Actively exploited · Published Mar 17, 2020 · Assigned by vmware
CVE-2020-3950
High 7.8 Exploited
In plain English
A high-severity privilege mismanagement in VMware Fusion, VMware Remote Console for Mac and Horizon Client for Mac. Attackers are actively exploiting it in the wild (listed by CISA on November 3, 2021). The chance it is exploited in the next 30 days is estimated at 7.3% (higher than 94% of all known vulnerabilities). Ready-made attack tooling exists: Metasploit. Apply updates per vendor instructions.
CISA guidance
Apply updates per vendor instructions.
Federal agencies must remediate by May 3, 2022.
Official description
VMware Fusion (11.x before 11.5.2), VMware Remote Console for Mac (11.x and prior before 11.0.1) and Horizon Client for Mac (5.x and prior before 5.4.0) contain a privilege escalation vulnerability due to improper use of setuid binaries. Successful exploitation of this issue may allow attackers with normal user privileges to escalate their privileges to root on the system where Fusion, VMRC or Horizon Client is installed.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | VMware Fusion, VMware Remote Console for Mac and Horizon Client for Mac | VMware Fusion (11.x before 11.5.2), VMware Remote Console for Mac (11.x and prior before 11.0.1) and Horizon Client for Mac (5.x and prior before 5.4.0) |
Weakness: CWE-269 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- https://www.vmware.com/security/advisories/VMSA-2020-0005.html x_refsource_MISC
- http://packetstormsecurity.com/files/156843/VMware-Fusion-11.5.2-Privilege-Escalation.html x_refsource_MISC
- http://packetstormsecurity.com/files/157079/VMware-Fusion-USB-Arbitrator-Setuid-Privilege-Escalation.html x_refsource_MISC
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3950 government-resource