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VMware ESXi 5.5, Patch ESXi550-201609101-SG: Updates esx-base (2146720)

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Release date: September 15, 2016

Patch Category Security fix
Patch Severity Important
Build For build information, see KB 2146717.
Host Reboot Required No
Virtual Machine Migration or Shutdown Required Yes
Affected Hardware N/A
Affected Software N/A
VIBs Included VMware:esx-base:5.5.0:3.92.4345810
PRs Fixed 1615923, 1620822, 1629218, 1649488, 1669803
Related CVE numbers NA



Summaries and Symptoms
This patch updates the esx-base VIB to resolve the following issues:

  • The OpenSSL is updated to version openssl-1.0.1t.
  • ESXi Firewall allows UDP source port 53 traffic to all destination ports. This behavior with the ESXi firewall is expected as per ESXi's DNS client implementation. The ESXi DNS client uses 'high' ephemeral ports ( more than 49152) for DNS queries. But vulnerability scanners may still flag it as an issue. To better protect your ESXi, have an external firewall block for all incoming DNS traffic to ESXi from ports less than 49152.
  • OpenSSH is updated to version openssh-7.2.p2.
  • The ESXi NTP package is updated to version 4.2.8p8.
  • The ESXi userworld libxml2 library is updated to version 2.9.4.


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