Buffer overflow in VMware Horizon Client
CVE-2020-3989
VMware Workstation (15.x) and Horizon Client for Windows (5.x before 5.4.4) contain a denial of service vulnerability due to an out-of-bounds write issue in Cortado ThinPrint component. A malicious actor with normal access to a virtual machine may be able to exploit this issue to create a partial denial-of-service condition 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 (21.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
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-2020-3989?
- CVE-2020-3989 is a low-severity vulnerability in VMware Horizon Client, classified under Out-of-bounds Write. CVSS score: 3.3/10. Published 2020-09-16.
- How severe is CVE-2020-3989?
- Low severity. CVSS v3 base score is 3.3 out of 10.