The vulnerability exists due to improper use of setuid binaries. A local user can execute arbitrary code on the system with elevated privileges.

Note: the vulnerability affects VMware Fusion, VMware Remote Console for Mac and Horizon Client for Mac.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

VMware Fusion: 11.0.0 - 11.5.1

VMRC: 8.0.0 - 11.0.0

VMware Horizon Client: 3.0.0 - 5.3


CPE2.3 External links

http://www.vmware.com/security/advisories/VMSA-2020-0005.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?

Yes. This vulnerability is being exploited in the wild.

2) Heap overflow

EUVDB-ID: #VU26148

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-3951

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error within Cortado Thinprint. A local user can trigger heap overflow and crash the Thinprint service running on the system where Workstation or Horizon Client is installed.


Mitigation

Install updates from vendor's website.

Vulnerable software versions

VMware Workstation: 15.5.0 - 15.5.1

VMware Horizon Client: 3.0.0 - 5.3


CPE2.3 External links

http://www.vmware.com/security/advisories/VMSA-2020-0005.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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