Out-of-bounds Read in VMware Horizon Client
CVE-2020-3990
VMware Workstation (15.x) and Horizon Client for Windows (5.x before 5.4.4) contain an information disclosure vulnerability due to an integer overflow issue in Cortado ThinPrint component. A malicious actor with normal access to a virtual machine may be able to exploit this issue to leak memory from TPView process running on the system where Workstation or Horizon Client for Windows is installed. Exploitation is only possible if virtual printing has been enabled. This feature is not enabled by default on Workstation but it is enabled by default on Horizon Client.
Vulnerability class: Buffer Overflow
EPSS: 0.003 (24.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.
Affected products
- Vmware Horizon_client
- Vmware Workstation_player
- Vmware Workstation_pro
- N/a Vmware Workstation And Horizon Client For Windows — versions VMware Workstation (15.x), Horizon Client for Windows (5.x before 5.4.4)
Weakness classification (CWE)
References
- security@vmware.com (x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-3990?
- CVE-2020-3990 is a medium-severity vulnerability in VMware Horizon Client, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2020-09-16.
- How severe is CVE-2020-3990?
- Medium severity. CVSS v3 base score is 6.5 out of 10.