VMware vCenter Server (6.7 before 6.7u3, 6.6 before 6.5u3k) contains a session hijack vulnerability in the vCenter Server Appliance Management Interface update function due to a lack of certificate validation. A malicious actor with network positioning between vCenter Server and an update repository may be able to perform a session hijack when the vCenter Server Appliance Management Interface is used to download vCenter updates.

References

• https://nvd.nist.gov/vuln/detail/CVE-2020-3994
• https://www.vmware.com/security/advisories/VMSA-2020-0023.html