VMware released vCenter Server 5.5 Update 1b at June 12. This update addresses Open SSL vulnerability and fixes some other issues.
The release notes are here
Download the bits here.
Update to OpenSSL library addresses security issues
OpenSSL libraries have been updated to versions openssl-0.9.8za, openssl-1.0.0m, and openssl-1.0.1h to address CVE-2014-0224.
Host profile answer file might not be applied when you reboot the ESXi host
After you restart the vCenter services, if you use Auto Deploy to reboot a stateless ESXi host, the host profile answer file might not be applied to the ESXi host and the host configuration might fail. This issue occurs if the reference host is not available.
This issue is resolved in this release.
Under certain conditions, Virtual SAN storage providers might not be created automatically after you enable Virtual SAN on a cluster
When you enable Virtual SAN on a cluster, Virtual SAN might fail to automatically configure and register storage providers for the hosts in the cluster, even after you perform a resynchronization operation.
This issue is resolved in this release. You can view the Virtual SAN storage providers after resynchronization. To resynchronize, click the synchronize icon in the Storage Providers tab.