CVE-2020-3950
VMware — VMware Multiple Products Privilege Escalation Vulnerability
VMware · CWE-269 — Improper privilege management · in CISA KEV since 2021-11-03
EVRS 75 of 100 Urgent
Patch This Cycle
Rank 1,065 of 2,962 tracked
Raised to the floor for a confirmed exploited vulnerability.
Why it scores 75
Evidence available: 6 of 7 signalsListed in the CISA KEV catalog, and an EPSS probability of 0.073.
- CISA KEVApplied
- RansomwareDid not apply
- Vendor exploitationDid not apply
- EPSSApplied
- Microsoft Exploitability IndexNot applicable
- Pre-patch disclosureNo data
- KEV recencyDid not apply
- CVSSApplied
The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data
Fix
Patch or fixed version identifiedCISA required action
Fixed in
fusion: update to 11.5.2 or later | horizon client: update to 5.4.0 or later | remote console: update to 11.0.1 or later
Affected versions
- fusion
>= 11.0.0 < 11.5.2 - horizon client
>= 5.0.0 < 5.4.0 - remote console
>= 11.0.0 < 11.0.1 - macos
Remediation
Apply updates per vendor instructions.
Fixed versions from NVD.
Evidence
Each value with its source| Measure | Value | Source |
|---|---|---|
| CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. | 7.8 | NVD |
| FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. | 0.073 (94.3rd pctl) | FIRST EPSS |
| Actively exploitedWhether a source of record has confirmed attacks using it in the wild. | Confirmed | CISA KEV |
| Ransomware campaign useWhether CISA has seen ransomware operators use it. | Unknown or none | CISA KEV |
| CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. | 2022-05-03 · KEV since 2021 · listed over a year | CISA KEV |
| Public exploit moduleA module existing is not the same as active exploitation. | Public module exists | Metasploit |
| EUVD cross-referenceENISA's record: CVSS 7.8 (v3.1), assigned by vmware. | Listed | ENISA EUVD |
Description
NVDVMware 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.
What CISA says to do
Public module
Metasploit lists a public excellent-rank module for this CVE: VMware Fusion USB Arbitrator Setuid Privilege Escalation (osx/local/vmware_fusion_lpe). A module existing is not the same as active exploitation; see metasploit.com.